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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 703 · 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.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) a magnet (d) a spoon
  2. 2.🧂 Which of these dissolves in water? (a) sand (b) sawdust (c) food colour (d) cooking oil
  3. 3.🧂 Which of these dissolves in water? (a) chalk powder (b) table salt (c) cooking oil (d) small pebbles
  4. 4.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
  5. 5.🧂 Which of these does not dissolve in water? (a) chalk powder (b) baking soda (c) sugar (d) food colour
  6. 6.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) turmeric powder (c) a balloon (d) salt
  7. 7.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) smaller crystals (c) liquid crystals (d) bigger crystals
  8. 8.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
  9. 9.🔍 Which is the odd one out? (a) baking soda (b) sand (c) table salt (d) glucose powder
  10. 10.True or false: sawdust does not dissolve in water. (a) True (b) False
  11. 11.True or false: warm water is needed for growing salt crystals. (a) False (b) True
  12. 12.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) salt (c) turmeric powder (d) warm water
  13. 13.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) rusting iron (c) folding paper (d) freezing water
  14. 14.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
  15. 15.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
  16. 16.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
  17. 17.🛟 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
  18. 18.🔍 Which is the odd one out? (a) small pebbles (b) chalk powder (c) sand (d) table salt
  19. 19.🧈 Which of these is a change that can be undone? (a) folding paper (b) cooking an egg (c) browning lemon ink (d) rusting iron
  20. 20.🔍 Which is the odd one out? (a) sawdust (b) chalk powder (c) small pebbles (d) glucose powder
  21. 21.True or false: milk turning to curd is a change that can be undone. (a) False (b) True
  22. 22.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
  23. 23.True or false: glucose powder does not dissolve in water. (a) True (b) False
  24. 24.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
  25. 25.True or false: sugar does not dissolve in water. (a) True (b) False
  26. 26.⚖️ 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
  27. 27.True or false: sand dissolves in water. (a) False (b) True
  28. 28.⚖️ 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) sunny or shady place (c) the same dish
  29. 29.⚖️ 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 keep it the same (b) we change it (c) we measure it
  30. 30.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a balloon (c) a piece of string (d) a shallow dish
  31. 31.⚖️ 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) True (b) False
  32. 32.🔍 Which is the odd one out? (a) sawdust (b) table salt (c) baking soda (d) food colour
  33. 33.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) turmeric powder (c) salt (d) a spoon
  34. 34.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a battery cell (c) yeast (d) a spoon
  35. 35.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
  36. 36.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
  37. 37.True or false: freezing water is a change that can be undone. (a) True (b) False
  38. 38.True or false: freezing water is a change that cannot be undone. (a) True (b) False
  39. 39.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
  40. 40.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we measure it (b) we change it (c) we keep it the same

Answer key

  1. a magnet
  2. food colour
  3. table salt
  4. not needed
  5. chalk powder
  6. salt
  7. bigger crystals
  8. False
  9. sand
  10. True
  11. True
  12. turmeric powder
  13. rusting iron
  14. cannot be undone
  15. does not dissolve
  16. not needed
  17. safe from small children
  18. table salt
  19. folding paper
  20. glucose powder
  21. False
  22. cannot be undone
  23. False
  24. not needed
  25. False
  26. we change it
  27. False
  28. the same dish
  29. we measure it
  30. a balloon
  31. True
  32. sawdust
  33. turmeric powder
  34. a spoon
  35. not needed
  36. a grown-up
  37. True
  38. False
  39. can be undone
  40. we keep it the same

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