Anything that takes up space.

The smallest unit of a chemical element.

Each element is made of only one kind of atom.
There are about 120 elements.

A list of all chemical elements that exist in the universe.

Formed when two or more atoms join together.

Formed when two or more different atoms join together.

Subscripts tell you how many “atoms” of each element for that molecule

Multiply the number of molecule your making

The process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water

Cellular respiration is a set of metabolic reactions and processes that take place in the cells or organisms to convert chemical energy from oxygen molecules or nutrients into adenosine triphophate (ATP), and then release waste products.