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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 576 · 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.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) days to see crystals (b) sunny or shady place (c) the kind of salt (d) the amount of water
  2. 2.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) in a busy doorway (c) next to the baby (d) on the edge of a table
  3. 3.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) the dish melts (c) salt grows roots (d) water evaporates
  4. 4.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
  5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) warm water (d) a balloon
  6. 6.True or false: browning lemon ink is a change that cannot be undone. (a) False (b) True
  7. 7.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) folding paper (c) baking a cake (d) rusting iron
  8. 8.⚖️ 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 measure it (c) we keep it the same
  9. 9.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting ice (c) milk turning to curd (d) melting butter
  10. 10.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
  11. 11.True or false: cooking an egg is a change that cannot be undone. (a) False (b) True
  12. 12.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
  13. 13.True or false: milk turning to curd is a change that cannot be undone. (a) True (b) False
  14. 14.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
  15. 15.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
  16. 16.True or false: melting ice is a change that can be undone. (a) False (b) True
  17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) warm water (c) salt (d) turmeric powder
  18. 18.True or false: rusting iron is a change that can be undone. (a) True (b) False
  19. 19.True or false: a mirror is needed for growing salt crystals. (a) False (b) True
  20. 20.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
  21. 21.🧂 Which of these dissolves in water? (a) sawdust (b) cooking oil (c) sand (d) food colour
  22. 22.True or false: folding paper is a change that cannot be undone. (a) False (b) True
  23. 23.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) cooking an egg (c) melting ice (d) folding paper
  24. 24.🔍 Which is the odd one out? (a) food colour (b) baking soda (c) cooking oil (d) table salt
  25. 25.🧺 Which of these is not needed for growing salt crystals? (a) a magnet (b) warm water (c) a spoon (d) a piece of string
  26. 26.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) melting butter (c) baking a cake (d) browning lemon ink
  27. 27.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a piece of string (c) turmeric powder (d) salt
  28. 28.True or false: yeast is needed for growing salt crystals. (a) True (b) False
  29. 29.🔍 Which is the odd one out? (a) baking soda (b) glucose powder (c) chalk powder (d) sugar
  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) True (b) False
  31. 31.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
  32. 32.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
  33. 33.🧂 Which of these does not dissolve in water? (a) table salt (b) food colour (c) chalk powder (d) glucose powder
  34. 34.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
  35. 35.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) frozen (c) magnetic (d) empty
  36. 36.⚖️ 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 change it (b) we measure it (c) we keep it the same
  37. 37.⚖️ 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 keep it the same (c) we change it
  38. 38.True or false: melting ice is a change that cannot be undone. (a) False (b) True
  39. 39.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
  40. 40.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed

Answer key

  1. sunny or shady place
  2. safe from small children
  3. water evaporates
  4. False
  5. a balloon
  6. True
  7. folding paper
  8. we measure it
  9. milk turning to curd
  10. False
  11. True
  12. a grown-up
  13. True
  14. dissolves in water
  15. can be undone
  16. True
  17. turmeric powder
  18. False
  19. False
  20. not needed
  21. food colour
  22. False
  23. cooking an egg
  24. cooking oil
  25. a magnet
  26. melting butter
  27. turmeric powder
  28. False
  29. chalk powder
  30. True
  31. needed
  32. not needed
  33. chalk powder
  34. needed
  35. saturated
  36. we change it
  37. we keep it the same
  38. False
  39. can be undone
  40. not needed

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