Kemi - Kemisk förening (3) ENG

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Across
  1. 4. What makes acids corrosive and acidic?
  2. 6. There are different kinds of this. All are used to measure the pH value of a solution, e.g. bath water.
  3. 9. What makes bases corrosive and basic?
  4. 15. The name of an ion that is + charged
  5. 17. A substance that has a high proportion of hydroxide ions and a high pH value.
  6. 18. Element H
  7. 19. Element Mn
  8. 21. Element B
  9. 22. A solution that is neither acidic nor basic.
  10. 23. A scale that describes whether a substance is acidic or basic.
  11. 24. Called the bond between positive and negative ions in an ionic compound.
  12. 25. A chemical compound in which at least two atoms are joined together, can be different or the same elements.
  13. 26. Element N
Down
  1. 1. Is like an atom but lacks or has more electrons. Has a negative or positive charge.
  2. 2. Element Fe
  3. 3. Rows in the periodic table.
  4. 5. Element C
  5. 7. A substance that has a high proportion of hydrogen ions and a low pH value.
  6. 8. Truth or false. A pH value of 7 is considered neutral. Water is an example of such a substance.
  7. 10. A chemical compound formed when negative and positive ions are attracted to each other.
  8. 11. Columns in the periodic table.
  9. 12. Different types of atoms are combined in a compound and form e.g. water
  10. 13. When a substance reacts with another substance and forms new properties, form and character.
  11. 14. Element Li
  12. 16. The name of an ion with - charged
  13. 20. Truth or false. A base can be as dangerous and corrosive as an acid.