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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 883 · 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.True or false: a spoon is needed for growing salt crystals. (a) True (b) False
  2. 2.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
  3. 3.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the amount of water (b) sunny or shady place (c) days to see crystals
  4. 4.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a spoon (c) salt (d) a balloon
  5. 5.🔍 Which is the odd one out? (a) sand (b) sawdust (c) chalk powder (d) glucose powder
  6. 6.True or false: small pebbles does not dissolve in water. (a) True (b) False
  7. 7.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
  8. 8.🧂 Why do we stir in salt until no more will dissolve? (a) to cool the water (b) to make it fizz (c) to make it very salty (d) to change its colour
  9. 9.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the same dish (b) days to see crystals (c) sunny or shady place
  10. 10.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
  11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) days to see crystals (b) the same dish (c) the amount of water (d) the kind of salt
  12. 12.🧂 Which of these does not dissolve in water? (a) small pebbles (b) sugar (c) table salt (d) food colour
  13. 13.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a spoon (c) a piece of string (d) a mirror
  14. 14.True or false: salt is not needed for growing salt crystals. (a) False (b) True
  15. 15.⚖️ 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
  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 salt”? (a) we change it (b) we measure it (c) we keep it the same
  17. 17.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
  18. 18.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
  19. 19.True or false: a magnet is needed for growing salt crystals. (a) False (b) True
  20. 20.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
  21. 21.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
  22. 22.🔍 Which is the odd one out? (a) food colour (b) chalk powder (c) sugar (d) baking soda
  23. 23.🧈 Which of these is a change that can be undone? (a) baking a cake (b) dissolving salt (c) browning lemon ink (d) milk turning to curd
  24. 24.True or false: melting ice is a change that can be undone. (a) False (b) True
  25. 25.True or false: sugar dissolves in water. (a) False (b) True
  26. 26.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) freezing water (c) milk turning to curd (d) dissolving salt
  27. 27.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
  28. 28.True or false: cooking oil does not dissolve in water. (a) False (b) True
  29. 29.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) no crystals (c) bigger crystals (d) smaller crystals
  30. 30.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) saturated (c) magnetic (d) frozen
  31. 31.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a magnet (c) a spoon (d) a battery cell
  32. 32.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
  33. 33.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
  34. 34.True or false: baking a cake is a change that can be undone. (a) False (b) True
  35. 35.True or false: melting butter is a change that cannot be undone. (a) False (b) True
  36. 36.True or false: melting butter is a change that can be undone. (a) True (b) False
  37. 37.True or false: milk turning to curd is a change that cannot be undone. (a) False (b) True
  38. 38.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) turmeric powder (c) yeast (d) a shallow dish
  39. 39.🧂 Which of these dissolves in water? (a) cooking oil (b) sawdust (c) table salt (d) sand
  40. 40.🧺 Which of these is not needed for growing salt crystals? (a) a battery cell (b) a piece of string (c) a spoon (d) warm water

Answer key

  1. True
  2. a grown-up
  3. the amount of water
  4. a balloon
  5. glucose powder
  6. True
  7. needed
  8. to make it very salty
  9. the same dish
  10. can be undone
  11. days to see crystals
  12. small pebbles
  13. a mirror
  14. False
  15. we keep it the same
  16. we keep it the same
  17. does not dissolve
  18. can be undone
  19. False
  20. needed
  21. False
  22. chalk powder
  23. dissolving salt
  24. True
  25. True
  26. milk turning to curd
  27. True
  28. True
  29. bigger crystals
  30. saturated
  31. a spoon
  32. dissolves in water
  33. not needed
  34. False
  35. False
  36. True
  37. True
  38. a shallow dish
  39. table salt
  40. a battery cell

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