Anything that takes up space and have mass

Made of atoms

The smallest unit of a chemical element

Each element is made of one kind of atom

There are about 120 examples

Organize the elements on to a table or chart

Formed when 2 or more atoms join together.
These may be 2 of the same atom or 2 different atoms.

Formed when 2 or more DIFFERENT atoms are joined together.
Note: All compounds are also molecules, but not all molecules are compounds.
Examples of Compounds: CO2 NaCl H2O2
Non Examples - Not compounds: O2 H2
Why aren’t these compounds?

a numerical or constant quantity placed before and multiplying the variable in an algebraic expression

(of a letter, figure, or symbol) written or printed below the line.
noun

the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.

Cellular respiration is the process through which cells convert sugars into energy. To create ATP and other forms of energy to power cellular reactions, cells require fuel and an electron acceptor which drives the chemical process of turning energy into a useable form