year 10 mock MAD time

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Across
  1. 3. used to test for sugars
  2. 4. the variable that is changed in an investigation
  3. 5. bonding where electrons are transferred
  4. 10. the location of the pacemaker in the heart
  5. 11. the term to describe the loss of water by evaporation through the stomata
  6. 14. this vessel brings deoxygenated blood back into the right atrium
  7. 17. the colour of strong acids in Universal indicator
  8. 19. the enzyme that digests starch
  9. 20. the way early scientists organised the periodic table
  10. 21. the gas needed for aerobic respiration
  11. 22. the colour of strong alkalis in universal indicator
  12. 23. used to test for starch
Down
  1. 1. bonding where electrons are shared
  2. 2. this acid has this formula HCL
  3. 6. this acid has this formula HNO3
  4. 7. Mendeleev left these to help sort out problems in the periodic table in the early development stages
  5. 8. this meaning o this state symbol (aq)
  6. 9. how the particles in a gas move
  7. 12. these polymers are made up of amino acids
  8. 13. the mineral needed by plants to make amino acids
  9. 15. the types of vessels that carry blood away form the heart
  10. 16. the type of transport that needs energy and moves molecules from low to high concentrations
  11. 18. reactions that give out heat energy