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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 560 · 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 magnet (b) a piece of string (c) warm water (d) salt
  2. 2.True or false: glucose powder does not dissolve in water. (a) False (b) True
  3. 3.True or false: turmeric powder is not needed for growing salt crystals. (a) True (b) False
  4. 4.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
  5. 5.🔍 Which is the odd one out? (a) chalk powder (b) cooking oil (c) glucose powder (d) small pebbles
  6. 6.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
  7. 7.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
  8. 8.True or false: sugar does not dissolve 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 kept the same? (a) the amount of water (b) sunny or shady place (c) days to see crystals
  10. 10.True or false: warm water is not needed for growing salt crystals. (a) False (b) True
  11. 11.🧂 Which of these does not dissolve in water? (a) small pebbles (b) baking soda (c) food colour (d) sugar
  12. 12.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) next to the baby (c) safe from small children (d) in a busy doorway
  13. 13.True or false: a battery cell is needed for growing salt crystals. (a) False (b) True
  14. 14.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
  15. 15.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) salt crystals form (c) it turns to oil (d) it turns to butter
  16. 16.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) turmeric powder (c) a magnet (d) yeast
  17. 17.True or false: sugar dissolves in water. (a) False (b) True
  18. 18.🧂 Which of these does not dissolve in water? (a) table salt (b) cooking oil (c) glucose powder (d) food colour
  19. 19.⚖️ 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
  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 keep it the same (b) we change it (c) we measure it
  21. 21.True or false: milk turning to curd is a change that can be undone. (a) False (b) True
  22. 22.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
  23. 23.True or false: sand does not dissolve in water. (a) False (b) True
  24. 24.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) rusting iron (c) folding paper (d) melting ice
  25. 25.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) it turns sweet (c) crystals grow faster (d) few or no crystals
  26. 26.🧂 Which of these does not dissolve in water? (a) glucose powder (b) baking soda (c) table salt (d) chalk powder
  27. 27.🧺 Which of these is not needed for growing salt crystals? (a) a mirror (b) a spoon (c) a shallow dish (d) salt
  28. 28.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny stars (c) tiny spheres (d) tiny cubes
  29. 29.⚖️ 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 keep it the same (b) we measure it (c) we change it
  30. 30.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a battery cell (c) a magnet (d) salt
  31. 31.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) bigger crystals (c) liquid crystals (d) smaller crystals
  32. 32.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
  33. 33.True or false: rusting iron is a change that can be undone. (a) True (b) False
  34. 34.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
  35. 35.True or false: freezing water is a change that can be undone. (a) True (b) False
  36. 36.⚖️ 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) True (b) False
  37. 37.🧺 Which of these is needed for growing salt crystals? (a) a shallow dish (b) yeast (c) a magnet (d) a mirror
  38. 38.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
  39. 39.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) magnetic (c) empty (d) frozen
  40. 40.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a magnet (c) yeast (d) a spoon

Answer key

  1. a magnet
  2. False
  3. True
  4. can be undone
  5. glucose powder
  6. does not dissolve
  7. can be undone
  8. False
  9. the amount of water
  10. False
  11. small pebbles
  12. safe from small children
  13. False
  14. does not dissolve
  15. sugar crystals form
  16. a piece of string
  17. True
  18. cooking oil
  19. False
  20. we change it
  21. False
  22. not needed
  23. True
  24. rusting iron
  25. few or no crystals
  26. chalk powder
  27. a mirror
  28. tiny cubes
  29. we keep it the same
  30. salt
  31. bigger crystals
  32. not needed
  33. False
  34. dissolves in water
  35. True
  36. True
  37. a shallow dish
  38. needed
  39. saturated
  40. a spoon

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