SCIENCE VOCAB

MATTER

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

ATOM

• The smallest unit of a chemical element

ELEMENT

• Each element is made of only one type of atom
• There’s are about 120 elements
• Ex: Hydrogen, oxygen, carbon, nitrogen, gold, etc.

PERIODIC TABLE

• A list of every single discovered element in the universe.
• Categorizes, and organizes elements according to the properties of their atoms.

MOLECULE

• Created when 2 or more atoms join together.
• They can be two different atoms or two of the same atoms.

COMPOUND

• Created when 2 or more DIFFERENT atoms join together.
• All compounds are also atoms, but not all atoms are compounds.

SUBSCRIPTS

• They tell you how many atoms of each element in that molecule.
• Ex: H2= 2 hydrogen molecules.
• Ex: H2O= 2 hydrogen and 1 oxygen.

COEFFICIENTS

• They multiply the number of molecules you are making.
• 2 H2 O= 4 hydrogen atoms, 2 oxygen atoms.