1. Vocabulary – Advanced Class
Matter Unit 1.3 Week of August 22, 2016

2. Anything that has mass and takes up space.
Matter
Anything that has mass and takes up space.

3. Chemical vs. Physical Change Video

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

5. 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.

6. Crash Course Chemical Changes

7. Precipitate
A precipitate is an insoluble solid that emerges from a liquid solution.
The emergence of the insoluble solid from solution is called precipitation.
Often the precipitate emerges as a suspension.

8. Precipitation Reactions: Crash Course Chemistry Video

9. 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.

10. Tarnish
A thin layer of corrosion that forms over some metals as their outermost layer undergoes a chemical reaction.
Examples:
Rust on a Nail
Silver that turns dark

11. Oxidation
Oxidation is the process when oxygen combines with an element, changing the appearance of the element.
Example:
When iron reacts with oxygen and changes to rust, this is an example of oxidation.
When an apple turns brown.

12. Oxidation

13. Flammability
Flammability is the ability of a substance to burn or ignite, causing fire or combustion.