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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 518 · 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.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) bigger crystals (c) smaller crystals (d) liquid crystals
  2. 2.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) warm water (c) a spoon (d) a magnet
  3. 3.True or false: melting ice is a change that can be undone. (a) True (b) False
  4. 4.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
  5. 5.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
  6. 6.True or false: a mirror is not needed for growing salt crystals. (a) False (b) True
  7. 7.🔍 Which is the odd one out? (a) small pebbles (b) table salt (c) sawdust (d) cooking oil
  8. 8.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) yeast (c) a spoon (d) turmeric powder
  9. 9.🔍 Which is the odd one out? (a) baking soda (b) sand (c) table salt (d) sugar
  10. 10.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
  11. 11.True or false: cooking oil dissolves in water. (a) False (b) True
  12. 12.🔍 Which is the odd one out? (a) sawdust (b) cooking oil (c) small pebbles (d) sugar
  13. 13.⚖️ 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
  14. 14.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a battery cell (c) warm water (d) a piece of string
  15. 15.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) in a busy doorway (c) safe from small children (d) on the edge of a table
  16. 16.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
  17. 17.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
  18. 18.True or false: salt is needed for growing salt crystals. (a) False (b) True
  19. 19.True or false: baking soda does not dissolve in water. (a) True (b) False
  20. 20.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
  21. 21.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
  22. 22.🧂 Which of these dissolves in water? (a) table salt (b) small pebbles (c) cooking oil (d) sand
  23. 23.⚖️ 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 measure it (b) we change it (c) we keep it the same
  24. 24.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
  25. 25.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) magnetic (c) saturated (d) frozen
  26. 26.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) freezing water (c) dissolving salt (d) baking a cake
  27. 27.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) warm water (c) a balloon (d) a piece of string
  28. 28.⚖️ 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) sunny or shady place (b) the kind of salt (c) the same dish (d) the amount of salt
  29. 29.True or false: food colour dissolves in water. (a) False (b) True
  30. 30.True or false: turmeric powder is not needed for growing salt crystals. (a) False (b) True
  31. 31.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
  32. 32.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
  33. 33.🔍 Which is the odd one out? (a) glucose powder (b) small pebbles (c) baking soda (d) table salt
  34. 34.⚖️ 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 measure it (c) we change it
  35. 35.⚖️ 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
  36. 36.🧺 Do we need a mirror 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? True or false: the kind of salt is the one thing we change. (a) False (b) True
  38. 38.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
  39. 39.True or false: chalk powder dissolves in water. (a) False (b) True
  40. 40.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny cubes (c) tiny stars (d) tiny spheres

Answer key

  1. bigger crystals
  2. a magnet
  3. True
  4. False
  5. a grown-up
  6. True
  7. table salt
  8. a spoon
  9. sand
  10. does not dissolve
  11. False
  12. sugar
  13. we change it
  14. a battery cell
  15. safe from small children
  16. needed
  17. cannot be undone
  18. True
  19. False
  20. can be undone
  21. False
  22. table salt
  23. we keep it the same
  24. False
  25. saturated
  26. baking a cake
  27. a balloon
  28. sunny or shady place
  29. True
  30. True
  31. can be undone
  32. can be undone
  33. small pebbles
  34. we keep it the same
  35. True
  36. not needed
  37. False
  38. dissolves in water
  39. False
  40. tiny cubes

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