Front

What are solids?

Back

Solids are a phase of matter where molecules are packed closely together and hardly move. They have a definite shape and volume.

Tags

NGSS.MS-PS1-4

Front

What are liquids?

Back

Liquids are a phase of matter that have a definite volume but no definite shape. They take the shape of their container.

Tags

NGSS.MS-PS1-4

Front

What are gases?

Back

Gases are a phase of matter that have no definite shape and no definite volume. They expand to fill their container.

Tags

NGSS.MS-PS1-4

Front

What is the definition of matter?

Back

Matter is anything that has mass and takes up space.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force of gravity acting on that mass.

Front

What is a plasma?

Back

Plasma is a state of matter similar to gas but with charged particles. It conducts electricity and is found in stars.

Front

What does it mean for a substance to have a definite shape?

Back

A substance with a definite shape maintains its form and does not change shape unless acted upon by an external force.

Front

What does it mean for a substance to have a definite volume?

Back

A substance with a definite volume maintains the same amount of space it occupies, regardless of the shape of its container.

Front

Can atoms change form?

Back

Yes, atoms can change form through chemical reactions, where they rearrange to form new substances.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is the molecular arrangement in solids?

Back

In solids, molecules are tightly packed together in a fixed arrangement.