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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 237 · 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.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) a piece of string (c) salt (d) a spoon
  2. 2.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
  3. 3.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a piece of string (c) a magnet (d) a shallow dish
  4. 4.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a magnet (c) a spoon (d) a piece of string
  5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) salt (c) a shallow dish (d) a spoon
  6. 6.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) dissolving salt (c) folding paper (d) milk turning to curd
  7. 7.True or false: a mirror is needed for growing salt crystals. (a) False (b) True
  8. 8.⚖️ 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 change it (b) we keep it the same (c) we measure it
  9. 9.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it turns sweet (c) few or no crystals (d) it fizzes
  10. 10.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) smaller crystals (c) no crystals (d) bigger crystals
  11. 11.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
  12. 12.True or false: small pebbles does not dissolve in water. (a) True (b) False
  13. 13.True or false: folding paper is a change that can be undone. (a) True (b) False
  14. 14.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) warm water (c) yeast (d) a magnet
  15. 15.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True
  16. 16.True or false: melting butter is a change that cannot be undone. (a) True (b) False
  17. 17.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
  18. 18.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) cooking an egg (c) melting butter (d) dissolving salt
  19. 19.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
  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 change it (c) we keep it the same
  21. 21.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
  22. 22.True or false: sawdust dissolves in water. (a) True (b) False
  23. 23.True or false: salt is needed for growing salt crystals. (a) True (b) False
  24. 24.🔍 Which is the odd one out? (a) baking soda (b) chalk powder (c) sugar (d) table salt
  25. 25.⚖️ 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
  26. 26.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
  27. 27.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
  28. 28.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
  29. 29.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a magnet (c) a battery cell (d) a shallow dish
  30. 30.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) True (b) False
  31. 31.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) turmeric powder (c) yeast (d) a piece of string
  32. 32.True or false: freezing water is a change that can be undone. (a) True (b) False
  33. 33.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
  34. 34.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
  35. 35.True or false: chalk powder dissolves in water. (a) True (b) False
  36. 36.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
  37. 37.🧺 Which of these is needed for growing salt crystals? (a) salt (b) a mirror (c) a magnet (d) yeast
  38. 38.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) on the edge of a table (c) safe from small children (d) in a busy doorway
  39. 39.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) yeast (b) a shallow dish (c) a piece of string (d) warm water
  40. 40.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water

Answer key

  1. a mirror
  2. not needed
  3. a magnet
  4. a magnet
  5. a battery cell
  6. milk turning to curd
  7. False
  8. we measure it
  9. few or no crystals
  10. bigger crystals
  11. needed
  12. True
  13. True
  14. warm water
  15. True
  16. False
  17. can be undone
  18. cooking an egg
  19. False
  20. we keep it the same
  21. does not dissolve
  22. False
  23. True
  24. chalk powder
  25. True
  26. not needed
  27. False
  28. a grown-up
  29. a shallow dish
  30. True
  31. a piece of string
  32. True
  33. cannot be undone
  34. can be undone
  35. False
  36. dissolves in water
  37. salt
  38. safe from small children
  39. yeast
  40. dissolves in water

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