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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 839 · 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.True or false: cooking an egg is a change that can be undone. (a) True (b) False
  2. 2.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
  3. 3.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a battery cell (c) a piece of string (d) yeast
  4. 4.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is what we measure. (a) True (b) False
  5. 5.True or false: sawdust dissolves in water. (a) True (b) False
  6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) warm water (c) a battery cell (d) a shallow dish
  7. 7.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) salt rains down (c) sea water evaporates (d) sand is ground up
  8. 8.True or false: sawdust does not dissolve in water. (a) True (b) False
  9. 9.True or false: rusting iron is a change that cannot be undone. (a) False (b) True
  10. 10.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) crystals grow faster (c) it turns sweet (d) few or no crystals
  11. 11.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a mirror (c) a piece of string (d) a shallow dish
  12. 12.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
  13. 13.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a piece of string (c) salt (d) a balloon
  14. 14.🔍 Which is the odd one out? (a) food colour (b) cooking oil (c) baking soda (d) table salt
  15. 15.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a piece of string (c) salt (d) a battery cell
  16. 16.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
  17. 17.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) turmeric powder (c) a mirror (d) a spoon
  18. 18.True or false: glucose powder does not dissolve in water. (a) False (b) True
  19. 19.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
  20. 20.🧂 Which of these dissolves in water? (a) cooking oil (b) sawdust (c) small pebbles (d) sugar
  21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a magnet (d) a shallow dish
  22. 22.True or false: a piece of string is needed for growing salt crystals. (a) False (b) True
  23. 23.⚖️ 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) False (b) True
  24. 24.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
  25. 25.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
  26. 26.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) days to see crystals (b) sunny or shady place (c) the amount of water
  27. 27.True or false: milk turning to curd is a change that can be undone. (a) False (b) True
  28. 28.🔍 Which is the odd one out? (a) cooking oil (b) sawdust (c) small pebbles (d) glucose powder
  29. 29.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
  30. 30.True or false: chalk powder dissolves in water. (a) False (b) True
  31. 31.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
  32. 32.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a shallow dish (c) turmeric powder (d) a magnet
  33. 33.True or false: a mirror is not needed for growing salt crystals. (a) True (b) False
  34. 34.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
  35. 35.True or false: baking soda does not dissolve in water. (a) False (b) True
  36. 36.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
  37. 37.⚖️ 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
  38. 38.🔍 Which is the odd one out? (a) chalk powder (b) cooking oil (c) table salt (d) small pebbles
  39. 39.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
  40. 40.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) yeast (c) salt (d) a piece of string

Answer key

  1. False
  2. dissolves in water
  3. a piece of string
  4. True
  5. False
  6. a battery cell
  7. sea water evaporates
  8. True
  9. True
  10. few or no crystals
  11. a mirror
  12. can be undone
  13. a balloon
  14. cooking oil
  15. a battery cell
  16. True
  17. a spoon
  18. False
  19. can be undone
  20. sugar
  21. a magnet
  22. True
  23. False
  24. cannot be undone
  25. does not dissolve
  26. the amount of water
  27. False
  28. glucose powder
  29. can be undone
  30. False
  31. a grown-up
  32. a shallow dish
  33. True
  34. False
  35. False
  36. needed
  37. we change it
  38. table salt
  39. not needed
  40. yeast

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