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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 382 · 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.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) salt eats water (c) water evaporates (d) the dish melts
  2. 2.🧂 Which of these dissolves in water? (a) table salt (b) sawdust (c) chalk powder (d) cooking oil
  3. 3.🔍 Which is the odd one out? (a) sugar (b) small pebbles (c) baking soda (d) table salt
  4. 4.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
  5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) a spoon (c) a shallow dish (d) salt
  6. 6.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
  7. 7.True or false: small pebbles dissolves in water. (a) False (b) True
  8. 8.True or false: sand dissolves in water. (a) False (b) True
  9. 9.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a battery cell (c) a mirror (d) a shallow dish
  10. 10.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a spoon (c) yeast (d) a magnet
  11. 11.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
  12. 12.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
  13. 13.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) a battery cell (c) a magnet (d) a mirror
  14. 14.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
  15. 15.True or false: baking a cake is a change that cannot be undone. (a) True (b) False
  16. 16.🔍 Which is the odd one out? (a) chalk powder (b) cooking oil (c) small pebbles (d) sugar
  17. 17.🧈 Which of these is a change that can be undone? (a) melting butter (b) milk turning to curd (c) rusting iron (d) baking a cake
  18. 18.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a battery cell (c) a shallow dish (d) salt
  19. 19.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
  20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) yeast (c) warm water (d) a spoon
  21. 21.🔍 Which is the odd one out? (a) baking soda (b) table salt (c) sawdust (d) food colour
  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 the one thing we change. (a) False (b) True
  23. 23.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
  24. 24.True or false: salt is needed for growing salt crystals. (a) True (b) False
  25. 25.🛟 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
  26. 26.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to oil (c) sugar crystals form (d) it turns to butter
  27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the amount of salt (b) the kind of salt (c) days to see crystals (d) the amount of water
  28. 28.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
  29. 29.True or false: turmeric powder is needed for growing salt crystals. (a) False (b) True
  30. 30.🧂 Which of these does not dissolve in water? (a) food colour (b) sawdust (c) glucose powder (d) table salt
  31. 31.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) a battery cell (d) a piece of string
  32. 32.True or false: chalk powder does not dissolve in water. (a) False (b) True
  33. 33.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) cooking an egg (c) freezing water (d) melting ice
  34. 34.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) cooking an egg (c) rusting iron (d) dissolving salt
  35. 35.True or false: food colour does not dissolve in water. (a) True (b) False
  36. 36.⚖️ 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
  37. 37.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
  38. 38.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
  39. 39.True or false: chalk powder dissolves in water. (a) True (b) False
  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 keep it the same (b) we change it (c) we measure it

Answer key

  1. water evaporates
  2. table salt
  3. small pebbles
  4. a grown-up
  5. a balloon
  6. cannot be undone
  7. False
  8. False
  9. a shallow dish
  10. a spoon
  11. can be undone
  12. cannot be undone
  13. warm water
  14. False
  15. True
  16. sugar
  17. melting butter
  18. a battery cell
  19. dissolves in water
  20. yeast
  21. sawdust
  22. True
  23. True
  24. True
  25. safe from small children
  26. sugar crystals form
  27. days to see crystals
  28. cannot be undone
  29. False
  30. sawdust
  31. a battery cell
  32. True
  33. cooking an egg
  34. dissolving salt
  35. False
  36. we keep it the same
  37. dissolves in water
  38. not needed
  39. False
  40. we keep it the same

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