Molecular Formula A molecular formula shows the elements
![Molecular Formula A molecular formula shows the elements that a compound is made out Molecular Formula A molecular formula shows the elements that a compound is made out](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-1.jpg)
![Relative molecular mass Molecules are incredibly light so when discussing how heavy a molecule Relative molecular mass Molecules are incredibly light so when discussing how heavy a molecule](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-2.jpg)
![Elemental Analysis Is a technique that allows a chemist to workout (as a percentage) Elemental Analysis Is a technique that allows a chemist to workout (as a percentage)](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-3.jpg)
![Use your skills with fractions, percentages, ratios and substitution to work out missing information Use your skills with fractions, percentages, ratios and substitution to work out missing information](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-4.jpg)
![Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12 Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-5.jpg)
![There a few different ways of using this resource: 1. Fill in the gaps There a few different ways of using this resource: 1. Fill in the gaps](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-6.jpg)
![• Fill in gaps (given formula) • Fill in gaps (given formula)](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-7.jpg)
![Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12 Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-8.jpg)
![Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-9.jpg)
![• answers • answers](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-10.jpg)
![Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12 Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-11.jpg)
![Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6 Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-12.jpg)
![• Fill in gaps (harder) • Fill in gaps (harder)](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-13.jpg)
![Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-14.jpg)
![Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-15.jpg)
![• answers • answers](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-16.jpg)
![Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12 Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-17.jpg)
![Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6 Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-18.jpg)
![• Card sort • Card sort](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-19.jpg)
![Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12 Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-20.jpg)
![Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6 Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-21.jpg)
![• Card sort with template (given formula) • Card sort with template (given formula)](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-22.jpg)
![Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12 Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-23.jpg)
![Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6 Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-24.jpg)
![Relative molecular mass (amu) % by mass Ratio of masses Simplified Ratio Empirical formula Relative molecular mass (amu) % by mass Ratio of masses Simplified Ratio Empirical formula](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-25.jpg)
![(insert picture of your own choice) (insert picture of your own choice)](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-26.jpg)
![Relative molecular mass (amu) 60 16 62 % by mass C: 40% H: 13. Relative molecular mass (amu) 60 16 62 % by mass C: 40% H: 13.](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-27.jpg)
![(insert picture of your own choice) (insert picture of your own choice)](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-28.jpg)
![• Card sort with template (harder) • Card sort with template (harder)](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-29.jpg)
![Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-30.jpg)
![Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-31.jpg)
![Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12 Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-32.jpg)
![Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6 Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-33.jpg)
![Relative molecular mass (amu) % by mass Ratio of masses Simplified Ratio Empirical formula Relative molecular mass (amu) % by mass Ratio of masses Simplified Ratio Empirical formula](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-34.jpg)
![(insert picture of your own choice) (insert picture of your own choice)](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-35.jpg)
![Relative molecular mass (amu) 60 16 62 % by mass C: 40% H: 13. Relative molecular mass (amu) 60 16 62 % by mass C: 40% H: 13.](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-36.jpg)
![(insert picture of your own choice) (insert picture of your own choice)](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-37.jpg)
![](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-38.jpg)
![Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12 Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-39.jpg)
![Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6 Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-40.jpg)
![Alternative ratio activity Alternative ratio activity](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-41.jpg)
![Match the following molecules that contain the same ratio of elements. CH 2 O Match the following molecules that contain the same ratio of elements. CH 2 O](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-42.jpg)
![Extension • The mass of each of the compound is shown on the next Extension • The mass of each of the compound is shown on the next](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-43.jpg)
![C 2 H 2 26 CH 2 O 30 H 2 O 18 C C 2 H 2 26 CH 2 O 30 H 2 O 18 C](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-44.jpg)
- Slides: 44
![Molecular Formula A molecular formula shows the elements that a compound is made out Molecular Formula A molecular formula shows the elements that a compound is made out](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-1.jpg)
Molecular Formula A molecular formula shows the elements that a compound is made out of and the number of atoms of each element present in one molecule of the compound. The numbers are shown written as subscripts. e. g. The molecular formula of butane is C 4 H 10 One molecule of ethane contains 4 carbon atoms and 10 hydrogen atoms. The molecular formula of water is H 2 O One molecule of water contains 2 hydrogen atoms and one oxygen atom. Empirical Formula The empirical formula gives the simplest whole number ratio of each type of atom in a compound e. g. The molecular formula of butane is C 4 H 10 The empirical formula of butane is C 2 H 5
![Relative molecular mass Molecules are incredibly light so when discussing how heavy a molecule Relative molecular mass Molecules are incredibly light so when discussing how heavy a molecule](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-2.jpg)
Relative molecular mass Molecules are incredibly light so when discussing how heavy a molecule is Chemists often find the relative molecular mass. This is measured in atomic mass units. The table below shows the relative atomic masses of various elements which can be used to calculate the relative molecular mass of molecules. e. g. The molecular formula of butane is C 4 H 10 The relative molecular mass of ethane is 4 x 12 + 10 x 1 = 58 atomic mass units Element Hydrogen Carbon Oxygen Nitrogen Calcium Silicon Symbol H C O N Ca Si Relative Atomic Mass 1 12 16 14 40 28
![Elemental Analysis Is a technique that allows a chemist to workout as a percentage Elemental Analysis Is a technique that allows a chemist to workout (as a percentage)](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-3.jpg)
Elemental Analysis Is a technique that allows a chemist to workout (as a percentage) how much each element contributes to the total mass of the molecule. If you know these percentages you can work out what the empirical formula of a molecule so it can help Chemists work out what they have made. Ratio Percentages Fractions Substitution
