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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 125 · 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: glucose powder dissolves in water. (a) True (b) False
  2. 2.🔍 Which is the odd one out? (a) sawdust (b) sand (c) table salt (d) chalk powder
  3. 3.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
  4. 4.True or false: folding paper is a change that can be undone. (a) True (b) False
  5. 5.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) smaller crystals (c) liquid crystals (d) bigger crystals
  6. 6.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a magnet (c) salt (d) turmeric powder
  7. 7.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
  8. 8.True or false: turmeric powder is needed for growing salt crystals. (a) False (b) True
  9. 9.⚖️ 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 keep it the same (b) we measure it (c) we change it
  10. 10.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) yeast (c) a balloon (d) a shallow dish
  11. 11.⚖️ 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
  12. 12.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) water evaporates (c) the dish melts (d) salt eats water
  13. 13.🧺 Which of these is not needed for growing salt crystals? (a) yeast (b) a piece of string (c) warm water (d) a spoon
  14. 14.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
  15. 15.True or false: salt is needed for growing salt crystals. (a) True (b) False
  16. 16.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
  17. 17.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) it turns to oil (c) salt crystals form (d) sugar crystals form
  18. 18.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
  19. 19.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
  20. 20.🔍 Which is the odd one out? (a) small pebbles (b) glucose powder (c) cooking oil (d) sawdust
  21. 21.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
  22. 22.True or false: chalk powder does not dissolve in water. (a) True (b) False
  23. 23.🧂 Why do we stir in salt until no more will dissolve? (a) to cool the water (b) to change its colour (c) to make it very salty (d) to make it fizz
  24. 24.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) browning lemon ink (c) dissolving salt (d) milk turning to curd
  25. 25.🧈 Which of these is a change that can be undone? (a) folding paper (b) baking a cake (c) cooking an egg (d) rusting iron
  26. 26.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) warm water (d) a mirror
  27. 27.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
  28. 28.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) days to see crystals (b) the amount of water (c) the amount of salt (d) the kind of salt
  29. 29.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) a piece of string (c) salt (d) warm water
  30. 30.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) in a busy doorway (c) safe from small children (d) next to the baby
  31. 31.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) melting butter (c) freezing water (d) milk turning to curd
  32. 32.🧂 Which of these dissolves in water? (a) small pebbles (b) sand (c) food colour (d) chalk powder
  33. 33.True or false: melting ice is a change that cannot be undone. (a) True (b) False
  34. 34.True or false: turmeric powder is not needed for growing salt crystals. (a) True (b) False
  35. 35.True or false: sand dissolves in water. (a) False (b) True
  36. 36.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) turmeric powder (c) a battery cell (d) a mirror
  37. 37.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
  38. 38.True or false: a magnet is not needed for growing salt crystals. (a) True (b) False
  39. 39.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) dissolving salt (c) baking a cake (d) melting ice
  40. 40.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve

Answer key

  1. True
  2. table salt
  3. True
  4. True
  5. bigger crystals
  6. salt
  7. dissolves in water
  8. False
  9. we change it
  10. a shallow dish
  11. False
  12. water evaporates
  13. yeast
  14. can be undone
  15. True
  16. can be undone
  17. sugar crystals form
  18. does not dissolve
  19. needed
  20. glucose powder
  21. False
  22. True
  23. to make it very salty
  24. dissolving salt
  25. folding paper
  26. a mirror
  27. cannot be undone
  28. days to see crystals
  29. turmeric powder
  30. safe from small children
  31. milk turning to curd
  32. food colour
  33. False
  34. True
  35. False
  36. warm water
  37. needed
  38. True
  39. baking a cake
  40. does not dissolve

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