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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 603 · 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.🛟 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
  2. 2.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a magnet (c) warm water (d) yeast
  3. 3.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
  4. 4.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
  5. 5.True or false: chalk powder does not dissolve in water. (a) True (b) False
  6. 6.⚖️ 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 keep it the same (b) we measure it (c) we change it
  7. 7.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
  8. 8.🧂 Which of these does not dissolve in water? (a) baking soda (b) cooking oil (c) sugar (d) glucose powder
  9. 9.True or false: rusting iron is a change that cannot be undone. (a) False (b) True
  10. 10.True or false: table salt does not dissolve in water. (a) True (b) False
  11. 11.True or false: folding paper is a change that cannot be undone. (a) False (b) True
  12. 12.🔍 Which is the odd one out? (a) sand (b) small pebbles (c) chalk powder (d) glucose powder
  13. 13.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
  14. 14.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) sunny or shady place (b) days to see crystals (c) the same dish
  15. 15.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
  16. 16.🧂 Why do we stir in salt until no more will dissolve? (a) to change its colour (b) to make it fizz (c) to make it very salty (d) to cool the water
  17. 17.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
  18. 18.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) sunny or shady place (b) the amount of salt (c) the kind of salt (d) days to see crystals
  19. 19.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) a balloon (d) a shallow dish
  20. 20.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) dissolving salt (c) freezing water (d) rusting iron
  21. 21.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a magnet (c) a piece of string (d) warm water
  22. 22.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
  23. 23.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a spoon (d) a mirror
  24. 24.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
  25. 25.True or false: baking soda dissolves in water. (a) True (b) False
  26. 26.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is what we measure. (a) True (b) False
  27. 27.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
  28. 28.🔍 Which is the odd one out? (a) baking soda (b) table salt (c) food colour (d) chalk powder
  29. 29.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) True (b) False
  30. 30.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a mirror (c) a balloon (d) a spoon
  31. 31.🔍 Which is the odd one out? (a) cooking oil (b) sawdust (c) baking soda (d) chalk powder
  32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) yeast (d) warm water
  33. 33.True or false: a spoon is needed for growing salt crystals. (a) True (b) False
  34. 34.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
  35. 35.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a piece of string (c) a shallow dish (d) yeast
  36. 36.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
  37. 37.🧂 Which of these dissolves in water? (a) baking soda (b) sawdust (c) sand (d) cooking oil
  38. 38.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) frozen (c) magnetic (d) saturated
  39. 39.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) no crystals (c) bigger crystals (d) liquid crystals
  40. 40.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a battery cell (c) a spoon (d) salt

Answer key

  1. safe from small children
  2. warm water
  3. a grown-up
  4. can be undone
  5. True
  6. we keep it the same
  7. not needed
  8. cooking oil
  9. True
  10. False
  11. False
  12. glucose powder
  13. can be undone
  14. the same dish
  15. can be undone
  16. to make it very salty
  17. needed
  18. days to see crystals
  19. a balloon
  20. rusting iron
  21. a magnet
  22. not needed
  23. a mirror
  24. False
  25. True
  26. False
  27. cannot be undone
  28. chalk powder
  29. False
  30. a spoon
  31. baking soda
  32. yeast
  33. True
  34. not needed
  35. yeast
  36. does not dissolve
  37. baking soda
  38. saturated
  39. bigger crystals
  40. a battery cell

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