Lessons 1, 2, and 3 Review

Front

What is the law of conservation of matter?

Back

Matter cannot be created or destroyed; it can only change forms.

Front

All matter is made of _____________.

Back

Particles.

Front

What happens when a bath bomb is mixed with water?

Back

The gas produced is a result of the ingredients/chemicals mixing with water.

Front

What is a closed system?

Back

A system where no matter enters or leaves, like a sealed water bottle with a bath bomb.

Front

Is the gas that escapes from a closed system considered new matter?

Back

No, it is not new matter; it is a transformation of existing matter.

Front

Define matter.

Back

Anything that has mass and takes up space.

Front

What are particles?

Back

The small units that make up all matter, including atoms and molecules.

Front

What is an open system?

Back

A system where matter can enter or leave, like an open container.

Front

Give an example of a chemical change.

Back

When vinegar and baking soda react to produce carbon dioxide gas.

Front

What is a physical change?

Back

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