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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 76 · 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.True or false: rusting iron is a change that can be undone. (a) True (b) False
  2. 2.True or false: melting butter is a change that cannot be undone. (a) True (b) False
  3. 3.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
  4. 4.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a piece of string (c) a battery cell (d) warm water
  5. 5.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False
  6. 6.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
  7. 7.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a mirror (c) a spoon (d) salt
  8. 8.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
  9. 9.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
  10. 10.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) yeast (c) a piece of string (d) a magnet
  11. 11.🔍 Which is the odd one out? (a) chalk powder (b) table salt (c) sugar (d) baking soda
  12. 12.True or false: melting ice is a change that cannot be undone. (a) False (b) True
  13. 13.True or false: cooking oil does not dissolve in water. (a) False (b) True
  14. 14.🔍 Which is the odd one out? (a) small pebbles (b) sawdust (c) cooking oil (d) table salt
  15. 15.🧂 Which of these does not dissolve in water? (a) table salt (b) sugar (c) food colour (d) sawdust
  16. 16.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
  17. 17.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) sugar crystals form (c) it turns to butter (d) salt crystals form
  18. 18.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) next to the baby (c) safe from small children (d) in a busy doorway
  19. 19.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a piece of string (c) salt (d) a magnet
  20. 20.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we change it (b) we keep it the same (c) we measure it
  21. 21.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) it fizzes (c) few or no crystals (d) crystals grow faster
  22. 22.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
  23. 23.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
  24. 24.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
  25. 25.🧂 Which of these does not dissolve in water? (a) food colour (b) table salt (c) sugar (d) small pebbles
  26. 26.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
  27. 27.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
  28. 28.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny triangles (c) tiny stars (d) tiny spheres
  29. 29.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
  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) days to see crystals (b) sunny or shady place (c) the amount of salt
  31. 31.True or false: freezing water is a change that can be undone. (a) False (b) True
  32. 32.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
  33. 33.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
  34. 34.True or false: a balloon is needed for growing salt crystals. (a) False (b) True
  35. 35.🧺 Which of these is not needed for growing salt crystals? (a) a battery cell (b) salt (c) a piece of string (d) a shallow dish
  36. 36.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) warm water (c) salt (d) turmeric powder
  37. 37.True or false: browning lemon ink is a change that can be undone. (a) True (b) False
  38. 38.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
  39. 39.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a spoon (c) a piece of string (d) a magnet
  40. 40.🧂 Which of these does not dissolve in water? (a) glucose powder (b) table salt (c) sugar (d) sand

Answer key

  1. False
  2. False
  3. cannot be undone
  4. a battery cell
  5. True
  6. does not dissolve
  7. a mirror
  8. True
  9. not needed
  10. a piece of string
  11. chalk powder
  12. False
  13. True
  14. table salt
  15. sawdust
  16. we keep it the same
  17. sugar crystals form
  18. safe from small children
  19. a magnet
  20. we measure it
  21. few or no crystals
  22. needed
  23. a grown-up
  24. does not dissolve
  25. small pebbles
  26. can be undone
  27. does not dissolve
  28. tiny cubes
  29. cannot be undone
  30. the amount of salt
  31. True
  32. dissolves in water
  33. False
  34. False
  35. a battery cell
  36. turmeric powder
  37. False
  38. True
  39. a magnet
  40. sand

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