Changes of State Quiz

What happens to icebergs as outdoor temperatures rise?

• They freeze more.

• They start to melt.

• They grow larger.

• They stay the same.

What will you be able to do by the end of the lesson on changes of state?

• Describe how plants grow.

• Explain how animals move.

• Model and explain how a change in thermal energy can influence a change of state.

• Identify different types of rocks.

What is gallium?

• A type of rock

• A soft silvery metal

• A type of plastic

• A kind of wood

At what temperature can you cut gallium with a knife?

• At freezing temperature

• At room temperature

• At boiling temperature

• At very high temperature

What is the process called when matter changes from one state to another?

• Evaporation

• Condensation

• Change of state

• Freezing

During a change of state, what happens to the number of particles in a substance?

• They increase

• They decrease

• They stay the same

• They disappear

What is the main goal of the "Investigate a Change of State" lab?

• To predict how to make an ice cube melt faster

• To build a model of an ice cube

• To learn how to freeze water

• To create a new type of ice cube

Which materials are needed for the lab activity?

• 4 small ice cubes, clear plastic cups, paper towels

• 4 large ice cubes, metal cups, napkins

• 4 small ice cubes, glass cups, tissues

• 4 large ice cubes, plastic bags, paper towels

What should you do in Step 1 of the procedure?

• List ways to make an ice cube melt faster

• Freeze the ice cubes

• Throw the ice cubes away

• Paint the ice cubes

In Step 3, where should you place one of the ice cubes?

• In a cup on your desk

• In the freezer

• In a bowl of water

• In a plastic bag