Physical Science Review

Which state of matter has a definite shape?

• Solid
• Liquid
• Gas
• All of the above.

How does water particles behave when they are in the gaseous state? 

• They move around very slowly
• They are packed together very tightly.
• They move quickly and freely.
• They do not move at all.

Which of the following is a physical change of water?

• Snow
• Ice
• Steam
• All of the above

Which of the following is a physical change?

• A nail rusting.
• Wood burning.
• Vinegar and baking soda mixing together to create a gas.
• Tearing a piece of paper into two pieces.

How do you know if a physical change has occurred?   

• A new substance has been created.
• A change has been made on a molecular level.
• A change has occurred in the size, shape, or state of matter.
• None of the above.

Ice melting is an example of ________

• A chemical change.
• A physical change.
• No change has occurred.
• A new substance being formed.

Which of the following is an example of a chemical change?

• Ice melting.
• Steam leaving a hot tub.
• A nail rusting.
• Water freezing into ice.

What is matter?

• Volume of an object
• Anything that has mass and takes up space
• Mass of an object
• Space of an object

Which state of matter takes the shape of its container?

• solid
• gas
• liquid

the smallest unit of matter is called

• at atom
• a molecule
• a compound
• a pure substance