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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 28 · 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.

NameDateTime takenScore ___ / 40
  1. 1.🔍 Which is the odd one out? (a) baking soda (b) sugar (c) glucose powder (d) sand
  2. 2.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
  3. 3.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) sunny or shady place (b) days to see crystals (c) the amount of salt (d) the kind of salt
  4. 4.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) salt grows roots (c) the dish melts (d) water evaporates
  5. 5.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) folding paper (c) melting butter (d) browning lemon ink
  6. 6.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
  7. 7.🧂 Which of these dissolves in water? (a) cooking oil (b) sand (c) chalk powder (d) food colour
  8. 8.True or false: chalk powder does not dissolve in water. (a) False (b) True
  9. 9.True or false: cooking an egg is a change that cannot be undone. (a) True (b) False
  10. 10.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) days to see crystals (b) sunny or shady place (c) the same dish
  11. 11.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a balloon (c) turmeric powder (d) a spoon
  12. 12.True or false: melting butter is a change that cannot be undone. (a) True (b) False
  13. 13.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
  14. 14.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is kept the same. (a) True (b) False
  15. 15.🔍 Which is the odd one out? (a) table salt (b) cooking oil (c) food colour (d) baking soda
  16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) a shallow dish (d) a magnet
  17. 17.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) browning lemon ink (c) rusting iron (d) freezing water
  18. 18.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a battery cell (c) a magnet (d) a piece of string
  19. 19.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
  20. 20.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) freezing water (c) melting ice (d) baking a cake
  21. 21.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
  22. 22.True or false: baking a cake is a change that can be undone. (a) False (b) True
  23. 23.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
  24. 24.True or false: glucose powder dissolves in water. (a) True (b) False
  25. 25.⚖️ 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 change it (b) we keep it the same (c) we measure it
  26. 26.🔍 Which is the odd one out? (a) sugar (b) chalk powder (c) baking soda (d) table salt
  27. 27.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) it turns to oil (c) salt crystals form (d) sugar crystals form
  28. 28.🧈 Which of these is a change that can be undone? (a) rusting iron (b) cooking an egg (c) dissolving salt (d) baking a cake
  29. 29.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
  30. 30.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
  31. 31.🔍 Which is the odd one out? (a) cooking oil (b) sand (c) chalk powder (d) food colour
  32. 32.True or false: a balloon is not needed for growing salt crystals. (a) False (b) True
  33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) True (b) False
  34. 34.True or false: baking soda dissolves in water. (a) True (b) False
  35. 35.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) warm water (c) a mirror (d) a shallow dish
  36. 36.🧂 Which of these dissolves in water? (a) table salt (b) chalk powder (c) sawdust (d) small pebbles
  37. 37.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it turns sweet (c) it fizzes (d) few or no crystals
  38. 38.⚖️ 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 measure it (b) we keep it the same (c) we change it
  39. 39.🧂 Which of these does not dissolve in water? (a) table salt (b) sand (c) food colour (d) sugar
  40. 40.True or false: cooking an egg is a change that can be undone. (a) True (b) False

Answer key

  1. sand
  2. can be undone
  3. sunny or shady place
  4. water evaporates
  5. browning lemon ink
  6. not needed
  7. food colour
  8. True
  9. True
  10. the same dish
  11. a spoon
  12. False
  13. does not dissolve
  14. False
  15. cooking oil
  16. a magnet
  17. freezing water
  18. a piece of string
  19. dissolves in water
  20. baking a cake
  21. cannot be undone
  22. False
  23. not needed
  24. True
  25. we keep it the same
  26. chalk powder
  27. sugar crystals form
  28. dissolving salt
  29. can be undone
  30. needed
  31. food colour
  32. True
  33. True
  34. True
  35. a mirror
  36. table salt
  37. few or no crystals
  38. we keep it the same
  39. sand
  40. False

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