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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 702 · 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.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
  2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) a mirror (d) salt
  3. 3.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) empty (c) frozen (d) magnetic
  4. 4.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) yeast (c) warm water (d) a shallow dish
  5. 5.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
  6. 6.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we keep it the same (b) we measure it (c) we change it
  7. 7.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) False (b) True
  8. 8.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
  9. 9.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it turns sweet (c) crystals grow faster (d) it fizzes
  10. 10.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
  11. 11.True or false: food colour does not dissolve in water. (a) False (b) True
  12. 12.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) salt (c) a spoon (d) warm water
  13. 13.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
  14. 14.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
  15. 15.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
  16. 16.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a battery cell (c) a piece of string (d) salt
  17. 17.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a shallow dish (c) a spoon (d) a balloon
  18. 18.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) freezing water (c) cooking an egg (d) melting butter
  19. 19.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
  20. 20.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
  21. 21.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) False (b) True
  22. 22.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
  23. 23.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
  24. 24.True or false: rusting iron is a change that cannot be undone. (a) False (b) True
  25. 25.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
  26. 26.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) the dish melts (c) water evaporates (d) salt grows roots
  27. 27.True or false: folding paper is a change that cannot be undone. (a) False (b) True
  28. 28.True or false: melting butter is a change that cannot be undone. (a) False (b) True
  29. 29.🧂 Which of these dissolves in water? (a) cooking oil (b) sand (c) sawdust (d) glucose powder
  30. 30.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
  31. 31.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) yeast (c) a magnet (d) turmeric powder
  32. 32.⚖️ 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 change it (b) we keep it the same (c) we measure it
  33. 33.True or false: melting butter is a change that can be undone. (a) False (b) True
  34. 34.True or false: food colour dissolves in water. (a) False (b) True
  35. 35.⚖️ 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
  36. 36.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a piece of string (c) a magnet (d) warm water
  37. 37.True or false: yeast is needed for growing salt crystals. (a) False (b) True
  38. 38.True or false: yeast is not needed for growing salt crystals. (a) True (b) False
  39. 39.True or false: sugar does not dissolve in water. (a) False (b) True
  40. 40.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) True (b) False

Answer key

  1. needed
  2. a mirror
  3. saturated
  4. yeast
  5. a grown-up
  6. we measure it
  7. False
  8. dissolves in water
  9. few or no crystals
  10. needed
  11. False
  12. a battery cell
  13. needed
  14. dissolves in water
  15. needed
  16. a battery cell
  17. a balloon
  18. cooking an egg
  19. cannot be undone
  20. can be undone
  21. True
  22. needed
  23. False
  24. True
  25. cannot be undone
  26. water evaporates
  27. False
  28. False
  29. glucose powder
  30. not needed
  31. a piece of string
  32. we keep it the same
  33. True
  34. True
  35. we keep it the same
  36. a magnet
  37. False
  38. True
  39. False
  40. True

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