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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 113 · 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 is a change that cannot be undone? (a) folding paper (b) rusting iron (c) melting butter (d) dissolving salt
  2. 2.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
  3. 3.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
  4. 4.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the kind of salt (b) sunny or shady place (c) days to see crystals
  5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) turmeric powder (d) salt
  6. 6.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) few or no crystals (c) it fizzes (d) crystals grow faster
  7. 7.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
  8. 8.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a mirror (c) warm water (d) salt
  9. 9.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a battery cell (c) a piece of string (d) salt
  10. 10.🔍 Which is the odd one out? (a) chalk powder (b) sugar (c) baking soda (d) food colour
  11. 11.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to oil (c) salt crystals form (d) it turns to butter
  12. 12.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) melting ice (c) browning lemon ink (d) baking a cake
  13. 13.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) saturated (c) empty (d) magnetic
  14. 14.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
  15. 15.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
  16. 16.True or false: a balloon is not needed for growing salt crystals. (a) True (b) False
  17. 17.🧂 Which of these dissolves in water? (a) cooking oil (b) chalk powder (c) sugar (d) sand
  18. 18.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
  19. 19.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
  20. 20.True or false: baking a cake is a change that cannot be undone. (a) True (b) False
  21. 21.True or false: sand does not dissolve in water. (a) False (b) True
  22. 22.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a shallow dish (c) turmeric powder (d) a balloon
  23. 23.True or false: baking a cake is a change that can be undone. (a) True (b) False
  24. 24.True or false: small pebbles dissolves in water. (a) True (b) False
  25. 25.True or false: baking soda does not dissolve in water. (a) True (b) False
  26. 26.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a magnet (c) a shallow dish (d) a spoon
  27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is the one thing we change. (a) True (b) False
  28. 28.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a piece of string (c) a shallow dish (d) a balloon
  29. 29.⚖️ 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) days to see crystals (c) the amount of water (d) the amount of salt
  30. 30.True or false: chalk powder does not dissolve in water. (a) True (b) False
  31. 31.True or false: salt is not needed for growing salt crystals. (a) True (b) False
  32. 32.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) cooking an egg (c) melting ice (d) freezing water
  33. 33.🌊 How is salt made in salt pans by the sea? (a) sea water evaporates (b) sand is ground up (c) fish make it (d) salt rains down
  34. 34.True or false: folding paper is a change that can be undone. (a) True (b) False
  35. 35.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
  36. 36.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
  37. 37.🧂 Which of these does not dissolve in water? (a) sugar (b) cooking oil (c) table salt (d) baking soda
  38. 38.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
  39. 39.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) a piece of string (c) salt (d) a shallow dish
  40. 40.🧂 Which of these dissolves in water? (a) table salt (b) cooking oil (c) sawdust (d) sand

Answer key

  1. rusting iron
  2. needed
  3. needed
  4. the kind of salt
  5. turmeric powder
  6. few or no crystals
  7. not needed
  8. a mirror
  9. a battery cell
  10. chalk powder
  11. sugar crystals form
  12. melting ice
  13. saturated
  14. not needed
  15. needed
  16. True
  17. sugar
  18. dissolves in water
  19. can be undone
  20. True
  21. True
  22. a shallow dish
  23. False
  24. False
  25. False
  26. a magnet
  27. False
  28. a balloon
  29. days to see crystals
  30. True
  31. False
  32. cooking an egg
  33. sea water evaporates
  34. True
  35. False
  36. not needed
  37. cooking oil
  38. cannot be undone
  39. a balloon
  40. table salt

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