| A | B |
|---|
| Ion | An atom or group of atoms that has become electricly charged |
| Ionic Bond | An attraction between two oppositely charged ions |
| Polyatomic Ion | A group of atoms that react as one |
| Crystal | Ions that form in an orderly, three dimensional arrangement |
| Covalent Bonds | A chemical bond formed when two atoms share electrons |
| Double Bond | A chemical bond that forms a double bond with each oxygen atom |
| Molecular Compound | A chemical bond that consists of molecules having covalently bonded atoms |
| Polar | A covalent bond in which electrons are shared unequally |
| Nonpolar | Valence electrons are shared equally and the bond |
| Minerals | Have characteristic properties such as hardness ,density, color, crystal, shape, and the way the crystal breaks (cleavage) |
| Mineral | Naturally occurring solid that has a crystal structure and a definite chemical composition |
| The stronger the chemical bond in a mineral crystal | The harder the crystal is |
| In covalent bonds | Pairs of electrons are shared between atoms |
| In polar covalent bonds | The shared electrons are attracted more to one atom than the other |
| When atoms lose or gain electrons | They become positively or negatively charged |
| Properties of an ionic cimpound | Crystal shape, high melting point, and electrical conductivity |
