Changes in Matter

A change that involves one substance being pulled apart or combined with another substance to form a completely different substance or substances

• physical change

• chemical change

• physical property

• chemical property

A characteristic that can be observed or measured only when atoms rearrange during a chemical change

• physical property

• chemical property

• physical change

• chemical change

A change in the way something reflects light; can indicate a chemical change

• precipitate

• color change

• compound

• new substance

A new substance with unique chemical and physical properties formed when two+ elements are bonded

• precipitate

• color change

• compound

• new substance

A characteristic that can be observed or measured without changing the substance

• physical property

• chemical property

• physical change

• chemical change

A change to a substance that occurs without forming a new substance, such as a change in size or state of matter

• physical property

• chemical property

• physical change

• chemical change

Evidence of a new substance formed from a chemical change: includes bubbles, fizzing, or odor change

• temperature change

• gas production

• color change

• precipitate

Evidence of a new substance formed from a chemical change: solid particles formed or separated out of a liquid

• temperature change

• gas production

• color change

• precipitate

Increase or decrease of heat energy in a substance; may be evidence of a new substance formed during a chemical change

• temperature change

• gas production

• reactant

• precipitate

a substance that takes part in and undergoes change during a reaction.

• reactant

• precipitate

• new substance

• compound