Changes in Matter

Which of these is a physical change?

• Burning a piece of paper

• Cutting a piece of paper

• Looking at a piece of paper

• Thinking about a piece of paper

____ is when a gas changes into a liquid.

• Melting

• Evaporation

• Freezing

• Condensation

How much would a 3 pound container of ice cream weigh if you left it out and it all melted?

• A little more than 3 pounds

• A little less than 3 pounds

• A lot less than 3 pounds

• Exactly 3 pounds

Which of these is a chemical change?

• Dissolving sugar in water

• Putting dry ice in water

• Baking cupcakes in the oven

• Microwaving a cup of coffee

Matter that has a definite shape and definite volume is a:

• solid

• liquid

• gas

• zebra

Matter that has a definite volume and takes the shape of its container is a:

• solid

• liquid

• gas

• potato

Matter in which the particles move quickly and expand to fill up any volume is a:

• solid

• liquid

• gas

• choo-choo train

Your friend leaves his new bicycle out in the rain, and now rust is forming on the chain. What happened to the mass of the bike?

• The mass is a tiny bit more

• The mass is a tiny bit less

• The mass is exactly the same

• Bicycles don't have mass

A Kool-aid packet has 2 grams of powder. You add this to 2,000 grams of water along with 200 grams of sugar. How much does the combined Kool-aid weigh?

• 202 grams

• 2,020 grams

• 2,202 grams

• 2,222 grams

You place a block of dry ice inside of a sealed plastic bag. It weighs 10 grams. The next day, the bag is full of air. How much does it weigh?

• 10 grams

• less than 10 grams

• more than 10 grams

• a million grams