Unit 1 Formative Assessment

Front

What is a chemical property of a substance?

Back

A characteristic that can only be observed during a chemical reaction, such as reactivity with air or water.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is condensation?

Back

The process by which a gas turns into a liquid, often when it cools.

Front

What is density?

Back

The mass of a substance divided by its volume, often expressed in grams per cubic centimeter (g/cm³).

Front

How do you calculate density?

Back

Density = Mass / Volume.

Front

What is the boiling point of copper?

Back

The temperature at which copper changes from a liquid to a gas, which is 2567°C.

Front

What happens to leaves during photosynthesis?

Back

Leaves convert sunlight into chemical energy, producing sugar and oxygen.

Front

What is the significance of a green layer forming on copper?

Back

It indicates a chemical reaction with air, resulting in the formation of copper carbonate.

Front

What is an example of a physical change in a garden?

Back

Earthworms loosening soil as they travel through it.

Front

What is sublimation?

Back

The process where a solid changes directly into a gas without becoming a liquid first.