7.1 Chemical Reactions

Front

What is the simplest unit of a chemical compound that can exist?

Back

A molecule, formed when two or more atoms join together chemically.

Front

How many Carbons are present on the reactant side in a chemical equation?

Back

1

Front

How do chemical reactions turn substances into new substances?

Back

The atoms break apart and combine back together in new ways.

Front

What is a common sign that a chemical change has occurred?

Back

A chemical has turned a different color, bubbled, and/or changed temperature.

Front

What is made of more than one atom?

Back

A molecule.

Front

What is a chemical reaction?

Back

A process where substances (reactants) are transformed into new substances (products) through the breaking and forming of bonds.

Front

What is a reactant?

Back

A substance that is present at the start of a chemical reaction.

Front

What is a product in a chemical reaction?

Back

A substance that is formed as a result of a chemical reaction.

Front

What does it mean when a chemical reaction is exothermic?

Back

It releases energy, usually in the form of heat.

Front

What does it mean when a chemical reaction is endothermic?

Back

It absorbs energy from its surroundings.