1. Vocabulary – Advanced Class
Matter Unit 1.3 Week of August 22, 2016 You will need 4 index cards

2. S8P1. Students will examine the scientific view of the nature of matter.
e. Distinguish between changes in matter as physical (i.e., physical change) or chemical (development of a gas, formation of precipitate, and change in color).

3. eactivity, combustability, precipitate, oxidation)  chemical change, physical change, sublimation,  

4. crumpling a sheet of aluminum foil melting an ice cube
Physical Changes
A material may change shapes or forms while undergoing a physical change, but no chemical reactions occur and no new compounds are produced.
the identity of the matter does not change.
Easier or possible to change back.
Examples:
crumpling a sheet of aluminum foil
melting an ice cube
casting silver in a mold
breaking a bottle

6. Chemical Change Examples: burning wood souring milk
mixing acid and base
digesting food
cooking an egg
heating sugar to form caramel
baking a cake
rusting of iron
Chemical Change
A Material changes and produces a new substance.
A new compound (product) results from a chemical change as the atoms rearrange themselves to form new chemical bonds.
Difficult or impossible to reverse.

7. Crash Course Chemical Changes

8. Reactivity
Reactivity in science refers to how various chemicals participate in chemical reactions when they are exposed to other substances.
 A chemical that reacts easily with other substances is considered highly reactive.
Examples:
One example of a reactive material is magnesium, which burns brightly when heated. In contrast, platinum does not burn when heated and it is considered non-reactive.
Some chemicals react together so strongly that they create a new substance called a compound. A common example of a compound formed through reactivity is water, formed when hydrogen and oxygen react.

9. Sublimation
When a solid changes directly to a gas, skipping the liquid phase.