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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 853 · 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 is needed for growing salt crystals? (a) turmeric powder (b) a balloon (c) a mirror (d) warm water
  2. 2.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
  3. 3.🧂 Which of these does not dissolve in water? (a) table salt (b) food colour (c) chalk powder (d) sugar
  4. 4.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the same dish (b) the amount of salt (c) days to see crystals (d) sunny or shady place
  5. 5.True or false: sugar dissolves in water. (a) False (b) True
  6. 6.True or false: table salt does not dissolve in water. (a) True (b) False
  7. 7.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False
  8. 8.True or false: baking soda dissolves in water. (a) True (b) False
  9. 9.⚖️ 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 amount of salt (c) sunny or shady place (d) the same dish
  10. 10.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
  11. 11.🔍 Which is the odd one out? (a) chalk powder (b) small pebbles (c) sand (d) table salt
  12. 12.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
  13. 13.True or false: sawdust does not dissolve in water. (a) False (b) True
  14. 14.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is kept the same. (a) False (b) True
  15. 15.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
  16. 16.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
  17. 17.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
  18. 18.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a balloon (d) warm water
  19. 19.🔮 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
  20. 20.True or false: a battery cell is not needed for growing salt crystals. (a) True (b) False
  21. 21.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
  22. 22.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) turmeric powder (c) a piece of string (d) salt
  23. 23.🔍 Which is the odd one out? (a) table salt (b) sand (c) food colour (d) baking soda
  24. 24.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) water evaporates (c) the dish melts (d) salt eats water
  25. 25.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) smaller crystals (c) no crystals (d) liquid crystals
  26. 26.🧂 Which of these dissolves in water? (a) small pebbles (b) sand (c) sugar (d) sawdust
  27. 27.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) it turns to butter (c) salt crystals form (d) sugar crystals form
  28. 28.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) a magnet (d) warm water
  29. 29.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) folding paper (c) browning lemon ink (d) milk turning to curd
  30. 30.True or false: sugar does not dissolve in water. (a) True (b) False
  31. 31.🧈 Which of these is a change that cannot be undone? (a) milk turning to curd (b) freezing water (c) dissolving salt (d) melting ice
  32. 32.True or false: folding paper is a change that can be undone. (a) True (b) False
  33. 33.🧺 Which of these is not needed for growing salt crystals? (a) a magnet (b) a shallow dish (c) warm water (d) salt
  34. 34.⚖️ 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 measure it (b) we keep it the same (c) we change it
  35. 35.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
  36. 36.🧈 Which of these is a change that can be undone? (a) melting ice (b) baking a cake (c) browning lemon ink (d) milk turning to curd
  37. 37.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
  38. 38.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a spoon (c) a balloon (d) salt
  39. 39.True or false: a shallow dish is needed for growing salt crystals. (a) False (b) True
  40. 40.True or false: sand dissolves in water. (a) True (b) False

Answer key

  1. warm water
  2. does not dissolve
  3. chalk powder
  4. days to see crystals
  5. True
  6. False
  7. False
  8. True
  9. sunny or shady place
  10. not needed
  11. table salt
  12. not needed
  13. True
  14. False
  15. needed
  16. can be undone
  17. cannot be undone
  18. a balloon
  19. few or no crystals
  20. True
  21. can be undone
  22. turmeric powder
  23. sand
  24. water evaporates
  25. bigger crystals
  26. sugar
  27. sugar crystals form
  28. a magnet
  29. folding paper
  30. False
  31. milk turning to curd
  32. True
  33. a magnet
  34. we measure it
  35. can be undone
  36. melting ice
  37. False
  38. a balloon
  39. True
  40. False

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