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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 903 · 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.

NameDateTime takenScore ___ / 40
  1. 1.⚖️ 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 change it (b) we measure it (c) we keep it the same
  2. 2.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it fizzes (c) few or no crystals (d) it turns sweet
  3. 3.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
  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) days to see crystals (b) sunny or shady place (c) the kind of salt
  5. 5.🧈 Which of these is a change that can be undone? (a) melting ice (b) baking a cake (c) rusting iron (d) cooking an egg
  6. 6.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
  7. 7.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
  8. 8.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
  9. 9.🧂 Which of these dissolves in water? (a) small pebbles (b) food colour (c) sand (d) sawdust
  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.🛟 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
  12. 12.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
  13. 13.🧂 Which of these does not dissolve in water? (a) baking soda (b) cooking oil (c) sugar (d) food colour
  14. 14.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
  15. 15.True or false: food colour dissolves in water. (a) True (b) False
  16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) salt (c) a magnet (d) a piece of string
  17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) a shallow dish (d) a mirror
  18. 18.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
  19. 19.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) sea water evaporates (c) salt rains down (d) fish make it
  20. 20.True or false: sand dissolves in water. (a) True (b) False
  21. 21.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
  22. 22.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
  23. 23.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny cubes (c) tiny stars (d) tiny triangles
  24. 24.True or false: sawdust dissolves in water. (a) True (b) False
  25. 25.True or false: melting ice is a change that cannot be undone. (a) True (b) False
  26. 26.True or false: folding paper is a change that cannot be undone. (a) True (b) False
  27. 27.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) warm water (c) a battery cell (d) a spoon
  28. 28.True or false: a mirror is not needed for growing salt crystals. (a) False (b) True
  29. 29.🧂 Which of these dissolves in water? (a) small pebbles (b) sand (c) chalk powder (d) table salt
  30. 30.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
  31. 31.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) False (b) True
  32. 32.🔍 Which is the odd one out? (a) table salt (b) sand (c) chalk powder (d) small pebbles
  33. 33.True or false: sugar dissolves in water. (a) True (b) False
  34. 34.⚖️ 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
  35. 35.True or false: chalk powder does not dissolve in water. (a) True (b) False
  36. 36.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
  37. 37.🧈 Which of these is a change that can be undone? (a) folding paper (b) baking a cake (c) cooking an egg (d) rusting iron
  38. 38.⚖️ 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) False (b) True
  39. 39.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a magnet (c) salt (d) a mirror
  40. 40.True or false: sand does not dissolve in water. (a) True (b) False

Answer key

  1. we keep it the same
  2. few or no crystals
  3. can be undone
  4. the kind of salt
  5. melting ice
  6. False
  7. cannot be undone
  8. needed
  9. food colour
  10. we change it
  11. a grown-up
  12. not needed
  13. cooking oil
  14. needed
  15. True
  16. a magnet
  17. a mirror
  18. can be undone
  19. sea water evaporates
  20. False
  21. not needed
  22. cannot be undone
  23. tiny cubes
  24. False
  25. False
  26. False
  27. a battery cell
  28. True
  29. table salt
  30. can be undone
  31. True
  32. table salt
  33. True
  34. we keep it the same
  35. True
  36. False
  37. folding paper
  38. True
  39. salt
  40. True

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