Across
- 1. what side of the periodic table are the metals placed?
- 3. a chemical reaction that takes in energy.
- 7. what are the horizontal rows in the periodic table called?
- 8. what is the name of the process for a liquid changing to a gas?
- 10. The minimum amount of energy particles need to react.
- 12. elements in the same group are similar because they have the same number of outer ---------?
- 13. how many elements are liquid state at room temperature?
- 14. a solution that wont dissolve any more solute at that temperature.
Down
- 2. the name given when a chemical reaction gives off gas.
- 4. what do the elements gain as you descend the groups?
- 5. what is the name given when an enzyme is destroyed by high temperatures.
- 6. What has taken place when a change of state occurs?
- 9. a firework display is an example of what kind of reaction?
- 11. What is the name of the first group of elements?