District 2 Test- Matter and Energy Review

Emma, Daniel, and Benjamin are having a snowball fight on a chilly winter day. They notice that the snowballs they make are melting in their hands. This is because heat is transferring from their hands to the snowball. How does this heat transfer from one solid (their hand) to another solid (the snowball)?

• through conduction

• through convection

• through insulation

• through radiation

Imagine David, Abigail, and Zoe are having a fun science experiment. David stirs a hot cup of coffee with a metal spoon and notices it gets warm. Can you guess why the spoon gets warm?

• Heat energy transfers from the metal spoon to the hot liquid

• Heat energy transfers from the hot coffee to the spoon. 

• Heat energy transfers from the air to the hot liquid and then to the spoon. 

• Heat energy transfers from the hot liquid to the cup, and then to the spoon. 

What happens to metals when heated?

• Metals shrink when heated.
• Metals change color when heated.
• Metals become less dense when heated.
• Metals expand when heated.

Why are pots used for cooking made of metal?

• Metal is a good conductor of heat

• Metal looks nice

• Metal is a bad conductor of heat

• metal is a type of rock 'n roll music

Avery, Michael, and David are having an ice cream party! They each have a different type of bowl to put their ice cream in. Avery has a foam bowl, Michael has a glass bowl, and David has a metal bowl. If they all fill their bowls with ice cream, whose bowl will be less likely to feel cold on the outside?

• Avery's foam bowl

• Michael's glass bowl

• David's metal bowl

• None of them

Ice in a plastic cooler melts slower than ice in metal container because...

• Metal is a better insulator than plastic.

• Plastic absorbs heat faster than metal.
• Plastic is a better insulator than metal.

• Plastic has a higher melting point than metal.

A paper weighs 4 grams and is torn into pieces. If all the pieces are weighed, what would be their total mass?

• 2.5 grams

• 5 grams

• 4 grams

• 8 grams

Greg added 2 grams of salt to 15 grams of water. What is the total weight of the solution?

• 2 grams

• 13 grams

• 30 grams

• 17 grams

Unlike most liquids, what happens to water when it freezes?

• It expands (becomes larger)

• It contracts (becomes smaller)

• It changes into soda

• It puts on a jacket because it is cold

When logs on a fire burn in a campfire we know a chemical change has occurred because...

• the wood changed shape

• the wood became a different substance

• the wood was glowing

• none of the above