Elements and Compounds Lesson 2 Elements v Compounds

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Elements and Compounds Lesson 2

Elements and Compounds Lesson 2

Elements v. Compounds Element – Oxygen Compound – Carbon Dioxide

Elements v. Compounds Element – Oxygen Compound – Carbon Dioxide

The Letters of Life v Just like words are made up of letters, compounds

The Letters of Life v Just like words are made up of letters, compounds are made up of elements

Water

Water

Baking Soda

Baking Soda

Capsaicin

Capsaicin

Sugar

Sugar

Gun Powder

Gun Powder

Chips!

Chips!

Questions v What is an element? v What is a compound?

Questions v What is an element? v What is a compound?

Pure Substance? ? Matter Pure Substance Element Compound Mixture

Pure Substance? ? Matter Pure Substance Element Compound Mixture

Naming Chemicals and Formulas n e og r d y H Wa ss e

Naming Chemicals and Formulas n e og r d y H Wa ss e n e ers Hy tof o n e g o idr H g o dr Id f io n e H g o r id ro ge no Why would it be confusing if everyone used different names for chemicals?

IUPAC v International Union of Pure and Applied Chemistry v The symbols for the

IUPAC v International Union of Pure and Applied Chemistry v The symbols for the elements were the First Letter of the elements name. v When they used that letter the next element stating with the same name used a lower case letter.

Periodic Table

Periodic Table

Questions v Why is the Symbol “C” used for Carbon and not for Calcium?

Questions v Why is the Symbol “C” used for Carbon and not for Calcium? v Why is the symbol for lead “Pd” and not “Le”?

Writing/Reading Chemical Formulas H 2 O(l) Two Hydrogen One Oxygen Liquid

Writing/Reading Chemical Formulas H 2 O(l) Two Hydrogen One Oxygen Liquid

Compound Name Common Use Chemical Formula Calcium carbonate Chalkboard chalk Ca. CO 3(s) Sodium

Compound Name Common Use Chemical Formula Calcium carbonate Chalkboard chalk Ca. CO 3(s) Sodium phosphate Heavy-duty cleaner Na 3 PO 4(s) Magnesium chloride De-icing roads Mg. Cl 2(s) Monosodium glutamate (MSG) Food seasoning Na. C 5 H 8 NO 4(s) Hydrogen peroxide Bleach and disinfectant H 2 O 2(l) Glucose Sugar C 6 H 12 O 6(s) Carbon dioxide Fizz in pop, dry CO 2(g) ice Freon-12 Refrigerator coolant CCl 2 F 2(g) Number and Name of Elements Total Number of Atoms

Decomposition Reaction

Decomposition Reaction

Water Electrolysis v Answer questions 1, 2, 3, 4 on pg 33 H H

Water Electrolysis v Answer questions 1, 2, 3, 4 on pg 33 H H O

Pg. 34 Questions 1 -4

Pg. 34 Questions 1 -4

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