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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 919 · 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.🔍 Which is the odd one out? (a) glucose powder (b) cooking oil (c) sand (d) chalk powder
  2. 2.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
  3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a balloon (c) salt (d) a piece of string
  4. 4.🧺 Which of these is not needed for growing salt crystals? (a) a battery cell (b) a piece of string (c) a spoon (d) salt
  5. 5.🧂 Which of these does not dissolve in water? (a) glucose powder (b) cooking oil (c) sugar (d) table salt
  6. 6.⚖️ 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
  7. 7.True or false: table salt does not dissolve in water. (a) True (b) False
  8. 8.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
  9. 9.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
  10. 10.⚖️ 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 keep it the same (c) we measure it
  11. 11.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) cooking an egg (c) folding paper (d) baking a cake
  12. 12.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a battery cell (c) a piece of string (d) a magnet
  13. 13.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
  14. 14.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
  15. 15.⚖️ 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) True (b) False
  16. 16.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
  17. 17.True or false: turmeric powder is needed for growing salt crystals. (a) False (b) True
  18. 18.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
  19. 19.True or false: salt is needed for growing salt crystals. (a) True (b) False
  20. 20.True or false: table salt dissolves in water. (a) False (b) True
  21. 21.🔍 Which is the odd one out? (a) sugar (b) sawdust (c) chalk powder (d) sand
  22. 22.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is what we measure. (a) False (b) True
  23. 23.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) freezing water (c) cooking an egg (d) rusting iron
  24. 24.True or false: chalk powder dissolves in water. (a) False (b) True
  25. 25.True or false: a battery cell is not needed for growing salt crystals. (a) True (b) False
  26. 26.True or false: salt is not needed for growing salt crystals. (a) False (b) True
  27. 27.True or false: melting butter is a change that can be undone. (a) True (b) False
  28. 28.⚖️ 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
  29. 29.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) True (b) False
  30. 30.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
  31. 31.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a magnet (c) a piece of string (d) a spoon
  32. 32.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False
  33. 33.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) liquid crystals (c) smaller crystals (d) no crystals
  34. 34.🔍 Which is the odd one out? (a) food colour (b) sand (c) glucose powder (d) sugar
  35. 35.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
  36. 36.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny stars (c) tiny triangles (d) tiny spheres
  37. 37.True or false: warm water is needed for growing salt crystals. (a) True (b) False
  38. 38.⚖️ 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 change it (b) we measure it (c) we keep it the same
  39. 39.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
  40. 40.🧂 Which of these does not dissolve in water? (a) baking soda (b) table salt (c) sugar (d) chalk powder

Answer key

  1. glucose powder
  2. needed
  3. a balloon
  4. a battery cell
  5. cooking oil
  6. False
  7. False
  8. dissolves in water
  9. not needed
  10. we keep it the same
  11. folding paper
  12. a piece of string
  13. not needed
  14. cannot be undone
  15. True
  16. needed
  17. False
  18. False
  19. True
  20. True
  21. sugar
  22. False
  23. freezing water
  24. False
  25. True
  26. False
  27. True
  28. we change it
  29. True
  30. a grown-up
  31. a magnet
  32. True
  33. bigger crystals
  34. sand
  35. dissolves in water
  36. tiny cubes
  37. True
  38. we keep it the same
  39. not needed
  40. chalk powder

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