![Use your skills with fractions percentages ratios and substitution to work out missing information Use your skills with fractions, percentages, ratios and substitution to work out missing information](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-4.jpg)
Use your skills with fractions, percentages, ratios and substitution to work out missing information about molecules and even identify mystery compounds. Use the table below to help you. Element Hydrogen Carbon Oxygen Nitrogen Calcium Silicon Symbol H C O N Ca Si Relative Atomic Mass 1 12 16 14 40 28
![Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12 Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-5.jpg)
Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12 O 6 C 6 H 6 Ca. CO 3 Si. H 4 Ratio 3: 6 Empirical formula CH 2 Simplified Ratio 1: 2 Ratio of masses 12: 2 Fraction of total mass for each element % by mass C: 85. 7% H: 14. 3% Relative molecular mass (amu) 42
![There a few different ways of using this resource 1 Fill in the gaps There a few different ways of using this resource: 1. Fill in the gaps](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-6.jpg)
There a few different ways of using this resource: 1. Fill in the gaps in the table (possibly in pairs- each use a different colour) 2. Cut up the completed grid and use it as a card sort (possibly only use one slide rather than two) 3. Print the reversed complete grid with a picture on the back of the page before you cut it out into cards. Put the cards in the correct places on the template grid. Flip over each card to reveal the picture (and hence check the cards are in the correct place.
![Fill in gaps given formula • Fill in gaps (given formula)](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-7.jpg)
• Fill in gaps (given formula)
![Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12 Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-8.jpg)
Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12 O 6 C 6 H 6 Ca. CO 3 Si. H 4 Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for each element % by mass Relative molecular mass (amu)
![Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-9.jpg)
Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for each element % by mass Relative molecular mass (amu) CH 4 N 60 CH 4 16 CH 3 O 62 CH 3 30 C 5 H 4 128 CHO 2 90
![answers • answers](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-10.jpg)
• answers
![Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12 Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-11.jpg)
Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12 O 6 C 6 H 6 Ca. CO 3 Si. H 4 Ratio 3: 6 12: 18 6: 12: 6 6: 6 1: 1: 3 1: 4 Empirical formula CH 2 C 2 H 3 CH 2 O CH Ca. CO 3 Si. H 4 Simplified Ratio 1: 2 2: 3 1: 2: 1 1: 1: 3 1: 4 Ratio of masses Fraction of total mass for each element % by mass Relative molecular mass (amu) 12: 2 C: 85. 7% H: 14. 3% 42 24: 3 C: 88. 9% H: 11. 1% 162 12: 2: 16 12: 1 40: 12: 48 28: 4 C: 40% H 6. 7% O: 53. 3% C: 92. 3% H: 7. 7% Ca: 40% C: 12% O: 48% Si: 87. 5% H: 12. 5% 180 78 100 32
![Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6 Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-12.jpg)
Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6 O 2 C 2 H 6 C 10 H 8 C 2 H 2 O 4 Ratio 2: 6: 2 1: 4 2: 6: 2 2: 6 10: 8 2: 2: 4 Empirical formula CH 4 N CH 4 CH 3 O CH 3 C 5 H 4 CHO 2 Simplified Ratio 1: 4: 1 1: 4 1: 3: 1 1: 3 5: 4 1: 1: 2 Ratio of masses 12: 4: 14 12: 3: 16 Fraction of total mass for each element % by mass C: 40% H: 13. 3% N: 46. 7% C: 75% H: 25% C: 38. 7% H: 9. 7% O: 51. 6% Relative molecular mass (amu) 60 16 62 12: 3 C: 80% H: 20% 30 60: 4 C: 93. 75% H: 6. 25% 128 12: 1: 32 C: 26. 7% H: 2. 2% O: 71. 1% 90
![Fill in gaps harder • Fill in gaps (harder)](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-13.jpg)
• Fill in gaps (harder)
![Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-14.jpg)
Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for each element % by mass Relative molecular mass (amu) C 3 H 6 C 12 H 18 CH 2 O 180 C: H 78 Ca: 40% C: 12% O: 48% Si. H 4 100 32
![Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-15.jpg)
Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for each element % by mass Relative molecular mass (amu) C: H: N 60 C: 75% H: 25% C: H: O 12: 3: 16 16 62 C: 80% H: 20% 30 C: 93. 75% H: 6. 25% 128 C: 26. 7% H: 2. 2% O: 71. 1% 90
![answers • answers](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-16.jpg)
• answers
![Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12 Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-17.jpg)
Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12 O 6 C 6 H 6 Ca. CO 3 Si. H 4 Ratio 3: 6 12: 18 6: 12: 6 6: 6 1: 1: 3 1: 4 Empirical formula CH 2 C 2 H 3 CH 2 O CH Ca. CO 3 Si. H 4 Simplified Ratio 1: 2 2: 3 1: 2: 1 1: 1: 3 1: 4 Ratio of masses 12: 2 6: 1 24: 3 8: 1 Fraction of total mass for each element % by mass C: 85. 7% H: 14. 3% 42 C: 88. 9% H: 11. 1% 162 12: 2: 16 6: 1: 8 C: 40% H 6. 7% O: 53. 3% 12: 1 C: 92. 3% H: 7. 7% 40: 12: 48 10: 3: 12 Ca: 40% C: 12% O: 48% 28: 4 7: 1 Relative molecular mass (amu) Si: 87. 5% H: 12. 5% 180 78 100 32
![Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6 Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-18.jpg)
Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6 O 2 C 2 H 6 C 10 H 8 C 2 H 2 O 4 Ratio 2: 6: 2 1: 4 2: 6: 2 2: 6 10: 8 2: 2: 4 Empirical formula CH 4 N CH 4 CH 3 O CH 3 C 5 H 4 CHO 2 Simplified Ratio 1: 4: 1 1: 4 1: 3: 1 1: 3 5: 4 1: 1: 2 Ratio of masses 12: 4: 14 6: 2: 7 12: 4 3: 1 12: 3: 16 12: 3 4: 1 60: 4 15: 1 12: 1: 32 Fraction of total mass for each element % by mass C: 40% H: 13. 3% N: 46. 7% C: 75% H: 25% C: 38. 7% H: 9. 7% O: 51. 6% Relative molecular mass (amu) 60 16 62 C: 80% H: 20% 30 C: 93. 75% H: 6. 25% 128 C: 26. 7% H: 2. 2% O: 71. 1% 90
![Card sort • Card sort](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-19.jpg)
• Card sort
![Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12 Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-20.jpg)
Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12 O 6 C 6 H 6 Ca. CO 3 Si. H 4 Ratio 3: 6 12: 18 6: 12: 6 6: 6 1: 1: 3 1: 4 Empirical formula CH 2 C 2 H 3 CH 2 O CH Ca. CO 3 Si. H 4 Simplified Ratio 1: 2 2: 3 1: 2: 1 1: 1: 3 1: 4 Ratio of masses 12: 2 6: 1 24: 3 8: 1 Fraction of total mass for each element % by mass C: 85. 7% H: 14. 3% 42 C: 88. 9% H: 11. 1% 162 12: 2: 16 6: 1: 8 C: 40% H 6. 7% O: 53. 3% 12: 1 C: 92. 3% H: 7. 7% 40: 12: 48 10: 3: 12 Ca: 40% C: 12% O: 48% 28: 4 7: 1 Relative molecular mass (amu) Si: 87. 5% H: 12. 5% 180 78 100 32
![Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6 Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-21.jpg)
Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6 O 2 C 2 H 6 C 10 H 8 C 2 H 2 O 4 Ratio 2: 6: 2 1: 4 2: 6: 2 2: 6 10: 8 2: 2: 4 Empirical formula CH 4 N CH 4 CH 3 O CH 3 C 5 H 4 CHO 2 Simplified Ratio 1: 4: 1 1: 4 1: 3: 1 1: 3 5: 4 1: 1: 2 Ratio of masses 12: 4: 14 6: 2: 7 12: 4 3: 1 12: 3: 16 12: 3 4: 1 60: 4 15: 1 12: 1: 32 Fraction of total mass for each element % by mass C: 40% H: 13. 3% N: 46. 7% C: 75% H: 25% C: 38. 7% H: 9. 7% O: 51. 6% Relative molecular mass (amu) 60 16 62 C: 80% H: 20% 30 C: 93. 75% H: 6. 25% 128 C: 26. 7% H: 2. 2% O: 71. 1% 90
![Card sort with template given formula • Card sort with template (given formula)](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-22.jpg)
• Card sort with template (given formula)
![Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12 Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-23.jpg)
Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12 O 6 C 6 H 6 Ca. CO 3 Si. H 4 Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for each element % by mass Relative molecular mass (amu)
![Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6 Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-24.jpg)
Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6 O 2 C 2 H 6 C 10 H 8 C 2 H 2 O 4 Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for each element % by mass Relative molecular mass (amu)
![Relative molecular mass amu by mass Ratio of masses Simplified Ratio Empirical formula Relative molecular mass (amu) % by mass Ratio of masses Simplified Ratio Empirical formula](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-25.jpg)
