Unit 2 Vocabulary

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Across
  1. 2. - a protein molecule that regulates chemical reactions in living things
  2. 4. - when something like metal or stone is broken down overtime
  3. 6. - uncharged particle
  4. 9. - passing an electric current through a chemical compound to decompose it
  5. 10. - negatively charged particle
  6. 11. - positively charged particle
  7. 12. - a substance that burns and causes damage to tissue that is living
  8. 14. - a chemical reaction where heat is released into the surroundings
  9. 16. - the substances that go into a chemical reaction
Down
  1. 1. - made up of two or more elements but is still a pure substance
  2. 3. - a close cluster of atoms
  3. 4. - a chemical reactions where a substance reacts rapidly with oxygen and gives off heat
  4. 5. - substance that slows down a chemical reactions or stops it
  5. 7. - made of on type of particle and is a pure substance
  6. 8. - in a chemical reaction, a substance that speeds up the process without the substance being used up
  7. 11. Change - a change happens but no new substance is produced
  8. 12. - the study of properties and matter and how it changes
  9. 13. Change - a change happens and a new chemical substance is formed
  10. 15. - a chemical reaction where heat is taken from the surroundings
  11. 16. - a product of the chemical reaction of iron, oxygen, and moisture