Y9 End of Semester 2 revision crossword

Edit Answers
123456789101112131415161718192021
Across
  1. 1. A condition in which your airways narrow and swell and may produce extra mucus.
  2. 4. Scientific word for "free" electrons that metals have.
  3. 6. Molecules that consist of two identical atoms.
  4. 7. Number of protons + number of neutrons = 197.
  5. 9. Primary muscle used in breathing.
  6. 12. (TwoWords) The periodic table group that doesn't react at all.
  7. 13. Two identical alleles of a particular gene.
  8. 17. A reaction that happens when two molecules combine.
  9. 18. (TwoWords) The join between non-metals and non-metals atoms.
  10. 19. Contains the genetic code for a person.
  11. 21. Allow for the exchange of gases between the outside air and the interconnecting air canals within the leaf.
Down
  1. 2. (TwoWords) The alveoli have a ___ ____ that speeds up diffusion, allows gases to dissolve faster.
  2. 3. Protective layer near the outside of a leaf. (Like skin).
  3. 5. (TwoWords) AB + CD => AD + CB.
  4. 8. A type of reaction which includes a reaction with oxygen.
  5. 10. Group 5 period 3.
  6. 11. (TwoWords) The group of elements which become a 1+ cation.
  7. 14. (TwoWords) Breathe heavily after exercise because your muscles have an ____ ____.
  8. 15. 6.022x10^23 atoms of a substance
  9. 16. (TwoWords) A type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound.
  10. 20. (Abbreviation) The ambient conditions under which a mole of gas will take up 24 dm^3.