Across
- 3. negative charge
- 5. how heavy the atom is
- 6. The order of the element in the Periodic table
- 7. a particle that is electrically charged negative postive
- 8. group number 18 on the periodic table
- 10. A Table of the elements organized by number
- 11. Substance that accelerates a chemical reaction
- 12. Signs that appear on Hazardous Materials
- 14. Absorbing energy (heat)
- 15. the positively charged central core of an atom
- 16. Degradation Of a material Over time
- 19. When one metal and one non metal combine to make a new subbsantce
- 22. Substances that make products
- 23. group number 17 on the periodic table
- 24. the most reactive metal
Down
- 1. Chemical process in which a substance reacts rapidly with oxygen and give off heat
- 2. in a Chemical Reaction the mass of the reactants and will stay the same
- 4. when some of the reactants/products can escape
- 6. the basic unit of a chemical element
- 9. Natural Catalyst in your saliva
- 13. when a metal and a nonmetal combine
- 17. When none of the reactants/products can escape an experiment
- 18. positive charge
- 20. Created by reactants
- 21. Elementary particle with no charge