Unit 1 Properties of Matter

What are three properties of a substance that you can determine just by looking at it?

• Color

• State

• Size

• Weight

What happens to molecules of water when you heat them in a pan?

• The molecules expand

• The molecules move faster

• The molecules move closer together

• The molecules break apart into separate atoms

What are the 3 states of matter?

Students are in the science lab.  Their assignment is to make ice.  They have a beaker of water that is at room temperature.  They decide to place the beaker in the freezer.  What are the physical changes that will happen to the water?

• The water will change from a liquid to a solid.
• The water will change from a liquid to a gas.
• The water will change from a solid to a liquid.
• The water will change from a gas to a liquid.

A student fills a beaker with water and places it on a hot plate. How will the water in the beaker be affected by the addition of heat?

• It will change from a liquid to a gas.
• It will change from a gas to a solid.
• It will change from a liquid to a solid.
• It will change from a gas to a liquid.

Which form of matter will EXPAND to fill the a container like it has in the balloon?

• liquid

• string

• solid

• gas

Which form of matter does not take the shape of its container?

• liquid
• gas
• solid
• air

Which state of matter has the most tightly packed molecules?

• solid
• liquid
• gas

Particles of a liquid

• are tightly packed together and stay in a fixed position.
• have no viscosity.
• decrease in volume with increasing temperature.
• are free to move around one another but still are still loosely connected.

What is evaporation?

• when a gas loses energy its' particles will slow down and come together to form a liquid
• when a solid gains energy its' particles will speed up and move further apart to form a liquid
• when a liquid gains energy (heats up) its' particles will begin to move faster and separate to form a gas
• when a liquid cools (loses energy) its' particles will slow down and come close together to form a solid