| A | B |
|---|
| family or group | elements in a column that have similar properties |
| period | elements in a row or that go across and do not have the same properties |
| metals | group of periodic table that has the most elements |
| Alkali Metals | name of group 1 |
| reactive, shiny, soft | properties of group 1 |
| Alkaline Earth Metals | family name of group 2 elements |
| They lose 2 electrons | how group 2 elements react |
| transition metals | family name for groups 3-12 |
| 8 | greatest number of valence electons an atom can have |
| Nitrogen family | name for group 15 |
| alkali metals | name of family likely to react violently with water |
| Halogens | name for group 17 |
| Noble Gases | name for group 18 |
| Halogens | name of family that typically gains or shares one electron when it reacts with other elements |
| Noble Gases | family of elements that do not usually gain, lose, or share electrons, resulting in usually being unreactive |
| Metalloids | group of elements that has the characteristics of both metals and non-metals |
| 2 | Number of electron in the first outer most layer of an electron |
| 8 | number of electrons in the 2nd outer most layer of an electron |
| same as atomic number | How can you find out the number of protons in an atom using the periodic table. |
| atomic mass - atomic number | how can you find the number of neutrons in an atom |
| group 1 | where most reactive metals are found |
| transition metals | family of elements known for being used to make colorful compounds of paint |
| valence electrons | elements in a family all have the same number of what |
