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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 334 · 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.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we change it (b) we measure it (c) we keep it the same
  2. 2.True or false: sawdust does not dissolve in water. (a) True (b) False
  3. 3.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) in a busy doorway (c) on the edge of a table (d) safe from small children
  4. 4.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a battery cell (c) a spoon (d) a mirror
  5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) salt (c) a piece of string (d) warm water
  6. 6.🧂 Which of these dissolves in water? (a) cooking oil (b) glucose powder (c) sand (d) chalk powder
  7. 7.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
  8. 8.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
  9. 9.True or false: browning lemon ink is a change that cannot be undone. (a) False (b) True
  10. 10.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
  11. 11.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a spoon (c) a piece of string (d) a mirror
  12. 12.🧂 Which of these does not dissolve in water? (a) table salt (b) glucose powder (c) cooking oil (d) baking soda
  13. 13.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny spheres (c) tiny triangles (d) tiny cubes
  14. 14.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is what we measure. (a) True (b) False
  15. 15.🧂 Which of these does not dissolve in water? (a) sand (b) food colour (c) sugar (d) table salt
  16. 16.🧂 Which of these dissolves in water? (a) small pebbles (b) table salt (c) chalk powder (d) sawdust
  17. 17.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
  18. 18.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
  19. 19.True or false: yeast is needed for growing salt crystals. (a) True (b) False
  20. 20.True or false: freezing water is a change that cannot be undone. (a) False (b) True
  21. 21.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
  22. 22.🧂 Which of these does not dissolve in water? (a) baking soda (b) food colour (c) sawdust (d) sugar
  23. 23.⚖️ 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 water (c) days to see crystals (d) the amount of salt
  24. 24.⚖️ 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 salt (b) the amount of water (c) the same dish (d) sunny or shady place
  25. 25.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
  26. 26.True or false: chalk powder dissolves in water. (a) False (b) True
  27. 27.True or false: cooking oil dissolves in water. (a) True (b) False
  28. 28.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
  29. 29.⚖️ 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 measure it (b) we change it (c) we keep it the same
  30. 30.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) saturated (c) magnetic (d) frozen
  31. 31.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) sugar crystals form (c) salt crystals form (d) it turns to butter
  32. 32.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
  33. 33.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) bigger crystals (c) liquid crystals (d) no crystals
  34. 34.🔍 Which is the odd one out? (a) sugar (b) baking soda (c) small pebbles (d) glucose powder
  35. 35.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
  36. 36.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
  37. 37.🔍 Which is the odd one out? (a) sand (b) sawdust (c) small pebbles (d) glucose powder
  38. 38.🌊 How is salt made in salt pans by the sea? (a) sea water evaporates (b) sand is ground up (c) fish make it (d) salt rains down
  39. 39.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a piece of string (c) a balloon (d) yeast
  40. 40.🧂 Which of these dissolves in water? (a) cooking oil (b) chalk powder (c) sugar (d) sand

Answer key

  1. we keep it the same
  2. True
  3. safe from small children
  4. a spoon
  5. a magnet
  6. glucose powder
  7. dissolves in water
  8. not needed
  9. True
  10. False
  11. a mirror
  12. cooking oil
  13. tiny cubes
  14. False
  15. sand
  16. table salt
  17. a grown-up
  18. False
  19. False
  20. False
  21. needed
  22. sawdust
  23. days to see crystals
  24. sunny or shady place
  25. False
  26. False
  27. False
  28. dissolves in water
  29. we keep it the same
  30. saturated
  31. sugar crystals form
  32. dissolves in water
  33. bigger crystals
  34. small pebbles
  35. needed
  36. cannot be undone
  37. glucose powder
  38. sea water evaporates
  39. a piece of string
  40. sugar

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