Energy and Matter Test

Mike is racing his electric toy truck. The truck hits a brick wall, and the front of the truck gets crushed. If the truck originally had a mass of 2.0 kg, how much mass does it most likely now have?

• 1.5 kg
• 1.9 kg
• 2.0 kg
• 2.2 kg

Ricco is making paper air planes. He uses 5 grams of paper to make 10 paper airplanes. If he weighs the paper airplanes, which is their total mass?

• 5 grams
• 10 grams
• 15 grams
• 20 grams

If 10 grams of water are added to 5 grams of salt, how much salt water will be made?

• 2 grams
• 5 grams
• 10 grams
• 15 grams

Kevin has 1,200 g of salt water. Which are the correct measures of salt and water before they were mixed?

• 600 grams salt 500 grams water
• 900 grams salt 200 grams water
• 700 grams salt 500 grams water
• 1,200 grams salt 1,200 grams water

Laura placed 20 grams each of water, grape juice, orange juice, and coffee in an ice cube tray. Laura wanted to see what the mass of each liquid would be after freezing. Which is most likely Laura’s conclusion when she weighs the frozen samples?

• Each sample will weigh 40 grams
• Each sample will weigh 25 grams
• Each sample will weigh 20 grams
• Each sample will weigh 15 grams

Joe melted two 4-oz sticks of butter. Which best describes the weight of the melted butter?

• 2 oz
• 4 oz
• 6 oz
• 8 oz

Jamie weighs a glass of water and observes its weight to be 12 ounces. Jamie then adds 6 ice cubes to the glass of water. Each ice cube weighs one ounce. After all of the ice cubes have melted, what will be the approximate weight of the glass of water?

• 6oz
• 12oz
• 18oz
• 24oz

Which best explains why boiling water is an example of a physical change?

• the heat causes steam
• heat is added causing evaporation
• heating the water causes solids to form
• the water changes from a liquid to a gas

Which example best describes a physical change?

• baking a pie
• burning a candle
• making a paper airplane
• an apple turning brown

A family goes camping and creates a fire to roast marshmallows. The next morning, the kids notice that the logs are no longer there, and all that remains are ashes. Which best explains why the ashes from a log are evidence of a chemical change?

• The color of the wood changed from brown to gray.
• The ashes cannot be put back together to create a log again. 
• The wood breaks down into smaller matter when burned.
• Something was added to the log, and it cannot be removed.