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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 360 · 40 questions
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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.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
  2. 2.True or false: folding paper is a change that cannot be undone. (a) True (b) False
  3. 3.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
  4. 4.True or false: a balloon is not needed for growing salt crystals. (a) False (b) True
  5. 5.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a spoon (c) salt (d) a battery cell
  6. 6.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to oil (c) it turns to butter (d) salt crystals form
  7. 7.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
  8. 8.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) browning lemon ink (c) baking a cake (d) freezing water
  9. 9.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) milk turning to curd (c) cooking an egg (d) folding paper
  10. 10.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) True (b) False
  11. 11.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
  12. 12.🧂 Which of these dissolves in water? (a) sand (b) table salt (c) chalk powder (d) sawdust
  13. 13.True or false: glucose powder dissolves in water. (a) True (b) False
  14. 14.🧂 Which of these does not dissolve in water? (a) food colour (b) sand (c) sugar (d) table salt
  15. 15.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a piece of string (c) warm water (d) a balloon
  16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) a piece of string (d) turmeric powder
  17. 17.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
  18. 18.⚖️ 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 amount of salt (b) days to see crystals (c) the same dish (d) sunny or shady place
  19. 19.🔍 Which is the odd one out? (a) table salt (b) sugar (c) food colour (d) cooking oil
  20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a piece of string (c) yeast (d) salt
  21. 21.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
  22. 22.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) no crystals (c) bigger crystals (d) liquid crystals
  23. 23.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
  24. 24.True or false: sawdust does not dissolve in water. (a) True (b) False
  25. 25.True or false: sugar does not dissolve in water. (a) True (b) False
  26. 26.🧂 Which of these dissolves in water? (a) baking soda (b) cooking oil (c) sand (d) chalk powder
  27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is what we measure. (a) True (b) False
  28. 28.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) a magnet (d) warm water
  29. 29.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is the one thing we change. (a) True (b) False
  30. 30.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a balloon (c) a shallow dish (d) warm water
  31. 31.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
  32. 32.⚖️ 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) False (b) True
  33. 33.True or false: salt is not needed for growing salt crystals. (a) True (b) False
  34. 34.True or false: salt is needed for growing salt crystals. (a) False (b) True
  35. 35.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a mirror (c) a spoon (d) a shallow dish
  36. 36.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False
  37. 37.True or false: sawdust dissolves in water. (a) False (b) True
  38. 38.🧂 Which of these does not dissolve in water? (a) chalk powder (b) glucose powder (c) sugar (d) food colour
  39. 39.True or false: baking a cake is a change that can be undone. (a) True (b) False
  40. 40.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a shallow dish (c) yeast (d) a piece of string

Answer key

  1. needed
  2. False
  3. a grown-up
  4. True
  5. a battery cell
  6. sugar crystals form
  7. does not dissolve
  8. freezing water
  9. folding paper
  10. True
  11. needed
  12. table salt
  13. True
  14. sand
  15. a balloon
  16. turmeric powder
  17. True
  18. days to see crystals
  19. cooking oil
  20. yeast
  21. we keep it the same
  22. bigger crystals
  23. dissolves in water
  24. True
  25. False
  26. baking soda
  27. True
  28. a magnet
  29. False
  30. a balloon
  31. dissolves in water
  32. True
  33. False
  34. True
  35. a mirror
  36. True
  37. False
  38. chalk powder
  39. False
  40. yeast

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