Understanding Matter

What is the scientific definition of matter?

• Anything that can be seen or touched

• The substance that makes up everything in the universe

• A type of energy

• A form of light

Which of the following is NOT a property of matter?

• Color

• Shape

• Sound

• Temperature

Which state of matter has a definite shape and volume?

• Plasma

• Gas

• Liquid

• Solid

How do liquids differ from solids in terms of shape?

• Liquids have a definite shape

• Liquids take the shape of their container

• Liquids have no volume

• Liquids are always thicker than solids

What unit is commonly used to measure the mass of an object?

• Gram

• Meter

• Liter

• Cubic centimeter

What happens to the molecules of a solid when it melts?

• They change color

• They move apart and become more fluid

• They stop moving

• They move closer together

What is the process called when a liquid changes to a gas?

• Freezing

• Evaporation

• Condensation

• Solidification

Which process describes a gas turning into a liquid?

• Sublimation

• Melting

• Condensation

• Evaporation

What causes molecules to move faster and change state?

• Adding heat

• Removing heat

• Increasing pressure

• Decreasing pressure

Why can matter change from one state to another?

• Because of changes in light

• Due to the movement of molecules

• Due to changes in sound

• Because of changes in color