Chemicals in the environment

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Across
  1. 6. A substance made from two or more elements joined together.
  2. 10. The smallest part of an element.
  3. 11. Letters and numbers that show the parts of a substance.
  4. 12. A feature of a substance that can be observed without changing it.
  5. 13. Matter that takes the shape of its container.
  6. 14. Anything that has mass and takes up space.
  7. 16. Facts or observations used to support an idea.
  8. 17. A change where no new substance is made.
  9. 21. Matter with a fixed shape and size.
  10. 23. How thick or runny a liquid is.
  11. 24. substance Matter made of only one type of particle.
  12. 25. A short form used to represent an element.
  13. 27. A substance with a low pH that can react with metals.
  14. 28. A pure substance made of one kind of atom.
Down
  1. 1. The slow wearing away of metal by chemical reactions.
  2. 2. Two or more atoms joined together.
  3. 3. An element that does not have metal properties.
  4. 4. chemical reaction where a substance reacts with oxygen and releases energy
  5. 5. A substance that changes colour to show pH.
  6. 7. An element that is shiny and conducts heat and electricity.
  7. 8. The ability to carry electricity or heat.
  8. 9. A starting substance in a chemical reaction.
  9. 12. Chemical ____________ :How a substance behaves during a chemical change.
  10. 15. scale A scale that measures how acidic or basic something is.
  11. 18. The substance that does the dissolving.
  12. 19. Matter that spreads out to fill a space.
  13. 20. The amount of matter in an object.
  14. 22. A mixture where one substance dissolves in another.
  15. 25. The substance that dissolves.
  16. 26. A substance with a high pH.