Chem unti 1 quiz

Identifying Physical & Chemical Properties Identifying Physical & Chemical Changes States of Matter & Phase change names

Physical Properties

Characteristics that can be observed w/ out altering the identity of the substance

density, color, melting point, state of matter

Chemical Properties

Characteristics of a substance that cannot be observed without altering the substance

flammability

Physical Change

Does not alter the identity of the substance

phase change

Chemical Change

Alters the identity of the substance

burning

Indications of Chemical change

Transfer of energy, change in color, production of a gas, formation of a precipitate, change in pH

Precipitate

A solid that forms and settles out of a liquid mixture

Solid

Definite shape & volume, not easily compressed, strong forces of attraction between particles

Liquid

Indefinite shape, definite volume, not easily compressed, weak forces of attraction between particles

Gas

Indefinite shape, indefinite volume, easily compressed, no attraction between particles

Sublimation

Solid to Gas

Deposition

Gas to Solid

Melting

Solid to Liquid

Freezing

Liquid to Solid

Vaporization

Liquid to Gas

Condensation

Gas to Liquid

Exothermic

Reaction that releases energy into the environment (heat increase)

Endothermic

Reaction that absorbs energy from the environment (heat decrease)