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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 749 · 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? Which of these is kept the same? (a) the kind of salt (b) sunny or shady place (c) days to see crystals
  2. 2.True or false: dissolving salt is a change that can be undone. (a) False (b) True
  3. 3.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
  4. 4.🧂 Which of these does not dissolve in water? (a) sugar (b) food colour (c) sawdust (d) baking soda
  5. 5.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we change it (b) we measure it (c) we keep it the same
  6. 6.True or false: a balloon is needed for growing salt crystals. (a) False (b) True
  7. 7.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
  8. 8.⚖️ 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) False (b) True
  9. 9.🧺 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
  10. 10.🔍 Which is the odd one out? (a) glucose powder (b) chalk powder (c) small pebbles (d) sand
  11. 11.True or false: salt is not needed for growing salt crystals. (a) True (b) False
  12. 12.⚖️ 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 measure it (b) we change it (c) we keep it the same
  13. 13.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) frozen (c) empty (d) magnetic
  14. 14.True or false: sawdust dissolves in water. (a) True (b) False
  15. 15.True or false: glucose powder does not dissolve in water. (a) True (b) False
  16. 16.⚖️ 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 keep it the same (b) we change it (c) we measure it
  17. 17.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
  18. 18.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a shallow dish (c) a balloon (d) turmeric powder
  19. 19.🔍 Which is the odd one out? (a) baking soda (b) sugar (c) table salt (d) chalk powder
  20. 20.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
  21. 21.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it turns sweet (c) few or no crystals (d) it fizzes
  22. 22.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
  23. 23.🧺 Which of these is not needed for growing salt crystals? (a) a magnet (b) a spoon (c) warm water (d) a piece of string
  24. 24.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) in a busy doorway (c) safe from small children (d) on the edge of a table
  25. 25.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) dissolving salt (c) melting ice (d) milk turning to curd
  26. 26.🧂 Which of these does not dissolve in water? (a) baking soda (b) cooking oil (c) food colour (d) sugar
  27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) False (b) True
  28. 28.🧂 Which of these dissolves in water? (a) cooking oil (b) sand (c) glucose powder (d) sawdust
  29. 29.True or false: chalk powder dissolves in water. (a) True (b) False
  30. 30.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
  31. 31.⚖️ 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 measure it (c) we change it
  32. 32.🔍 Which is the odd one out? (a) food colour (b) baking soda (c) table salt (d) sawdust
  33. 33.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
  34. 34.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False
  35. 35.True or false: glucose powder dissolves in water. (a) True (b) False
  36. 36.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
  37. 37.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
  38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) yeast (c) a shallow dish (d) a spoon
  39. 39.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
  40. 40.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed

Answer key

  1. the kind of salt
  2. True
  3. cannot be undone
  4. sawdust
  5. we change it
  6. False
  7. does not dissolve
  8. True
  9. a magnet
  10. glucose powder
  11. False
  12. we keep it the same
  13. saturated
  14. False
  15. False
  16. we keep it the same
  17. needed
  18. a shallow dish
  19. chalk powder
  20. False
  21. few or no crystals
  22. not needed
  23. a magnet
  24. safe from small children
  25. milk turning to curd
  26. cooking oil
  27. True
  28. glucose powder
  29. False
  30. needed
  31. we keep it the same
  32. sawdust
  33. can be undone
  34. False
  35. True
  36. needed
  37. a grown-up
  38. yeast
  39. dissolves in water
  40. not needed

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