Unit 3 Science Review

Bob wants to find the volume of a box. What should he do after he measures all of the sides?

• Add the length, the width, and the height

• Add the length and the height

• Multiply the length by the height

• Multiply the length by the width and the height

John wants to separate the salt from salt water. Which of the following is the best option?

• allow the water to condense on a cold object

• allow the water to evaporate

• freeze the salt water

• keep the water at a constant temperature

Lemonade is an example of a ______.

• physical property

• chemical change

• solution

• solid

Which of the following is an irreversible change?

• burning a piece of toast

• mixing together pieces of fruit

• reshaping a ball of clay

• melting an ice cube

All objects have mass. Which statement is true?

• Mass measures how big an object is.

• Mass is usually measured in milliliters.

• The shape of an object is what gives it mass.

• As matter is added to an object, its mass increases.

Water changes state at different temperatures. A which temperature does water boil?

• 100 degrees Celsius

• 50 degrees Celsius

• 10 degrees Celsius

• 0 degrees Celsius

All the things you see around you have physical properties. Which of the following is a physical property?

• age

• speed

• color

• matter

Freezing is when…

• liquid changes to gas

• gas changes to a liquid

• liquid changes to a solid

• solid changes to a liquid

Condensation is when…

• liquid changes to gas

• gas changes to a liquid

• liquid changes to a solid

• solid changes to a liquid

Melting is when…

• liquid changes to gas

• gas changes to a liquid

• liquid changes to a solid

• solid changes to a liquid