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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 413 · 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.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
  2. 2.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
  3. 3.True or false: melting butter is a change that cannot be undone. (a) True (b) False
  4. 4.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) no crystals (c) liquid crystals (d) smaller crystals
  5. 5.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
  6. 6.🧂 Which of these dissolves in water? (a) small pebbles (b) glucose powder (c) chalk powder (d) sand
  7. 7.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
  8. 8.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a mirror (c) warm water (d) a balloon
  9. 9.True or false: sand does not dissolve in water. (a) False (b) True
  10. 10.🔍 Which is the odd one out? (a) cooking oil (b) sugar (c) sand (d) small pebbles
  11. 11.🧺 Which of these is not needed for growing salt crystals? (a) turmeric powder (b) salt (c) a piece of string (d) warm water
  12. 12.True or false: cooking oil does not dissolve in water. (a) True (b) False
  13. 13.True or false: sawdust does not dissolve in water. (a) False (b) True
  14. 14.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) milk turning to curd (c) dissolving salt (d) cooking an egg
  15. 15.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
  16. 16.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny spheres (c) tiny triangles (d) tiny stars
  17. 17.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
  18. 18.True or false: sand dissolves in water. (a) True (b) False
  19. 19.True or false: sawdust dissolves in water. (a) False (b) True
  20. 20.True or false: a spoon is needed for growing salt crystals. (a) True (b) False
  21. 21.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is what we measure. (a) False (b) True
  22. 22.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) melting ice (c) milk turning to curd (d) freezing water
  23. 23.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a magnet (c) a spoon (d) a shallow dish
  24. 24.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) salt (c) a shallow dish (d) a balloon
  25. 25.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) on the edge of a table (c) safe from small children (d) next to the baby
  26. 26.True or false: rusting iron is a change that can be undone. (a) True (b) False
  27. 27.⚖️ 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
  28. 28.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt grows roots (c) water evaporates (d) salt eats water
  29. 29.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) the amount of salt (b) the same dish (c) the kind of salt (d) sunny or shady place
  30. 30.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it turns sweet (c) crystals grow faster (d) it fizzes
  31. 31.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a balloon (c) a shallow dish (d) a mirror
  32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a magnet (c) a piece of string (d) warm water
  33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) True (b) False
  34. 34.True or false: milk turning to curd is a change that cannot be undone. (a) False (b) True
  35. 35.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we keep it the same (b) we change it (c) we measure it
  36. 36.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
  37. 37.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False
  38. 38.🔍 Which is the odd one out? (a) small pebbles (b) baking soda (c) food colour (d) table salt
  39. 39.True or false: warm water is needed for growing salt crystals. (a) True (b) False
  40. 40.True or false: dissolving salt is a change that can be undone. (a) False (b) True

Answer key

  1. can be undone
  2. False
  3. False
  4. bigger crystals
  5. needed
  6. glucose powder
  7. False
  8. warm water
  9. True
  10. sugar
  11. turmeric powder
  12. True
  13. True
  14. dissolving salt
  15. not needed
  16. tiny cubes
  17. cannot be undone
  18. False
  19. False
  20. True
  21. False
  22. milk turning to curd
  23. a magnet
  24. a balloon
  25. safe from small children
  26. False
  27. we keep it the same
  28. water evaporates
  29. sunny or shady place
  30. few or no crystals
  31. a shallow dish
  32. a magnet
  33. True
  34. True
  35. we keep it the same
  36. does not dissolve
  37. True
  38. small pebbles
  39. True
  40. True

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