If there only about 100 types of elements
If there only about 100 types of elements in the world, why are there so many different kinds of matter? Seconds Left: 140 120 130 30 40 50 60 70 10 2 3 4 5 6 7 8 9 0 180 20 160 90 150 170 100 110 180
Elements can combine in many different ways to form many different types of matter.
Describe the difference between a mixture and a compound. Seconds Left: 120 140 130 70 60 50 40 30 10 9 8 7 6 5 4 3 2 0 180 20 160 90 80 170 150 110 100 180
Compounds are chemically combined, mixtures are not.
Define: Solute Solvent Solution Seconds Left: 140 120 130 30 40 50 60 70 10 2 3 4 5 6 7 8 9 0 180 20 160 90 150 170 100 110 180
Solution – homogeneous mixture where a solute is dissolved in a solvent Solute – the matter that gets dissolved Solvent – the matter that does the dissolving
Which kind of mixture is sometimes difficult to distinguish from a compound? Why? This screen will disappear in 3 minutes. 140 120 130 30 40 50 60 70 10 2 3 4 5 6 7 8 9 0 180 20 160 90 150 170 80 100 110 1 Seconds Remaining.
Homogeneous mixtures because the mixtures are the same throughout
Define the terms: Element Mixture Compound Molecule Seconds Remaining: 140 120 130 30 40 50 60 70 10 2 3 4 5 6 7 8 9 0 180 20 160 90 150 170 100 110 180
ELEMENT – matter made of only one type of atom; a pure substance MIXTURE – a combination of different types of matter in no fixed proportion; can be physically taken apart COMPOUND – a combination of different types of matter in specific proportions; must be chemically taken apart MOLECULE – the smallest part of a compound that has all the properties of that compound
- Slides: 10