| A | B |
|---|
| halogens | usually forms salts |
| alkali | never found free in nature |
| alkaline earth metals | Magnesium, Calcium |
| transition metals | usually bright in color |
| staircase | separates non-metals and metals |
| metalloids | has properties of metals and non-metals |
| metals | conduct heat very well |
| non-metals | poor conductors of heat and electricity |
| noble gases | Neon, Argon |
| inert | inactive |
| malleable | able to be hammered into thin wires |
| atomic number | number of protons |
| atomic mass | number of protons and neutrons |
| period | horizontal row of elements |
| columns | similar properties in elements |
| isotopes | atoms of same element with same numbers of protons, but different numbers of neutrons |
| Carbon Family | has 4 valence electrons |
| subscripts | number in lower righthand side of element in a compound |
| coefficient | number preceding the element in a compound |
| chemical equation | shows the elements and compounds involved in a chemical reaction |
