Science Fusion Unit 13

What is the term for the amount of space something takes up?

• matter

• volume

• density

• temperature

Which is the best description of what happens during a chemical reaction?

• A substance goes through a chemical change.

• The properties of a substance are changed.

• A new substance is formed during a chemical change.

• The type of matter in the substance remains unchanged.

Which term means “a combination of two or more substances that keep their identities”?

• matter

• mixture

• solution

• compound

What term is used to identify a mixture that has the same composition throughout?

• liquid

• element

• solution

• compound

Which term names the type of matter made of just one kind of atom?

• solid

• element

• molecule

• compound

Which term names a substance formed by two or more types of atoms that are chemically combined?

• matter

• mixture

• solution

• molecule

Which term names the smallest unit of a pure substance that has the properties of that substance?

• atom

• matter

• element

• molecule

Which term or phrase best describes what happens when a tomato rots?

• physical change

• chemical change

• conservation of mass

• formation of a compound

The states of matter differ in many ways, including shape and volume. The following three figures show the particles in a solid, a liquid, and a gas. Which of the following correctly identifies the state of matter?

• 3: gas

• 2: solid

• 1: liquid

• 2: liquid

The graph shows the changes in state of water at sea level. Based on the graph, which of the following is true?

• Liquid water boils at temperatures between 0 °C and 100 °C.

• Solid water melts, forming liquid water, at temperatures below 0 °C.

• Liquid water freezes, forming solid water, at temperatures greater than 0 °C.

• Water vapor condenses into liquid water when temperatures drop below 100 °C.