Chemistry Fast & Curious

Front

What is a chemical reaction?

Back

A process where substances change into new substances with different properties.

Front

What is a precipitate?

Back

A solid that forms and settles out of a liquid mixture during a chemical reaction.

Front

Which material conducts electricity?

Back

Copper is a good conductor of electricity.

Front

What is a physical change?

Back

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

Front

What is a chemical change?

Back

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

Front

What is a coefficient in chemistry?

Back

A number placed in front of a chemical formula to indicate how many molecules are involved in a reaction.

Front

What happens when a candle wick burns?

Back

It undergoes a chemical reaction producing heat, light, and new substances.

Front

What is the difference between physical and chemical changes?

Back

Physical changes do not create new substances, while chemical changes do.

Front

What is an example of a chemical change?

Back

Burning a piece of paper.

Front

What is an example of a physical change?

Back

Cutting a piece of paper.