Across
- 2. new material produced by the reaction
- 4. The Workplace Hazardous Materials Information System
- 7. gases group 18 element
- 8. substances that help a reaction proceed faster
- 9. a chemical reaction that takes place in the cells in your body
- 11. negatively charged particle of an atom
- 13. takes place when two or more substances combine to form new substances.
- 14. formed with one metal and one non-metal
- 17. material at the start of a reaction
- 20. formed with two non-metals
- 22. gas to liquid
- 23. horizontal row of the periodic table
Down
- 1. gas to solid
- 3. the total mass of the reactants and the total mass of the products are equal
- 5. have both metallic and non-metallic properties
- 6. solid to gas
- 10. positively charged particle of an atom
- 12. vertical column of the periodic table(also called a family)
- 13. a chemical reaction that occurs when oxygen reacts with a substance to from a new substances and give off energy
- 15. neutral particle of an atom
- 16. group 17 element
- 18. group 1 element
- 19. liquid to gas(vaporization)
- 21. the basic unit of a chemical element.
- 22. slow chemical change that occurs when oxygen in the air reacts with a metal