Across
- 2. liquid,solid,gas are all _____'s of matter
- 4. neutral particle in the nucleus of an atom
- 5. positively charged particle in the nucleus of an atom
- 7. substance reacts with another substance or substances in a chemical to create new substances with different properties
- 9. pure substance formed when at least one metal and one non-metal combine
- 10. pure substance that can't be broken down into other substances
- 11. chemical combination of two or more elements in a specific ratio
- 14. number of protons in the nucleus of one atom of an element
- 17. horizontal row of elements in the periodic table
- 19. an experiment in which all reactants and all products are accounted for
- 20. mass of one atom of an element calculated from the total protons
- 22. the first name of a man who experimented with the behavior of gases in the 1660's
- 23. invisible negatively charged particle that orbits the nucleus of an atom
- 25. a chemical reaction that releases energy
Down
- 1. vertical column of elements in the periodic table
- 3. a chemical reaction that absorbs energy
- 6. slow chemical change that ocurs when oxygen in the air reacts with a metal
- 8. pure substance formed when non-metals combine
- 12. ability of a system to conduct electricity or heat
- 13. what a chemical is made of ex 1 atom of ... and 1 atom of ...
- 15. an experiment in which one or more products of a chemical reaction can escape
- 16. atoms that have become electrically charged because of loss or gained electrons
- 18. anything that has mass and occupies space
- 21. how an element looks
- 24. Workplace Hazardus Materials Information System