Crossword Unit B Enzo & Audrey

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Across
  1. 2. a new substance produced in a chemical reaction between reactants
  2. 6. Most reactive especially in air and water
  3. 11. A substance that can be pounded or rolled into sheets
  4. 16. Are characteristics that can be used to describe a substance
  5. 17. Examples include reaction with acids, ability to burn and reaction with air
  6. 20. is a chemical reaction that takes place in the cells in your body.
  7. 22. Often liquid or gas at room temperature, not shiny, are not ductile or malleable
  8. 23. a substance that reacts with another substance or in a chemical reaction to create a new substance with different properties or products
  9. 24. Can be in between metals and non metals
  10. 25. Gas turning into a solid is called _______
Down
  1. 1. The most stable and unreactive
  2. 3. Any solid that can be stretched into a long wire
  3. 4. an atom or a group of atoms that has become electrically charged because it has lost or gained electrons.
  4. 5. a change in colour, odour, formation of a solid or a gas and release or absorption of energy (heat)
  5. 7. React to air and water, less reactive than alkali metals
  6. 8. when non-metals combine, they produce a pure substance
  7. 9. is a chemical reaction that occurs when oxygen reacts with a substance to form a new substance and gives off energy
  8. 10. Examples include melting and freezing
  9. 12. The average mass of an element in atomic mass units (amu)
  10. 13. is a slow chemical change that occurs when oxygen in the air reacts with a metal.
  11. 14. takes place when two or more substances combine to form new substances
  12. 15. Examples include colour and lustre
  13. 18. Most reactive non metals
  14. 19. Solid at room temperature, malleable, have conductivity
  15. 21. Pure substances formed as a result of the attraction between particles of opposite charges called ions