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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 50 · 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) in a busy doorway (c) safe from small children (d) next to the baby
  2. 2.🔍 Which is the odd one out? (a) small pebbles (b) sand (c) sugar (d) sawdust
  3. 3.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
  4. 4.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) warm water (c) salt (d) a balloon
  5. 5.True or false: cooking oil dissolves in water. (a) True (b) False
  6. 6.True or false: a mirror is not needed for growing salt crystals. (a) False (b) True
  7. 7.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) a shallow dish (c) a piece of string (d) a spoon
  8. 8.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a balloon (c) a mirror (d) a shallow dish
  9. 9.🔍 Which is the odd one out? (a) table salt (b) cooking oil (c) glucose powder (d) baking soda
  10. 10.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) True (b) False
  11. 11.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) salt (c) a mirror (d) a battery cell
  12. 12.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
  13. 13.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
  14. 14.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) dissolving salt (c) cooking an egg (d) melting ice
  15. 15.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
  16. 16.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) sand is ground up (c) sea water evaporates (d) fish make it
  17. 17.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
  18. 18.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
  19. 19.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a shallow dish (c) a spoon (d) a battery cell
  20. 20.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
  21. 21.🔍 Which is the odd one out? (a) chalk powder (b) sawdust (c) cooking oil (d) glucose powder
  22. 22.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
  23. 23.🧂 Why do we stir in salt until no more will dissolve? (a) to make it fizz (b) to change its colour (c) to make it very salty (d) to cool the water
  24. 24.⚖️ 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
  25. 25.⚖️ 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 keep it the same (c) we measure it
  26. 26.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
  27. 27.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
  28. 28.True or false: baking a cake is a change that can be undone. (a) False (b) True
  29. 29.True or false: melting butter is a change that cannot be undone. (a) True (b) False
  30. 30.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
  31. 31.True or false: salt is needed for growing salt crystals. (a) True (b) False
  32. 32.🧂 Which of these does not dissolve in water? (a) baking soda (b) table salt (c) sand (d) food colour
  33. 33.⚖️ 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 amount of salt (b) the amount of water (c) days to see crystals (d) the same dish
  34. 34.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a spoon (c) a balloon (d) warm water
  35. 35.True or false: dissolving salt is a change that cannot be undone. (a) False (b) True
  36. 36.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) magnetic (c) saturated (d) empty
  37. 37.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a piece of string (c) a mirror (d) a shallow dish
  38. 38.True or false: sawdust dissolves in water. (a) True (b) False
  39. 39.True or false: rusting iron is a change that cannot be undone. (a) False (b) True
  40. 40.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) False (b) True

Answer key

  1. safe from small children
  2. sugar
  3. not needed
  4. a balloon
  5. False
  6. True
  7. turmeric powder
  8. a shallow dish
  9. cooking oil
  10. True
  11. salt
  12. can be undone
  13. does not dissolve
  14. cooking an egg
  15. dissolves in water
  16. sea water evaporates
  17. does not dissolve
  18. dissolves in water
  19. a battery cell
  20. can be undone
  21. glucose powder
  22. not needed
  23. to make it very salty
  24. we change it
  25. we keep it the same
  26. needed
  27. cannot be undone
  28. False
  29. False
  30. does not dissolve
  31. True
  32. sand
  33. days to see crystals
  34. a balloon
  35. False
  36. saturated
  37. a mirror
  38. False
  39. True
  40. False

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