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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 648 · 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.True or false: a magnet is not needed for growing salt crystals. (a) True (b) False
  2. 2.True or false: glucose powder does not dissolve in water. (a) True (b) False
  3. 3.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a spoon (c) a piece of string (d) a balloon
  4. 4.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
  5. 5.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) True (b) False
  6. 6.True or false: melting ice is a change that can be undone. (a) True (b) False
  7. 7.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
  8. 8.⚖️ 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 keep it the same (b) we measure it (c) we change it
  9. 9.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
  10. 10.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
  11. 11.🔍 Which is the odd one out? (a) cooking oil (b) chalk powder (c) table salt (d) small pebbles
  12. 12.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) rusting iron (c) freezing water (d) folding paper
  13. 13.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
  14. 14.⚖️ 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 change it (b) we keep it the same (c) we measure it
  15. 15.🧂 Why do we stir in salt until no more will dissolve? (a) to change its colour (b) to make it fizz (c) to cool the water (d) to make it very salty
  16. 16.🔍 Which is the odd one out? (a) glucose powder (b) sugar (c) table salt (d) sand
  17. 17.⚖️ 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
  18. 18.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) rusting iron (c) baking a cake (d) melting ice
  19. 19.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
  20. 20.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a piece of string (c) warm water (d) a magnet
  21. 21.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
  22. 22.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) salt rains down (c) fish make it (d) sea water evaporates
  23. 23.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
  24. 24.🔍 Which is the odd one out? (a) sawdust (b) cooking oil (c) sand (d) glucose powder
  25. 25.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) a battery cell (c) yeast (d) turmeric powder
  26. 26.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a shallow dish (c) warm water (d) a battery cell
  27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) a spoon (c) a shallow dish (d) salt
  28. 28.True or false: sand dissolves in water. (a) False (b) True
  29. 29.🔍 Which is the odd one out? (a) chalk powder (b) food colour (c) table salt (d) sugar
  30. 30.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
  31. 31.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
  32. 32.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) sunny or shady place (b) the amount of salt (c) the same dish (d) days to see crystals
  33. 33.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
  34. 34.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
  35. 35.True or false: a shallow dish is needed for growing salt crystals. (a) False (b) True
  36. 36.True or false: melting butter is a change that can be undone. (a) False (b) True
  37. 37.True or false: folding paper is a change that can be undone. (a) True (b) False
  38. 38.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt grows roots (c) water evaporates (d) salt eats water
  39. 39.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny stars (c) tiny cubes (d) tiny spheres
  40. 40.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child

Answer key

  1. True
  2. False
  3. a balloon
  4. can be undone
  5. True
  6. True
  7. does not dissolve
  8. we keep it the same
  9. dissolves in water
  10. does not dissolve
  11. table salt
  12. rusting iron
  13. False
  14. we keep it the same
  15. to make it very salty
  16. sand
  17. we keep it the same
  18. melting ice
  19. not needed
  20. a magnet
  21. does not dissolve
  22. sea water evaporates
  23. needed
  24. glucose powder
  25. a piece of string
  26. a battery cell
  27. a magnet
  28. False
  29. chalk powder
  30. needed
  31. can be undone
  32. days to see crystals
  33. cannot be undone
  34. cannot be undone
  35. True
  36. True
  37. True
  38. water evaporates
  39. tiny cubes
  40. a grown-up

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