Science wk.10

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Across
  1. 2. The product of carbon + oxygen
  2. 4. CH₄ is the chemical formula for?
  3. 6. The gas essential for combustion
  4. 8. The vertical columns on the periodic table
  5. 11. Combustion reactions always release this
  6. 14. This element is a liquid metal at room temp
  7. 15. Metal + Oxygen → ?
  8. 17. Group 18 elements are called?
  9. 18. Rusting metal is an example of this reaction
  10. 19. The state symbol (g) stands for?
  11. 20. The process that forms rust on iron
  12. 21. Fuel + oxygen → ? + heat
  13. 22. The element with symbol "Mg"
Down
  1. 1. What type of reaction is burning?
  2. 3. What compound forms when hydrogen burns in oxygen?
  3. 5. The atomic number of Magnesium
  4. 7. A non-metal + oxygen gives this
  5. 9. The element with atomic number 6
  6. 10. Periodic Table: What is element 8?
  7. 11. The formula for water
  8. 12. Group 1 elements are called?
  9. 13. The row number in the periodic table is called a?
  10. 15. Shiny, conductive elements on the left side of the periodic table
  11. 16. The element with symbol "Fe"