Across
- 2. this occupies the left side and middle of the periodic table
- 4. most commonly used in electrical wiring
- 5. a metal that can be found naturally in a pure state and takes up most of the periodic table
- 6. these have a dull appearance, do not conduct electricity well and are brittle
- 7. these hardly ever form compounds with other elements
- 9. elements with similar chemical properties
Down
- 1. the small numbers in the top right corner of each element represent the number of electrons in each energy shell
- 3. small number(s) on the right side of the element
- 6. a gas that emits colored light when electricity passes through it, such as lighted signs
- 8. is commonly used in fertilizers, insecticides, and gunpowder