| A | B |
|---|
| Compound | matter made up of two or more elements that HAVE chemically bonded together |
| Valance Electron | electrong in the outer most energy level of an atom |
| Atom Mass | number of protons and neutrons in the nucleus of an atom |
| Atomic Number | number of protons in the nucleus of an atom |
| Atom | smallest particle into which an element can be divided and still have the properties of that element |
| Heterogeneous | matter that has DIFFERENT consistencies throughout the substance |
| Homogeneous | matter that has the SAME consistency throughout the substance |
| Mixture | a combination of two or more substances that HAVE NOT combined chemically |
| Molecule | smallest particle of a stubstance that still has the properties of that substance |
| Element | substances that are the building blocks of matter |
