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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 316 · 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 of these does not dissolve in water? (a) table salt (b) food colour (c) sugar (d) chalk powder
  2. 2.True or false: browning lemon ink is a change that cannot be undone. (a) False (b) True
  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.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) a balloon (c) a battery cell (d) a magnet
  5. 5.⚖️ 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) the same dish (c) days to see crystals
  6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a magnet (c) a shallow dish (d) a spoon
  7. 7.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) salt (c) a mirror (d) a spoon
  8. 8.⚖️ 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) False (b) True
  9. 9.⚖️ 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 kind of salt (b) days to see crystals (c) the amount of salt (d) the amount of water
  10. 10.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
  11. 11.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
  12. 12.⚖️ 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) False (b) True
  13. 13.⚖️ 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
  14. 14.🧂 Which of these dissolves in water? (a) chalk powder (b) baking soda (c) cooking oil (d) sand
  15. 15.🔍 Which is the odd one out? (a) sugar (b) sawdust (c) table salt (d) glucose powder
  16. 16.True or false: glucose powder dissolves in water. (a) False (b) True
  17. 17.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
  18. 18.True or false: baking soda does not dissolve in water. (a) True (b) False
  19. 19.🔍 Which is the odd one out? (a) sawdust (b) small pebbles (c) table salt (d) cooking oil
  20. 20.True or false: folding paper is a change that cannot be undone. (a) True (b) False
  21. 21.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a magnet (c) a piece of string (d) a balloon
  22. 22.True or false: sand dissolves in water. (a) False (b) True
  23. 23.🔍 Which is the odd one out? (a) glucose powder (b) chalk powder (c) sand (d) cooking oil
  24. 24.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
  25. 25.True or false: dissolving salt is a change that cannot be undone. (a) False (b) True
  26. 26.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) a shallow dish (d) a balloon
  27. 27.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) freezing water (c) baking a cake (d) melting butter
  28. 28.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) freezing water (c) melting ice (d) rusting iron
  29. 29.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a mirror (c) turmeric powder (d) salt
  30. 30.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) folding paper (c) melting ice (d) browning lemon ink
  31. 31.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) a spoon (c) a shallow dish (d) warm water
  32. 32.🧈 Which of these is a change that can be undone? (a) rusting iron (b) browning lemon ink (c) dissolving salt (d) milk turning to curd
  33. 33.True or false: sugar does not dissolve in water. (a) False (b) True
  34. 34.🧂 Which of these does not dissolve in water? (a) small pebbles (b) sugar (c) table salt (d) glucose powder
  35. 35.True or false: rusting iron is a change that cannot be undone. (a) True (b) False
  36. 36.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) salt eats water (c) water evaporates (d) the dish melts
  37. 37.True or false: baking soda dissolves in water. (a) True (b) False
  38. 38.⚖️ 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) False (b) True
  39. 39.True or false: cooking an egg is a change that can be undone. (a) True (b) False
  40. 40.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water

Answer key

  1. chalk powder
  2. True
  3. a grown-up
  4. warm water
  5. the same dish
  6. a magnet
  7. a mirror
  8. True
  9. days to see crystals
  10. False
  11. cannot be undone
  12. False
  13. we keep it the same
  14. baking soda
  15. sawdust
  16. True
  17. dissolves in water
  18. False
  19. table salt
  20. False
  21. a piece of string
  22. False
  23. glucose powder
  24. cannot be undone
  25. False
  26. a balloon
  27. baking a cake
  28. rusting iron
  29. salt
  30. browning lemon ink
  31. a mirror
  32. dissolving salt
  33. False
  34. small pebbles
  35. True
  36. water evaporates
  37. True
  38. True
  39. False
  40. does not dissolve

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