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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 96 · 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.🧂 Which of these dissolves in water? (a) sand (b) small pebbles (c) sugar (d) cooking oil
  2. 2.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
  3. 3.True or false: cooking oil does not dissolve in water. (a) True (b) False
  4. 4.True or false: sugar does not dissolve in water. (a) True (b) False
  5. 5.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
  6. 6.⚖️ 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 measure it (b) we keep it the same (c) we change it
  7. 7.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
  8. 8.True or false: yeast is not needed for growing salt crystals. (a) True (b) False
  9. 9.True or false: turmeric powder is needed for growing salt crystals. (a) False (b) True
  10. 10.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a piece of string (d) a magnet
  11. 11.🧈 Which of these is a change that can be undone? (a) baking a cake (b) dissolving salt (c) rusting iron (d) browning lemon ink
  12. 12.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a battery cell (c) a piece of string (d) turmeric powder
  13. 13.True or false: dissolving salt is a change that can be undone. (a) False (b) True
  14. 14.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) on the edge of a table (c) in a busy doorway (d) next to the baby
  15. 15.True or false: a battery cell is not needed for growing salt crystals. (a) True (b) False
  16. 16.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
  17. 17.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
  18. 18.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) yeast (c) a shallow dish (d) a piece of string
  19. 19.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
  20. 20.⚖️ 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 keep it the same (c) we change it
  21. 21.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
  22. 22.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) bigger crystals (c) no crystals (d) smaller crystals
  23. 23.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
  24. 24.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) few or no crystals (c) it fizzes (d) crystals grow faster
  25. 25.🧂 Which of these does not dissolve in water? (a) glucose powder (b) sugar (c) cooking oil (d) baking soda
  26. 26.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) milk turning to curd (c) folding paper (d) cooking an egg
  27. 27.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
  28. 28.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is what we measure. (a) False (b) True
  29. 29.True or false: salt is needed for growing salt crystals. (a) False (b) True
  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) sunny or shady place (b) days to see crystals (c) the same dish
  31. 31.🔍 Which is the odd one out? (a) glucose powder (b) chalk powder (c) cooking oil (d) sand
  32. 32.⚖️ 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 salt (b) sunny or shady place (c) days to see crystals
  33. 33.True or false: sawdust dissolves in water. (a) False (b) True
  34. 34.⚖️ 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 measure it (b) we change it (c) we keep it the same
  35. 35.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
  36. 36.🧈 Which of these is a change that can be undone? (a) rusting iron (b) melting butter (c) baking a cake (d) milk turning to curd
  37. 37.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
  38. 38.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
  39. 39.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
  40. 40.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone

Answer key

  1. sugar
  2. needed
  3. True
  4. False
  5. False
  6. we keep it the same
  7. not needed
  8. True
  9. False
  10. a magnet
  11. dissolving salt
  12. a piece of string
  13. True
  14. safe from small children
  15. True
  16. needed
  17. needed
  18. yeast
  19. does not dissolve
  20. we keep it the same
  21. cannot be undone
  22. bigger crystals
  23. False
  24. few or no crystals
  25. cooking oil
  26. folding paper
  27. False
  28. False
  29. True
  30. the same dish
  31. glucose powder
  32. the amount of salt
  33. False
  34. we change it
  35. needed
  36. melting butter
  37. False
  38. dissolves in water
  39. a grown-up
  40. cannot be undone

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