Solids melt when solid particles _____ energy, liquids freeze when liquid particles _____ energy.

• absorb, release
• release, absorb
• absorb, absorb
• release, release

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

During the melting change of state, does temperature...

• stay the same
• increase
• increase and decrease
• decrease

Tags

NGSS.MS-PS1-4

Which form of matter has a definite shape like this picture?

• liquid
• solid
• gas
• clay

Tags

NGSS.5-PS1-3

Which state of matter has a definite volume or size and a distinct shape at a given temperature?

• liquid

• gas

• solid

• all of the above

Which state of matter has a definite volume, but it takes the shape of its container with the help of gravity?

• solid

• liquid

• gas

• all of the above

Which state of matter has no fixed shape and no fixed volume?

• liquid

• gas

• solid

• all of the above

What is a solid?

• particles that are tightly compacted

• particles that are not tightly compacted

Tags

NGSS.5-PS1-3

what is a liquid?

• a substance that flows freely but is of constant volume

• a substance or matter in a state in which it will expand freely

• firm and stable in shape

what is a gas?

• a substance or matter in a state in which it will expand freely to fill the whole of a container

• the basic unit of a chemical element

• an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.

Tags

NGSS.5-PS1-1

NGSS.5-PS1-3

How would you describe the way molecules move when the molecules are solid?

• the molecules are moving in place.

• the molecules are moving around each other.

• the molecules are moving away from each other.

• the molecules are not moving

Tags

NGSS.MS-PS1-4