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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 275 · 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 dissolves in water? (a) cooking oil (b) chalk powder (c) table salt (d) sand
  2. 2.True or false: baking soda does not dissolve in water. (a) False (b) True
  3. 3.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) yeast (c) a mirror (d) warm water
  4. 4.⚖️ 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) True (b) False
  5. 5.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
  6. 6.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
  7. 7.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
  8. 8.True or false: browning lemon ink is a change that can be undone. (a) False (b) True
  9. 9.True or false: sawdust dissolves in water. (a) True (b) False
  10. 10.⚖️ 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 keep it the same (b) we change it (c) we measure it
  11. 11.True or false: warm water is needed for growing salt crystals. (a) False (b) True
  12. 12.🧂 Which of these dissolves in water? (a) baking soda (b) small pebbles (c) cooking oil (d) chalk powder
  13. 13.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) melting ice (c) rusting iron (d) milk turning to curd
  14. 14.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) turmeric powder (d) a spoon
  15. 15.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a magnet (c) a battery cell (d) salt
  16. 16.🔍 Which is the odd one out? (a) sawdust (b) baking soda (c) sand (d) chalk powder
  17. 17.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we measure it (b) we change it (c) we keep it the same
  18. 18.🔍 Which is the odd one out? (a) sugar (b) food colour (c) sawdust (d) table salt
  19. 19.⚖️ 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
  20. 20.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) water evaporates (c) the dish melts (d) salt eats water
  21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) a battery cell (d) a spoon
  22. 22.⚖️ 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 water (b) days to see crystals (c) the kind of salt (d) sunny or shady place
  23. 23.True or false: folding paper is a change that cannot be undone. (a) True (b) False
  24. 24.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
  25. 25.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
  26. 26.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
  27. 27.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
  28. 28.True or false: salt is not needed for growing salt crystals. (a) False (b) True
  29. 29.True or false: cooking an egg is a change that cannot be undone. (a) False (b) True
  30. 30.⚖️ 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 kind of salt
  31. 31.True or false: a magnet is needed for growing salt crystals. (a) False (b) True
  32. 32.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
  33. 33.🌊 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
  34. 34.True or false: melting ice is a change that cannot be undone. (a) True (b) False
  35. 35.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
  36. 36.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a spoon (c) a balloon (d) a mirror
  37. 37.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) freezing water (c) melting ice (d) cooking an egg
  38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a balloon (c) a piece of string (d) a spoon
  39. 39.🧂 Which of these dissolves in water? (a) sawdust (b) small pebbles (c) sand (d) food colour
  40. 40.True or false: yeast is needed for growing salt crystals. (a) False (b) True

Answer key

  1. table salt
  2. False
  3. warm water
  4. True
  5. needed
  6. cannot be undone
  7. a grown-up
  8. False
  9. False
  10. we change it
  11. True
  12. baking soda
  13. melting ice
  14. turmeric powder
  15. salt
  16. baking soda
  17. we keep it the same
  18. sawdust
  19. False
  20. water evaporates
  21. a battery cell
  22. days to see crystals
  23. False
  24. can be undone
  25. can be undone
  26. False
  27. can be undone
  28. False
  29. True
  30. the kind of salt
  31. False
  32. can be undone
  33. sea water evaporates
  34. False
  35. False
  36. a spoon
  37. cooking an egg
  38. a balloon
  39. food colour
  40. False

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