Review: Chemical Bonds and Equations

Front

A substance made of two or more atoms bonded together is a(an) ________.

Back

molecule

Front

Carbon Dioxide has the chemical formula CO₂. This means that carbon dioxide is made up of

Back

Two oxygen atoms and one carbon atom

Front

What is the "3" in front of "3CO₂" called?

Back

coefficient

Front

What does "3" in front of "3CO₂" stand for?

Back

there are three CO₂ molecules

Front

What is the little “2” called in CO₂?

Back

subscript

Front

What does the little “2” mean in CO₂?

Back

there are two oxygen atoms in a CO₂ molecule

Front

The force that holds atoms together in a substance is called a ___.

Back

chemical bond

Front

What happens to an atom when its outer energy level is completely filled with electrons?

Back

it become stable

Front

A chemical change is different than a physical change because in a chemical change

Back

A new substance is formed and in a physical change no new substance is formed.

Front

Popping a balloon is an example of a ____?

Back

physical change