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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 804 · 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.⚖️ 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
  3. 3.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
  4. 4.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a shallow dish (c) a piece of string (d) a balloon
  5. 5.⚖️ 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 keep it the same (c) we change it
  6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) a spoon (c) salt (d) a shallow dish
  7. 7.True or false: rusting iron is a change that cannot be undone. (a) True (b) False
  8. 8.🛟 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
  9. 9.True or false: freezing water is a change that cannot be undone. (a) True (b) False
  10. 10.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) liquid crystals (c) no crystals (d) bigger crystals
  11. 11.True or false: a battery cell is needed for growing salt crystals. (a) False (b) True
  12. 12.🔍 Which is the odd one out? (a) glucose powder (b) sand (c) table salt (d) sugar
  13. 13.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
  14. 14.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
  15. 15.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is what we measure. (a) False (b) True
  16. 16.True or false: baking soda dissolves in water. (a) False (b) True
  17. 17.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
  18. 18.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) salt (c) a spoon (d) a magnet
  19. 19.True or false: melting butter is a change that cannot be undone. (a) True (b) False
  20. 20.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is the one thing we change. (a) False (b) True
  21. 21.True or false: sawdust does not dissolve in water. (a) False (b) True
  22. 22.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) turmeric powder (c) a shallow dish (d) a piece of string
  23. 23.⚖️ 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 amount of salt
  24. 24.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
  25. 25.True or false: food colour dissolves in water. (a) False (b) True
  26. 26.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
  27. 27.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a battery cell (c) warm water (d) a balloon
  28. 28.🧈 Which of these is a change that cannot be undone? (a) baking a cake (b) dissolving salt (c) melting butter (d) folding paper
  29. 29.True or false: melting ice is a change that cannot be undone. (a) True (b) False
  30. 30.🔍 Which is the odd one out? (a) sugar (b) baking soda (c) cooking oil (d) food colour
  31. 31.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
  32. 32.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
  33. 33.True or false: chalk powder dissolves in water. (a) True (b) False
  34. 34.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
  35. 35.🔍 Which is the odd one out? (a) small pebbles (b) sugar (c) cooking oil (d) chalk powder
  36. 36.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
  37. 37.True or false: baking soda does not dissolve in water. (a) True (b) False
  38. 38.🧂 Which of these does not dissolve in water? (a) baking soda (b) table salt (c) small pebbles (d) glucose powder
  39. 39.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False
  40. 40.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) turmeric powder (c) a shallow dish (d) a mirror

Answer key

  1. True
  2. the amount of water
  3. not needed
  4. a balloon
  5. we keep it the same
  6. a magnet
  7. True
  8. safe from small children
  9. False
  10. bigger crystals
  11. False
  12. sand
  13. dissolves in water
  14. cannot be undone
  15. False
  16. True
  17. can be undone
  18. a magnet
  19. False
  20. False
  21. True
  22. turmeric powder
  23. the amount of salt
  24. a grown-up
  25. True
  26. cannot be undone
  27. warm water
  28. baking a cake
  29. False
  30. cooking oil
  31. dissolves in water
  32. needed
  33. False
  34. does not dissolve
  35. sugar
  36. dissolves in water
  37. False
  38. small pebbles
  39. True
  40. a shallow dish

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