Matter Unit 1.3 Week of August 22, 2016 Vocabulary – On-level Matter Unit 1.3 Week of August 22, 2016

crumpling a sheet of aluminum foil melting an ice cube Physical Changes A change in a substance that does not change its identity. It is still the same substance after a change. Examples: crumpling a sheet of aluminum foil melting an ice cube casting silver in a mold breaking a bottle

Examples: burning wood mixing acid and base digesting food cooking an egg baking a cake rusting of iron Chemical Change A Change in which one or more substances combine or break apart to form a new substance.

Chemical vs. Physical Change Video https://www.youtube.com/watch?v=BgM3e8YZxuc

Precipitate A solid that forms from a solution during a chemical reaction.

Precipitate Example Video https://www.youtube.com/watch?v=73dw6w0zNXA

Reactivity The ease and speed with which an element combines, or reacts, with other elements and compounds.

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

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.

Oxidation http://study.com/academy/lesson/what-is-oxidation-definition-process-examples.html

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