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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 220 · 40 questions
TalentJR

What you do (Dry out, crystals in): 1. An adult pours warm water into a cup. 2. Stir in salt, a spoon at a time, until no more dissolves. 3. Pour the salty water into a shallow dish and lay a string in it. 4. Leave it on a sunny windowsill, out of reach of small children, and check each day.

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  1. 1.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is what we measure. (a) True (b) False
  2. 2.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we keep it the same (b) we measure it (c) we change it
  3. 3.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) melting butter (c) folding paper (d) cooking an egg
  4. 4.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a shallow dish (d) a mirror
  5. 5.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
  6. 6.True or false: browning lemon ink is a change that can be undone. (a) False (b) True
  7. 7.🧂 Which of these does not dissolve in water? (a) cooking oil (b) sugar (c) table salt (d) baking soda
  8. 8.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) yeast (c) a mirror (d) warm water
  9. 9.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a balloon (c) a mirror (d) a spoon
  10. 10.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
  11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is what we measure. (a) False (b) True
  12. 12.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
  13. 13.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) a shallow dish (d) a magnet
  14. 14.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
  15. 15.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) a battery cell (d) warm water
  16. 16.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we keep it the same (b) we change it (c) we measure it
  17. 17.🔍 Which is the odd one out? (a) food colour (b) sand (c) cooking oil (d) sawdust
  18. 18.True or false: a battery cell is not needed for growing salt crystals. (a) True (b) False
  19. 19.🧂 Which of these dissolves in water? (a) table salt (b) cooking oil (c) small pebbles (d) sawdust
  20. 20.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
  21. 21.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) browning lemon ink (c) melting ice (d) freezing water
  22. 22.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) safe from small children (c) in a busy doorway (d) on the edge of a table
  23. 23.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we measure it (b) we change it (c) we keep it the same
  24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) turmeric powder (c) salt (d) a piece of string
  25. 25.True or false: glucose powder dissolves in water. (a) False (b) True
  26. 26.True or false: baking soda dissolves in water. (a) False (b) True
  27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) yeast (c) a piece of string (d) warm water
  28. 28.🔍 Which is the odd one out? (a) sand (b) chalk powder (c) cooking oil (d) sugar
  29. 29.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) no crystals (c) liquid crystals (d) smaller crystals
  30. 30.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) rusting iron (c) milk turning to curd (d) melting ice
  31. 31.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
  32. 32.True or false: a balloon is not needed for growing salt crystals. (a) False (b) True
  33. 33.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
  34. 34.True or false: milk turning to curd is a change that can be undone. (a) False (b) True
  35. 35.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
  36. 36.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) yeast (c) a spoon (d) warm water
  37. 37.True or false: melting ice is a change that can be undone. (a) False (b) True
  38. 38.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
  39. 39.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
  40. 40.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) salt (c) a magnet (d) turmeric powder

Answer key

  1. False
  2. we measure it
  3. cooking an egg
  4. a mirror
  5. dissolves in water
  6. False
  7. cooking oil
  8. warm water
  9. a spoon
  10. can be undone
  11. False
  12. needed
  13. a magnet
  14. can be undone
  15. a battery cell
  16. we keep it the same
  17. food colour
  18. True
  19. table salt
  20. False
  21. browning lemon ink
  22. safe from small children
  23. we keep it the same
  24. turmeric powder
  25. True
  26. True
  27. yeast
  28. sugar
  29. bigger crystals
  30. melting ice
  31. does not dissolve
  32. True
  33. cannot be undone
  34. False
  35. not needed
  36. yeast
  37. True
  38. not needed
  39. needed
  40. salt

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