Matter test practice

They have remained the same

They have become more complex

They have become simpler

They have been replaced by molecule models

Different chemical properties

Many similar characteristics

Different atomic numbers

Different atomic masses

A nucleus made up of protons and neutrons, surrounded by electrons

A solid sphere with no internal structure

A flat disk with electrons on the surface

A single particle with no subatomic parts

Physical properties can be observed without changing the substance, chemical properties involve a change

Physical properties involve a change, chemical properties do not

Both involve changes in the substance

Neither involves changes in the substance

Density

Melting point

Reactivity with oxygen

Color

Energy is either released or absorbed

Energy remains constant

Energy is always absorbed

Energy is always released

A material with a constant composition

A mixture of different elements

A compound with varying composition

A solution with dissolved substances

The temperature at which a liquid turns to gas

The temperature at which a solid turns to liquid

The temperature at which a gas turns to liquid

The temperature at which a solid turns to gas

A negatively charged subatomic particle

A positively charged subatomic particle

A neutral subatomic particle

A particle with no charge

Physical changes

Chemical changes

Nuclear changes

Thermal changes