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.MS-PS1-4

NGSS.MS-PS3-4

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 solid?

• particles that are tightly compacted

• particles that are not tightly compacted

Tags

NGSS.MS-PS1-1

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

• the molecules move only in their place in form of vibrations.

• the molecules are moving around each other.

• the molecules are moving away from each other.

• the molecules are not moving

The amount of space that matter takes up is its _______.

• atom
• volume
• matter
• weight

When a substance melts, the kinetic energy _____________.

• decreases
• stays the same
• increases
• decreases then increases

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Definite shape and definite volume

• solid
• liquid
• gas
• solid, liquid and gas

No definite shape or volume

• solid
• liquid
• gas
• solid, liquid and gas

Definite volume but not definite shape

• solid
• liquid
• gas
• solid, liquid and gas

The amount of force pushing on an area is the definition of....

• Fluid
• Viscosity
• Barometer
• Pressure