1. CHEMICAL PROPERTIES Describe a substance based on its ability to change into a new substance with different properties Different Properties!!!

2. FLAMMABILITY (NON-FLAMMABLE, INFLAMMABLE) REACTIVITY INERT OXIDATION TARNISH CORROSION (pitting, rust) ELECTROLYSIS CHEMICAL PROPERTIES

3. Flammability: the ability of a substance to burn Reactivity: the ability of two or more substances to combine and form one or more new substances Corrosion: process in which a solid, esp a metal, is eaten away and changed by a chemical action

4. Oxidation Discoloration of fruit like apples, bananas, and pears when sliced.

5. CORROSION Metals decay over time due to chemicals in the air or water…

6. ELECTROLYSIS Extract pure sodium metal and pure chlorine gas from salt water

7. Sodium in Water Physical Properties of Sodium are: Chemical Properties of Sodium are:

8. Sodium and Chlorine How are the properties of Sodium different from its product, table salt? How are the properties of Chlorine different from its product, table salt? What property are you observing? What clues to a chemical reaction are present?

9. A WESOME E XAMPLES Physical vs. Chemical Changes

10. Why are …Chemical Change? Fireworks

11. Why are …Chemical Change? Fireworks COLOR CHANGE GAS, FIZZ, BUBBLES… odor ENERGY CHANGE PRECIPITATE irreversible

12. CLUES FOR A CHEMICAL CHANGE COLOR ODOR ENERGY (___________, _________, ___________, _________) GAS (__________, ________) PRECIPITATE

13. CLUES FOR A CHEMICAL CHANGE COLOR ODOR ENERGY Light, heat, mechanical, sound GAS (bubbles, fizzing) PRECIPITATE

14. DESCRIBE CHANGES! paperMarshmallow physicalchemicalphysicalchemical

15. DESCRIBE CHANGES! paperMarshmallow physicalchemicalphysicalchemical foldburn ripTreat w/ dye shredReact w/ acid

16. CHEMICAL PROPERTIES Relate to the ability of matter to go through a change into a new substance… List properties here:

17. CHEMICAL PROPERTIES Relate to the ability of matter to go through a change into a new substance… List properties here: ●flammability/non-flammable/inflammable ●reactivity oxidation corrosion ●ELECTROLYSIS ● Inert (does not react with many substances)

18. SubstancePhysical PropertyChemical Property Helium Wood Baking soda Powdered sugar Rubbing alcohol Red food coloring Iron DESCRIBE PROPERTIES!

19. Physical ChangesChemical Changes Aluminum foil is cut in half.Milk goes sour. Clay is molded into a new shape.Jewelry tarnishes. Butter melts on warm toast.Bread becomes toast. Water evaporates from the surface of the ocean. Rust forms on a nail left outside. A juice box in the freezer freezes.Gasoline is ignited. Rubbing alcohol evaporates on your hand. Hydrogen peroxide bubbles in a cut. Food scraps are turned into compost in a compost pile. A match is lit. You take an antacid to settle your stomach. Your body digests food. You fry an egg.

20. Demo of Chemical Changes substance Activity/clues

21. Matter Review Jeopardy Review Game

22. Comparing Physical and Chemical Changes Interactive Explanation of Properties Interactive Explanation Interactive Explanation of Changes Interactive Explanation Flashcards for Physical and Chemical Changes Flashcards Number your paper from 1 – 10 Online Quiz for Classwork Assessment Online Quiz (20 points)

23. SubstancePhysical PropertyChemical Property HeliumLess dense than airNon-flammable/Inert WoodGrainy textureFlammability Baking sodaWhite powderReacts with vinegar to produce bubbles (reactivity) Powdered sugarWhite powderDoes not react with vinegar (non-reactive) Rubbing alcoholClear liquidFlammable Red food coloringRed colorReacts with bleach and loses color (reactivity) IronMalleableReacts with oxygen (oxidation) DESCRIBE PROPERTIES!