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The Periodic Table
| Question | Answer |
|---|---|
| C | Carbon |
| O | Oxygen |
| H | Hydrogen |
| Na | Sodium |
| Cl | Chlorine |
| Vertical rows going downward | Groups |
| Horizontal rows going across | Periods |
| Group 1 | Alkali metals |
| Group 2 | Alkaline earth metals |
| Group 7 | Halogens |
| Group 8 | The Noble Gasses |
| What is an Element | Only one type of atom |
| What is an Atom | The smallest particle an element can be made of |
| What is a Compound | A mixture of elements that are chemically combined |