Chemistry Crossword

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Across
  1. 3. An atom or a group of atoms
  2. 5. Occurs when oxygen reacts with a substance to form a new substance and gives off energy
  3. 7. Substance Made of only one kind of matter
  4. 9. Solid to liquid
  5. 11. Have lustre,conduct electricity and have ductility
  6. 13. The numerical prefix of four
  7. 14. The ability of a substance to conduct electricity or heat
  8. 16. The numerical prefix of five
  9. 18. A material that cannot break down into any simpler substance
  10. 21. Have a high melting point
  11. 22. Pure substances formed as a result of the attraction between particles of opposite changes
  12. 23. An element is defined by the number of protons it has
  13. 24. The numerical prefix of one
  14. 25. Not shiny,dont conduct electricity and not ductile
Down
  1. 1. The amount of mass in a given volume of a substance
  2. 2. A combination of two or more pure substance
  3. 4. The ability of a substance to be dissolved in another
  4. 6. Workplace Hazardous Material information system
  5. 8. The average mass of an element
  6. 10. Takes place when two or more substances combine to form new substances.
  7. 12. Can be in between metals and non-metals
  8. 15. The numerical prefix of two
  9. 17. change Occcurs when two or more materials react and create new materials. The
  10. 19. The numerical prefix of three
  11. 20. Liquid to solid