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