Matter: States, Physical/Chemical Properties and Changes

Front

What is a physical change?

Back

A physical change involves the altering of an object or substance with no change in composition, only in appearance.

Front

What is an example of a chemical property?

Back

Ability to rot/spoil.

Front

What is a molecule?

Back

A particle composed of at least 2 atoms that are chemically bonded together.

Front

What is an example of a chemical change?

Back

Baking soda reacting with vinegar.

Front

What is sublimation?

Back

The process when solid dry ice becomes a gas.

Front

What distinguishes a physical property from a chemical property?

Back

A physical property can be observed without changing the substance's composition, while a chemical property can only be observed during a chemical reaction.

Front

What are the three main states of matter?

Back

Solid, liquid, and gas.

Front

What happens to the particles in a solid when it melts?

Back

The particles gain energy and move more freely, transitioning to a liquid state.

Front

What is the law of conservation of mass?

Back

In a chemical reaction, mass is neither created nor destroyed; it remains constant.

Front

What is an example of a physical change?

Back

Melting ice.