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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 784 · 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: milk turning to curd is a change that can be undone. (a) True (b) False
  2. 2.⚖️ 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
  3. 3.⚖️ 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 measure it (b) we keep it the same (c) we change it
  4. 4.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
  5. 5.True or false: freezing water is a change that can be undone. (a) True (b) False
  6. 6.🧂 Which of these dissolves in water? (a) sugar (b) chalk powder (c) sawdust (d) sand
  7. 7.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) False (b) True
  8. 8.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
  9. 9.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) dissolving salt (c) browning lemon ink (d) melting butter
  10. 10.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) saturated (c) empty (d) frozen
  11. 11.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
  12. 12.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
  13. 13.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) no crystals (c) bigger crystals (d) smaller crystals
  14. 14.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) in a busy doorway (c) next to the baby (d) on the edge of a table
  15. 15.True or false: warm water is needed for growing salt crystals. (a) True (b) False
  16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) salt (c) a shallow dish (d) warm water
  17. 17.⚖️ 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 keep it the same (c) we measure it
  18. 18.True or false: a magnet is not needed for growing salt crystals. (a) False (b) True
  19. 19.🔍 Which is the odd one out? (a) small pebbles (b) glucose powder (c) sand (d) cooking oil
  20. 20.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is the one thing we change. (a) True (b) False
  21. 21.🧂 Which of these dissolves in water? (a) cooking oil (b) small pebbles (c) sawdust (d) table salt
  22. 22.True or false: small pebbles does not dissolve in water. (a) False (b) True
  23. 23.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) milk turning to curd (c) baking a cake (d) dissolving salt
  24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a balloon (d) a spoon
  25. 25.True or false: dissolving salt is a change that cannot be undone. (a) False (b) True
  26. 26.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) warm water (c) salt (d) yeast
  27. 27.⚖️ 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 keep it the same (b) we measure it (c) we change it
  28. 28.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
  29. 29.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) rusting iron (c) folding paper (d) melting ice
  30. 30.True or false: folding paper is a change that can be undone. (a) False (b) True
  31. 31.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) dissolving salt (c) folding paper (d) baking a cake
  32. 32.🧈 Which of these is a change that can be undone? (a) folding paper (b) baking a cake (c) rusting iron (d) browning lemon ink
  33. 33.🔍 Which is the odd one out? (a) chalk powder (b) baking soda (c) small pebbles (d) sand
  34. 34.True or false: sawdust does not dissolve in water. (a) True (b) False
  35. 35.True or false: melting butter is a change that cannot be undone. (a) True (b) False
  36. 36.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
  37. 37.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) turmeric powder (c) salt (d) warm water
  38. 38.True or false: baking soda dissolves in water. (a) False (b) True
  39. 39.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
  40. 40.🧂 Which of these dissolves in water? (a) chalk powder (b) glucose powder (c) sand (d) small pebbles

Answer key

  1. False
  2. False
  3. we keep it the same
  4. can be undone
  5. True
  6. sugar
  7. False
  8. False
  9. browning lemon ink
  10. saturated
  11. can be undone
  12. not needed
  13. bigger crystals
  14. safe from small children
  15. True
  16. a mirror
  17. we keep it the same
  18. True
  19. glucose powder
  20. False
  21. table salt
  22. True
  23. dissolving salt
  24. a balloon
  25. False
  26. yeast
  27. we keep it the same
  28. not needed
  29. rusting iron
  30. True
  31. baking a cake
  32. folding paper
  33. baking soda
  34. True
  35. False
  36. not needed
  37. turmeric powder
  38. True
  39. does not dissolve
  40. glucose powder

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