| A | B |
|---|
| atoms | the smallest particle of matter |
| protons | have a positive charge |
| neutrons | have no charge |
| electrons | have a negative charge |
| atomic number | number of protons |
| atomic mass | protons + neutrons |
| Periodic table | chart of elements |
| element | atoms of all one kind |
| isotopes | atoms with same number of protons and different number of neutrons |
| compounds | 2 or more different kinds of atoms bonded together |
| bonds | form between atoms when electrons are shared or transfered |
| covalent bond | strong bond where 2 atoms share electrons |
| ionic bond | the attraction between a positive ion and a negative ion |
| metallic bond | metal ions sharing electrons |
| James Bond | 007 |
| minerals | inorganic crystalline material rocks are made of |
| crystal form | visible expression of the minerals arrangement of atoms |
| cleavage | the tendency to break along planes |
| hardness | a minerals ability to sctatch and be scratched |
| density | weight per volume |
| luster | how light is reflected from the surface |
| Mohs Scale | measure of hardness |
| shell | region where electrons are located |
| Silicate | most common group of minerals |
