Science

Unit 6 6th grade science

matter

Anything that has mass and occupies space.

Solod

Matter in a fixed shape and volume, with particles tightly packed together.

Liquid

Matter that has a definite volume but takes the shape of its container. Its particles are close together but can flow freely.

Gas

Matter that has no definite shape or volume, with particles that are far apart and move freely.

Phase change

The process of matter transitioning from one state (solid, liquid, or gas) to another due to changes in temperature or pressure.

melting/freezing point

The temperature at which a solid turns into a liquid (melting) or a liquid turns into a solid (freezing).

boiling/condensing point

The temperature at which a liquid turns into a gas (boiling) or a gas turns into a liquid (condensing).

kinetic theory of matter

all matter consist of tiny particles in constant, random motion

Heating curve

A diagram of temperature versus amount of energy added over time

A substance has atoms that are orderly and close together. What state of matter is this?

Solid

A substance has atoms that are somewhat close together and somewhat organized. What state of matter is this?

Liquid

A substance has atoms that are far apart and very unorganized. What state of matter is this?

Gas