Elements

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Across
  1. 4. orange diamond
  2. 7. Br
  3. 8. hazardous household products symbols
  4. 10. luster
  5. 11. may cause life threatening effects even in small amounts and with short exposure
  6. 15. able to dissolve into another
  7. 19. made up of only one type of atom
  8. 20. often a liquid or gas at room temperature
  9. 21. shapes and______indicate how dangerous a substance is
  10. 23. yellow triangle
  11. 24. all compounds have a name and a _____
Down
  1. 1. amount of mass in a given volume
  2. 2. red octagon
  3. 3. most reactive non-metals
  4. 5. solids at room temperature
  5. 6. physical and ______ changes
  6. 9. can be between metals and non metals
  7. 12. may cause skin burns and permanent eye damage
  8. 13. can burn without air or can intensely combustible material
  9. 14. mixtures that can be separated
  10. 16. H2O
  11. 17. mass number minus atomic number
  12. 18. chemical combination of two or more elements in a specific ratio
  13. 22. made up of two or more substances and can be separated
  14. 23. mixtures that cannot be separated