Chemical Reactions Everywhere

Front

What is a chemical reaction?

Back

A process where substances (reactants) change into new substances (products) with different properties.

Front

Which of the following is NOT a chemical reaction?

Back

Cutting a piece of paper in half.

Front

What is evidence of a chemical reaction?

Back

Color change, production of gas, temperature change, and formation of a precipitate.

Front

What happens when an apple turns brown?

Back

It is an example of a chemical reaction due to oxidation.

Front

True or false: You can always tell if a chemical reaction has happened.

Back

False; some reactions may not have obvious signs.

Front

What is NOT evidence of a chemical reaction?

Back

Melting.

Front

What are properties of matter?

Back

Characteristics such as color, texture, size, and anything measurable.

Front

What is an example of a chemical reaction producing gas?

Back

Baking soda mixed with vinegar produces carbon dioxide gas.

Front

What is oxidation?

Back

A chemical reaction where a substance combines with oxygen, often producing heat and light.

Front

What is a precipitate?

Back

A solid that forms from a solution during a chemical reaction.