Each element is made of only one kind of atom.
There are about 120 elements
Examples:
aluminum (Al)
gold (Au)
calcium (Ca)

Anything that takes up space and has mass
All matter is made of atoms

The smallest unit of a chemical element.

Each element is made of only one kind of atom.
There are about 120 elements
Examples:
aluminum (Al)
gold (Au)
calcium (Ca)

alist of all of the chemical elements that exist in the universe (that have been discovered by humans so far)
Categorizes, organizes elements according to the properties of their atoms

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

tell you how many “atoms” of each element for that molecule
Example: H2 = 2 atoms hydrogen
Examples: H2O = 2 atoms hydrogen, 1 atom oxygen

multiply the number of molecules you are making!

2 H2O = 4 atoms hydrogen, 2 atoms oxygen

is the process by which plants make their own food.

The process by which the cells of ALL LIVING THINGS break apart glucose to release energy