Relative molecular mass (amu) % by mass Ratio of masses Simplified Ratio Empirical formula Ratio Molecular Formula 12: 2 6: 1 1: 2 CH 2 3: 6 C 3 H 6 24: 3 8: 1 2: 3 C 2 H 3 12: 18 C 12 H 18 C: 40% H 6. 7% O: 53. 3% 12: 2: 16 6: 1: 8 1: 2: 1 CH 2 O 6: 12: 6 C 6 H 12 O 6 C: 92. 3% H: 7. 7% 12: 1 1: 1 CH 6: 6 C 6 H 6 Ca: 40% C: 12% O: 48% 40: 12: 48 10: 3: 12 1: 1: 3 Ca. CO 3 28: 4 7: 1 1: 4 Si. H 4 42 C: 85. 7% H: 14. 3% 162 C: 88. 9% H: 11. 1% 180 78 100 32 Si: 87. 5% H: 12. 5% Fraction of total mass for each element
![insert picture of your own choice (insert picture of your own choice)](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-26.jpg)
(insert picture of your own choice)
![Relative molecular mass amu 60 16 62 by mass C 40 H 13 Relative molecular mass (amu) 60 16 62 % by mass C: 40% H: 13.](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-27.jpg)
Relative molecular mass (amu) 60 16 62 % by mass C: 40% H: 13. 3% N: 46. 7% C: 75% H: 25% C: 38. 7% H: 9. 7% O: 51. 6% 30 C: 80% H: 20% 128 C: 93. 75% H: 6. 25% 90 C: 26. 7% H: 2. 2% O: 71. 1% Fraction of total mass for each element Ratio of masses Simplified Ratio Empirical formula Ratio Molecular Formula 12: 4: 14 6: 2: 7 1: 4: 1 CH 4 N 2: 6: 2 C 2 H 8 N 2 12: 4 3: 1 1: 4 CH 4 12: 3: 16 1: 3: 1 CH 3 O 2: 6: 2 C 2 H 6 O 2 12: 3 4: 1 1: 3 CH 3 2: 6 C 2 H 6 60: 4 15: 1 5: 4 C 5 H 4 10: 8 C 10 H 8 12: 1: 32 1: 1: 2 CHO 2 2: 2: 4 C 2 H 2 O 4
![insert picture of your own choice (insert picture of your own choice)](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-28.jpg)
(insert picture of your own choice)
![Card sort with template harder • Card sort with template (harder)](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-29.jpg)
• Card sort with template (harder)
![Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-30.jpg)
Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for each element % by mass Relative molecular mass (amu) C 3 H 6 C 12 H 18 CH 2 O 180 C: H 78 Ca: 40% C: 12% O: 48% Si. H 4 100 32
![Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-31.jpg)
Molecular Formula Ratio Empirical formula Simplified Ratio of masses Fraction of total mass for each element % by mass Relative molecular mass (amu) C: H: N 60 C: 75% H: 25% C: H: O 12: 3: 16 16 62 C: 80% H: 20% 30 C: 93. 75% H: 6. 25% 128 C: 26. 7% H: 2. 2% O: 71. 1% 90
![Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12 Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-32.jpg)
Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12 O 6 C 6 H 6 Ca. CO 3 Si. H 4 Ratio 3: 6 12: 18 6: 12: 6 6: 6 1: 1: 3 1: 4 Empirical formula CH 2 C 2 H 3 CH 2 O CH Ca. CO 3 Si. H 4 Simplified Ratio 1: 2 2: 3 1: 2: 1 1: 1: 3 1: 4 Ratio of masses 12: 2 6: 1 24: 3 8: 1 Fraction of total mass for each element % by mass C: 85. 7% H: 14. 3% 42 C: 88. 9% H: 11. 1% 162 12: 2: 16 6: 1: 8 C: 40% H 6. 7% O: 53. 3% 12: 1 C: 92. 3% H: 7. 7% 40: 12: 48 10: 3: 12 Ca: 40% C: 12% O: 48% 28: 4 7: 1 Relative molecular mass (amu) Si: 87. 5% H: 12. 5% 180 78 100 32
![Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6 Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-33.jpg)
Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6 O 2 C 2 H 6 C 10 H 8 C 2 H 2 O 4 Ratio 2: 6: 2 1: 4 2: 6: 2 2: 6 10: 8 2: 2: 4 Empirical formula CH 4 N CH 4 CH 3 O CH 3 C 5 H 4 CHO 2 Simplified Ratio 1: 4: 1 1: 4 1: 3: 1 1: 3 5: 4 1: 1: 2 Ratio of masses 12: 4: 14 6: 2: 7 12: 4 3: 1 12: 3: 16 12: 3 4: 1 60: 4 15: 1 12: 1: 32 Fraction of total mass for each element % by mass C: 40% H: 13. 3% N: 46. 7% C: 75% H: 25% C: 38. 7% H: 9. 7% O: 51. 6% Relative molecular mass (amu) 60 16 62 C: 80% H: 20% 30 C: 93. 75% H: 6. 25% 128 C: 26. 7% H: 2. 2% O: 71. 1% 90
![Relative molecular mass amu by mass Ratio of masses Simplified Ratio Empirical formula Relative molecular mass (amu) % by mass Ratio of masses Simplified Ratio Empirical formula](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-34.jpg)
