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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 337 · 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.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) safe from small children (c) next to the baby (d) in a busy doorway
  2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) yeast (b) warm water (c) a shallow dish (d) salt
  3. 3.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) sand is ground up (c) sea water evaporates (d) salt rains down
  4. 4.True or false: salt is not needed for growing salt crystals. (a) False (b) True
  5. 5.True or false: glucose powder does not dissolve in water. (a) True (b) False
  6. 6.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
  7. 7.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
  8. 8.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
  9. 9.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
  10. 10.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
  11. 11.True or false: folding paper is a change that can be undone. (a) True (b) False
  12. 12.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
  13. 13.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
  14. 14.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
  15. 15.🔍 Which is the odd one out? (a) sugar (b) food colour (c) chalk powder (d) table salt
  16. 16.🔍 Which is the odd one out? (a) food colour (b) glucose powder (c) cooking oil (d) table salt
  17. 17.True or false: dissolving salt is a change that can be undone. (a) False (b) True
  18. 18.True or false: cooking oil does not dissolve in water. (a) False (b) True
  19. 19.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) salt (c) a battery cell (d) a spoon
  20. 20.⚖️ 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 keep it the same (c) we change it
  21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) a mirror (d) a piece of string
  22. 22.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to oil (c) salt crystals form (d) it turns to butter
  23. 23.🔍 Which is the odd one out? (a) food colour (b) sugar (c) sand (d) table salt
  24. 24.True or false: sawdust does not dissolve in water. (a) True (b) False
  25. 25.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
  26. 26.True or false: chalk powder dissolves in water. (a) False (b) True
  27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is what we measure. (a) False (b) True
  28. 28.🧂 Which of these does not dissolve in water? (a) sugar (b) sand (c) table salt (d) baking soda
  29. 29.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
  30. 30.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) smaller crystals (c) liquid crystals (d) no crystals
  31. 31.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) yeast (c) a magnet (d) salt
  32. 32.True or false: chalk powder does not dissolve in water. (a) True (b) False
  33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) False (b) True
  34. 34.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) warm water (d) a magnet
  35. 35.🔍 Which is the odd one out? (a) glucose powder (b) food colour (c) sugar (d) small pebbles
  36. 36.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) days to see crystals (b) the same dish (c) sunny or shady place (d) the amount of salt
  37. 37.🧈 Which of these is a change that cannot be undone? (a) milk turning to curd (b) melting butter (c) melting ice (d) freezing water
  38. 38.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
  39. 39.⚖️ 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 keep it the same (b) we measure it (c) we change it
  40. 40.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed

Answer key

  1. safe from small children
  2. yeast
  3. sea water evaporates
  4. False
  5. False
  6. cannot be undone
  7. needed
  8. a grown-up
  9. does not dissolve
  10. False
  11. True
  12. can be undone
  13. cannot be undone
  14. needed
  15. chalk powder
  16. cooking oil
  17. True
  18. True
  19. a battery cell
  20. we change it
  21. a mirror
  22. sugar crystals form
  23. sand
  24. True
  25. dissolves in water
  26. False
  27. False
  28. sand
  29. cannot be undone
  30. bigger crystals
  31. salt
  32. True
  33. True
  34. a magnet
  35. small pebbles
  36. sunny or shady place
  37. milk turning to curd
  38. False
  39. we keep it the same
  40. needed

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