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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 521 · 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.

NameDateTime takenScore ___ / 40
  1. 1.True or false: rusting iron is a change that cannot be undone. (a) False (b) True
  2. 2.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
  3. 3.True or false: rusting iron is a change that can be undone. (a) False (b) True
  4. 4.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a balloon (d) a spoon
  5. 5.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
  6. 6.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
  7. 7.🔍 Which is the odd one out? (a) food colour (b) glucose powder (c) cooking oil (d) baking soda
  8. 8.🛟 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
  9. 9.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
  10. 10.🔍 Which is the odd one out? (a) small pebbles (b) table salt (c) glucose powder (d) sugar
  11. 11.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
  12. 12.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny stars (c) tiny triangles (d) tiny spheres
  13. 13.True or false: warm water is needed for growing salt crystals. (a) False (b) True
  14. 14.True or false: cooking oil dissolves in water. (a) False (b) True
  15. 15.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a piece of string (c) salt (d) a balloon
  16. 16.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
  17. 17.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
  18. 18.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) browning lemon ink (c) melting ice (d) cooking an egg
  19. 19.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) empty (c) frozen (d) magnetic
  20. 20.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
  21. 21.⚖️ 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) True (b) False
  22. 22.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
  23. 23.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
  24. 24.True or false: turmeric powder is not needed for growing salt crystals. (a) False (b) True
  25. 25.True or false: a mirror is not needed for growing salt crystals. (a) True (b) False
  26. 26.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) turmeric powder (c) yeast (d) a shallow dish
  27. 27.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True
  28. 28.True or false: sand dissolves in water. (a) False (b) True
  29. 29.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) no crystals (c) liquid crystals (d) bigger crystals
  30. 30.True or false: melting butter is a change that cannot be undone. (a) True (b) False
  31. 31.⚖️ 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) the amount of water (b) sunny or shady place (c) the kind of salt (d) days to see crystals
  32. 32.⚖️ 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 change it (b) we measure it (c) we keep it the same
  33. 33.True or false: sugar does not dissolve in water. (a) True (b) False
  34. 34.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) turmeric powder (c) a shallow dish (d) a piece of string
  35. 35.⚖️ 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) True (b) False
  36. 36.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
  37. 37.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) sugar crystals form (c) salt crystals form (d) it turns to oil
  38. 38.🧂 Which of these does not dissolve in water? (a) baking soda (b) table salt (c) cooking oil (d) sugar
  39. 39.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
  40. 40.🧂 Which of these does not dissolve in water? (a) sugar (b) glucose powder (c) sand (d) baking soda

Answer key

  1. True
  2. dissolves in water
  3. False
  4. a balloon
  5. dissolves in water
  6. needed
  7. cooking oil
  8. a grown-up
  9. dissolves in water
  10. small pebbles
  11. not needed
  12. tiny cubes
  13. True
  14. False
  15. a balloon
  16. not needed
  17. does not dissolve
  18. melting ice
  19. saturated
  20. needed
  21. False
  22. can be undone
  23. does not dissolve
  24. True
  25. True
  26. a shallow dish
  27. True
  28. False
  29. bigger crystals
  30. False
  31. sunny or shady place
  32. we change it
  33. False
  34. turmeric powder
  35. False
  36. dissolves in water
  37. sugar crystals form
  38. cooking oil
  39. False
  40. sand

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