Kemi - Kemiska förening (4) ENG

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Across
  1. 1. Element Fe
  2. 4. Element Li
  3. 7. Rows in the periodic table.
  4. 10. Different types of atoms are combined in a compound and form e.g. water
  5. 11. A solution that is neither acidic nor basic.
  6. 13. Element N
  7. 14. Strong acidic substance. Chemical formula HCl.
  8. 17. Element B
  9. 18. A substance made up of positive and negative ions.
  10. 20. What makes acids corrosive and acidic?
  11. 22. What makes bases corrosive and basic?
  12. 23. Is like an atom but lacks or has more electrons. Has a negative or positive charge.
  13. 24. Element Mn
Down
  1. 1. A chemical compound formed when negative and positive ions are attracted to each other.
  2. 2. Element O
  3. 3. When a substance reacts with another substance and forms new properties, form and character.
  4. 5. There are different kinds of this. All are used to measure the pH value of a solution, e.g. bath water.
  5. 6. A chemical compound in which at least two atoms are joined together, can be different or the same elements.
  6. 7. scale A scale that describes whether a substance is acidic or basic.
  7. 8. Element Ne
  8. 9. Columns in the periodic table.
  9. 12. A substance that has a high proportion of hydroxide ions and a high pH value.
  10. 13. Element C
  11. 15. Element Al
  12. 16. Element Cl
  13. 19. Strong basic substance. Chemical formula NH4.
  14. 21. A substance that has a high proportion of hydrogen ions and a low pH value.