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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 333 · 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.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) safe from small children (c) in a busy doorway (d) next to the baby
  2. 2.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
  3. 3.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we change it (b) we keep it the same (c) we measure it
  4. 4.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) warm water (d) a mirror
  5. 5.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
  6. 6.⚖️ 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 measure it (c) we keep it the same
  7. 7.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
  8. 8.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
  9. 9.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
  10. 10.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) few or no crystals (c) crystals grow faster (d) it fizzes
  11. 11.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) frozen (c) magnetic (d) empty
  12. 12.⚖️ 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) the same dish (c) sunny or shady place
  13. 13.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) water evaporates (c) salt grows roots (d) the dish melts
  14. 14.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
  15. 15.🔍 Which is the odd one out? (a) cooking oil (b) sand (c) glucose powder (d) small pebbles
  16. 16.True or false: a magnet is not needed for growing salt crystals. (a) True (b) False
  17. 17.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) False (b) True
  18. 18.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) no crystals (c) smaller crystals (d) bigger crystals
  19. 19.True or false: folding paper is a change that can be undone. (a) True (b) False
  20. 20.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
  21. 21.🔍 Which is the odd one out? (a) chalk powder (b) sawdust (c) sugar (d) sand
  22. 22.True or false: salt is not needed for growing salt crystals. (a) False (b) True
  23. 23.True or false: chalk powder does not dissolve in water. (a) False (b) True
  24. 24.🧂 Which of these does not dissolve in water? (a) table salt (b) food colour (c) glucose powder (d) sand
  25. 25.🔍 Which is the odd one out? (a) chalk powder (b) baking soda (c) glucose powder (d) sugar
  26. 26.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
  27. 27.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
  28. 28.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) yeast (c) warm water (d) a balloon
  29. 29.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
  30. 30.⚖️ 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
  31. 31.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) warm water (d) yeast
  32. 32.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) salt (c) a battery cell (d) turmeric powder
  33. 33.⚖️ 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 measure it (c) we keep it the same
  34. 34.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
  35. 35.🧂 Which of these dissolves in water? (a) sugar (b) sawdust (c) chalk powder (d) sand
  36. 36.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
  37. 37.🔍 Which is the odd one out? (a) food colour (b) sawdust (c) sugar (d) table salt
  38. 38.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
  39. 39.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
  40. 40.True or false: glucose powder does not dissolve in water. (a) False (b) True

Answer key

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

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