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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 865 · 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.True or false: a mirror is needed for growing salt crystals. (a) False (b) True
  2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a magnet (c) salt (d) a shallow dish
  3. 3.True or false: yeast is needed for growing salt crystals. (a) True (b) False
  4. 4.🔍 Which is the odd one out? (a) table salt (b) glucose powder (c) chalk powder (d) baking soda
  5. 5.True or false: table salt does not dissolve in water. (a) True (b) False
  6. 6.⚖️ 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
  7. 7.🧺 Which of these is not needed for growing salt crystals? (a) a battery cell (b) warm water (c) salt (d) a shallow dish
  8. 8.⚖️ 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
  9. 9.True or false: cooking oil dissolves in water. (a) True (b) False
  10. 10.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is what we measure. (a) True (b) False
  11. 11.True or false: small pebbles does not dissolve in water. (a) True (b) False
  12. 12.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to oil (c) sugar crystals form (d) it turns to butter
  13. 13.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) frozen (c) empty (d) saturated
  14. 14.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
  15. 15.True or false: rusting iron is a change that can be undone. (a) True (b) False
  16. 16.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
  17. 17.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
  18. 18.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) a spoon (d) a battery cell
  19. 19.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
  20. 20.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
  21. 21.True or false: salt is not needed for growing salt crystals. (a) True (b) False
  22. 22.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
  23. 23.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
  24. 24.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
  25. 25.True or false: a magnet is not needed for growing salt crystals. (a) True (b) False
  26. 26.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) True (b) False
  27. 27.🧂 Which of these does not dissolve in water? (a) food colour (b) sand (c) glucose powder (d) sugar
  28. 28.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) folding paper (c) milk turning to curd (d) melting ice
  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.True or false: sand does not dissolve in water. (a) True (b) False
  31. 31.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
  32. 32.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
  33. 33.🧂 Which of these dissolves in water? (a) small pebbles (b) sand (c) cooking oil (d) table salt
  34. 34.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
  35. 35.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) bigger crystals (c) no crystals (d) smaller crystals
  36. 36.⚖️ 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 change it (b) we keep it the same (c) we measure it
  37. 37.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
  38. 38.🔍 Which is the odd one out? (a) sawdust (b) cooking oil (c) food colour (d) sand
  39. 39.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
  40. 40.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) a mirror (c) yeast (d) turmeric powder

Answer key

  1. False
  2. a magnet
  3. False
  4. chalk powder
  5. False
  6. we keep it the same
  7. a battery cell
  8. we keep it the same
  9. False
  10. False
  11. True
  12. sugar crystals form
  13. saturated
  14. a grown-up
  15. False
  16. can be undone
  17. False
  18. a battery cell
  19. can be undone
  20. does not dissolve
  21. False
  22. dissolves in water
  23. does not dissolve
  24. not needed
  25. True
  26. True
  27. sand
  28. milk turning to curd
  29. False
  30. True
  31. not needed
  32. False
  33. table salt
  34. needed
  35. bigger crystals
  36. we keep it the same
  37. dissolves in water
  38. food colour
  39. dissolves in water
  40. a piece of string

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