| A | B |
|---|
| Chemical bonds | The attraction between atoms that allows for the formation of compounds. |
| Ionic bonds | chemical bonds formed when electrons are transferred from one atom to another. |
| Covalent bonds | chemical bonds formed when electrons are shared between atoms. |
| Periodic table of elements | Display of 118 elements that share similar characteristics. |
| Group | A vertical column of elements on the periodic table that share similar characteristics. |
| Period | Horizontal row on the periodic table. |
| Alkali metals | Group 1 on the periodic table. The most reactive metals on the table. |
| Alkaline earth metals | Group 2 on the periodic table. The 2nd most reactive metals. |
| Transition metals | Metals in groups 3-12 on the periodic table. |
| Metalloids | The elements located along the "staircase" on the periodic table. Also called semimetals. |
| Halogens | Group 17 on the periodic table. The most reactive non-metals on the table. |
| Noble gases | Group 18 on the periodic table. The elements are unreactive/inert gases that rarely combine with other elements. |
| Malleable | A property of metals, means able to be hammered into shapes. |
| Ductile | A property of metals, means being able to be drawn into wires. |
| Luster | Property of metals, means shiny. |
| Inert | Unreactive |
