Unit 4 vocab + states, physical + chemical changes + law consv

Front

What are the three states of matter?

Back

Solid, Liquid, Gas.

Front

What is a solid?

Back

A state of matter with a definite shape and volume.

Front

What is a liquid?

Back

A state of matter that has a definite volume but takes the shape of its container.

Front

What is a gas?

Back

A state of matter that has no definite shape or volume.

Front

What are reactants in a chemical equation?

Back

Substances that undergo a chemical change in a reaction.

Front

In the equation '2 Na + Cl₂ → 2 NaCl', what are the products?

Back

NaCl.

Front

What is a mixture?

Back

Two or more substances that are together in the same place but their atoms are not chemically bonded.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances.

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 the law of conservation of mass?

Back

Matter isn't created or destroyed in a chemical reaction.