Chemical Science Y10 SBAB Xword

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Across
  1. 1. a methane (CH4) molecule has 3 _____ atoms
  2. 3. most reactive metal in the metal activity series
  3. 5. a chemical ______ is a written expression of a chemical reaction
  4. 9. where electrons are usually located
  5. 11. elements that are too cool to react
  6. 12. during a chemical reaction, ______ break and reform
  7. 14. a metal reacting with an ____ will produce hydrogen gas and a salt
  8. 15. Cu is ____ reactive than Mg
  9. 16. the metal in table salt
Down
  1. 2. the rule that requires 8 electrons in the outer shell of an atom
  2. 4. Group ___ elements have 2 electrons on the outer shell
  3. 6. common name for Group 1 elements
  4. 7. contain two or more atoms bonded together
  5. 8. the law of _________ of mass states that matter cannot be destroyed nor created
  6. 10. chemical _______ must always be balanced
  7. 13. least reactive metal in the metal activity series