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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 534 · 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.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) salt (c) a piece of string (d) warm water
  2. 2.True or false: browning lemon ink is a change that can be undone. (a) True (b) False
  3. 3.🔍 Which is the odd one out? (a) food colour (b) cooking oil (c) sugar (d) glucose powder
  4. 4.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) salt crystals form (c) it turns to oil (d) sugar crystals form
  5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) salt (c) warm water (d) a magnet
  6. 6.🧂 Which of these dissolves in water? (a) small pebbles (b) sawdust (c) baking soda (d) cooking oil
  7. 7.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
  8. 8.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a mirror (c) a spoon (d) a balloon
  9. 9.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the same dish (b) the amount of salt (c) days to see crystals (d) the amount of water
  10. 10.🧂 Which of these dissolves in water? (a) chalk powder (b) sawdust (c) glucose powder (d) cooking oil
  11. 11.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
  12. 12.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) freezing water (c) cooking an egg (d) dissolving salt
  13. 13.True or false: chalk powder does not dissolve in water. (a) True (b) False
  14. 14.🔍 Which is the odd one out? (a) sugar (b) small pebbles (c) chalk powder (d) sawdust
  15. 15.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is what we measure. (a) False (b) True
  16. 16.🧂 Which of these does not dissolve in water? (a) glucose powder (b) sugar (c) food colour (d) chalk powder
  17. 17.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) salt eats water (c) water evaporates (d) the dish melts
  18. 18.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
  19. 19.True or false: dissolving salt is a change that cannot be undone. (a) False (b) True
  20. 20.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) turmeric powder (c) salt (d) a piece of string
  21. 21.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a mirror (c) turmeric powder (d) a piece of string
  22. 22.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
  23. 23.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a mirror (c) warm water (d) turmeric powder
  24. 24.🔍 Which is the odd one out? (a) cooking oil (b) sand (c) sawdust (d) food colour
  25. 25.True or false: rusting iron is a change that cannot be undone. (a) False (b) True
  26. 26.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
  27. 27.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
  28. 28.True or false: sand dissolves in water. (a) False (b) True
  29. 29.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) bigger crystals (c) liquid crystals (d) smaller crystals
  30. 30.🔍 Which is the odd one out? (a) cooking oil (b) sand (c) table salt (d) small pebbles
  31. 31.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) folding paper (c) rusting iron (d) melting butter
  32. 32.True or false: yeast is needed for growing salt crystals. (a) True (b) False
  33. 33.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
  34. 34.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we keep it the same (b) we change it (c) we measure it
  35. 35.🧂 Which of these does not dissolve in water? (a) food colour (b) glucose powder (c) sawdust (d) sugar
  36. 36.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
  37. 37.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) rusting iron (c) cooking an egg (d) freezing water
  38. 38.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
  39. 39.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
  40. 40.🔍 Which is the odd one out? (a) chalk powder (b) cooking oil (c) baking soda (d) sand

Answer key

  1. a mirror
  2. False
  3. cooking oil
  4. sugar crystals form
  5. a magnet
  6. baking soda
  7. cannot be undone
  8. a spoon
  9. days to see crystals
  10. glucose powder
  11. dissolves in water
  12. cooking an egg
  13. True
  14. sugar
  15. False
  16. chalk powder
  17. water evaporates
  18. does not dissolve
  19. False
  20. turmeric powder
  21. a piece of string
  22. needed
  23. warm water
  24. food colour
  25. True
  26. does not dissolve
  27. a grown-up
  28. False
  29. bigger crystals
  30. table salt
  31. rusting iron
  32. False
  33. needed
  34. we keep it the same
  35. sawdust
  36. cannot be undone
  37. freezing water
  38. does not dissolve
  39. can be undone
  40. baking soda

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