Relative molecular mass (amu) % by mass Ratio of masses Simplified Ratio Empirical formula Ratio Molecular Formula 12: 2 6: 1 1: 2 CH 2 3: 6 C 3 H 6 24: 3 8: 1 2: 3 C 2 H 3 12: 18 C 12 H 18 C: 40% H 6. 7% O: 53. 3% 12: 2: 16 6: 1: 8 1: 2: 1 CH 2 O 6: 12: 6 C 6 H 12 O 6 C: 92. 3% H: 7. 7% 12: 1 1: 1 CH 6: 6 C 6 H 6 Ca: 40% C: 12% O: 48% 40: 12: 48 10: 3: 12 1: 1: 3 Ca. CO 3 28: 4 7: 1 1: 4 Si. H 4 42 C: 85. 7% H: 14. 3% 162 C: 88. 9% H: 11. 1% 180 78 100 32 Si: 87. 5% H: 12. 5% Fraction of total mass for each element
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![Relative molecular mass amu 60 16 62 by mass C 40 H 13 Relative molecular mass (amu) 60 16 62 % by mass C: 40% H: 13.](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-36.jpg)
Relative molecular mass (amu) 60 16 62 % by mass C: 40% H: 13. 3% N: 46. 7% C: 75% H: 25% C: 38. 7% H: 9. 7% O: 51. 6% 30 C: 80% H: 20% 128 C: 93. 75% H: 6. 25% 90 C: 26. 7% H: 2. 2% O: 71. 1% Fraction of total mass for each element Ratio of masses Simplified Ratio Empirical formula Ratio Molecular Formula 12: 4: 14 6: 2: 7 1: 4: 1 CH 4 N 2: 6: 2 C 2 H 8 N 2 12: 4 3: 1 1: 4 CH 4 12: 3: 16 1: 3: 1 CH 3 O 2: 6: 2 C 2 H 6 O 2 12: 3 4: 1 1: 3 CH 3 2: 6 C 2 H 6 60: 4 15: 1 5: 4 C 5 H 4 10: 8 C 10 H 8 12: 1: 32 1: 1: 2 CHO 2 2: 2: 4 C 2 H 2 O 4
![insert picture of your own choice (insert picture of your own choice)](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-37.jpg)
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![](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-38.jpg)
![Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12 Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-39.jpg)
Molecular Formula C 3 H 6 C 12 H 18 C 6 H 12 O 6 C 6 H 6 Ca. CO 3 Si. H 4 Ratio 3: 6 12: 18 6: 12: 6 6: 6 1: 1: 3 1: 4 Empirical formula CH 2 C 2 H 3 CH 2 O CH Ca. CO 3 Si. H 4 Simplified Ratio 1: 2 2: 3 1: 2: 1 1: 1: 3 1: 4 Ratio of masses 12: 2 6: 1 24: 3 8: 1 Fraction of total mass for each element % by mass C: 85. 7% H: 14. 3% 42 C: 88. 9% H: 11. 1% 162 12: 2: 16 6: 1: 8 C: 40% H 6. 7% O: 53. 3% 12: 1 C: 92. 3% H: 7. 7% 40: 12: 48 10: 3: 12 Ca: 40% C: 12% O: 48% 28: 4 7: 1 Relative molecular mass (amu) Si: 87. 5% H: 12. 5% 180 78 100 32
![Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6 Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-40.jpg)
Molecular Formula C 2 H 8 N 2 CH 4 C 2 H 6 O 2 C 2 H 6 C 10 H 8 C 2 H 2 O 4 Ratio 2: 6: 2 1: 4 2: 6: 2 2: 6 10: 8 2: 2: 4 Empirical formula CH 4 N CH 4 CH 3 O CH 3 C 5 H 4 CHO 2 Simplified Ratio 1: 4: 1 1: 4 1: 3: 1 1: 3 5: 4 1: 1: 2 Ratio of masses 12: 4: 14 6: 2: 7 12: 4 3: 1 12: 3: 16 12: 3 4: 1 60: 4 15: 1 12: 1: 32 Fraction of total mass for each element % by mass C: 40% H: 13. 3% N: 46. 7% C: 75% H: 25% C: 38. 7% H: 9. 7% O: 51. 6% Relative molecular mass (amu) 60 16 62 C: 80% H: 20% 30 C: 93. 75% H: 6. 25% 128 C: 26. 7% H: 2. 2% O: 71. 1% 90
![Alternative ratio activity Alternative ratio activity](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-41.jpg)
Alternative ratio activity
![Match the following molecules that contain the same ratio of elements CH 2 O Match the following molecules that contain the same ratio of elements. CH 2 O](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-42.jpg)
Match the following molecules that contain the same ratio of elements. CH 2 O C 2 H 2 O C 4 H 8 H 2 O 2 C 6 H 12 O 3 C 5 H 10 C 6 H 12 C 2 H 4 O 2 C 6 H 12 O 6 C 2 H 6 O C 2 H 4 C 5 H 8 O C 3 H 6 O 3 C 6 H 6 The simplest ratio of elements in a compound is called the empirical formula can you find the empirical formula for each compound?
![Extension The mass of each of the compound is shown on the next Extension • The mass of each of the compound is shown on the next](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-43.jpg)
Extension • The mass of each of the compound is shown on the next slide. • Can you work out the mass of the following atoms H (hydrogen) C (carbon O (oxygen)
![C 2 H 2 26 CH 2 O 30 H 2 O 18 C C 2 H 2 26 CH 2 O 30 H 2 O 18 C](https://slidetodoc.com/presentation_image_h/14b8635d52a988ed3ae5209506a34600/image-44.jpg)
C 2 H 2 26 CH 2 O 30 H 2 O 18 C 4 H 8 56 CH 4 16 C 6 H 12 O 3 132 C 5 H 10 70 C 6 H 12 84 C 2 H 4 O 2 60 C 6 H 12 O 6 180 C 2 H 6 O 46 C 2 H 4 28 C 3 H 6 O 3 90 C 5 H 8 O 84 C 6 H 6 78
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