matter and change (Amplify Phase Change)

Front

What is matter?

Back

Matter is anything that has mass and takes up space.

Front

What is a physical change?

Back

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

Front

What is a chemical change?

Back

A chemical change occurs when a substance transforms into a different substance with different properties.

Front

What happens to the molecules of a substance when it is heated?

Back

The molecules move faster and may change state from solid to liquid or liquid to gas.

Front

What is the melting point?

Back

The melting point is the temperature at which a solid becomes a liquid.

Front

What is the boiling point?

Back

The boiling point is the temperature at which a liquid becomes a gas.

Front

What is a precipitate?

Back

A precipitate is a solid that forms when two liquids are mixed together.

Front

What is a physical property?

Back

A physical property is a characteristic of a substance that can be observed or measured without changing its identity.

Front

What is a chemical property?

Back

A chemical property describes a substance's ability to undergo a specific chemical change.

Front

What happens to the kinetic energy of molecules when they cool down?

Back

The kinetic energy decreases, causing the molecules to move slower.