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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 364 · 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.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
  2. 2.⚖️ 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
  3. 3.True or false: a battery cell is needed for growing salt crystals. (a) False (b) True
  4. 4.🔍 Which is the odd one out? (a) chalk powder (b) cooking oil (c) sugar (d) sand
  5. 5.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) yeast (c) turmeric powder (d) a shallow dish
  6. 6.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
  7. 7.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny triangles (c) tiny stars (d) tiny cubes
  8. 8.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
  9. 9.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) crystals grow faster (c) few or no crystals (d) it turns sweet
  10. 10.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
  11. 11.🧂 Which of these does not dissolve in water? (a) baking soda (b) table salt (c) sawdust (d) glucose powder
  12. 12.True or false: melting butter is a change that can be undone. (a) True (b) False
  13. 13.True or false: a battery cell is not needed for growing salt crystals. (a) True (b) False
  14. 14.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) warm water (c) a spoon (d) a piece of string
  15. 15.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
  16. 16.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
  17. 17.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
  18. 18.True or false: table salt dissolves in water. (a) False (b) True
  19. 19.⚖️ 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) False (b) True
  20. 20.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) on the edge of a table (c) next to the baby (d) in a busy doorway
  21. 21.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) empty (c) saturated (d) frozen
  22. 22.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
  23. 23.⚖️ 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
  24. 24.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
  25. 25.⚖️ 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
  26. 26.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a balloon (c) a spoon (d) warm water
  27. 27.🧂 Which of these does not dissolve in water? (a) food colour (b) sugar (c) small pebbles (d) baking soda
  28. 28.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a balloon (c) salt (d) a piece of string
  29. 29.True or false: yeast is needed for growing salt crystals. (a) True (b) False
  30. 30.True or false: sawdust dissolves in water. (a) True (b) False
  31. 31.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) warm water (c) a spoon (d) a mirror
  32. 32.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
  33. 33.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
  34. 34.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) table salt (d) small pebbles
  35. 35.⚖️ 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
  36. 36.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
  37. 37.⚖️ 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
  38. 38.🧺 Which of these is not needed for growing salt crystals? (a) a battery cell (b) a shallow dish (c) salt (d) warm water
  39. 39.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) salt (c) a battery cell (d) yeast
  40. 40.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed

Answer key

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

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