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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 480 · 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.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
  2. 2.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) it turns to butter (c) sugar crystals form (d) salt crystals form
  3. 3.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) turmeric powder (c) a piece of string (d) warm water
  4. 4.True or false: a mirror is not needed for growing salt crystals. (a) False (b) True
  5. 5.🔍 Which is the odd one out? (a) chalk powder (b) table salt (c) sawdust (d) sand
  6. 6.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is what we measure. (a) False (b) True
  7. 7.True or false: dissolving salt is a change that cannot be undone. (a) False (b) True
  8. 8.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
  9. 9.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
  10. 10.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny stars (c) tiny cubes (d) tiny spheres
  11. 11.⚖️ 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
  12. 12.⚖️ 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 same dish (b) the kind of salt (c) the amount of salt (d) sunny or shady place
  13. 13.🧂 Which of these dissolves in water? (a) glucose powder (b) small pebbles (c) chalk powder (d) cooking oil
  14. 14.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
  15. 15.True or false: a battery cell is not needed for growing salt crystals. (a) True (b) False
  16. 16.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it turns sweet (c) it fizzes (d) few or no crystals
  17. 17.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
  18. 18.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
  19. 19.True or false: sand does not dissolve in water. (a) False (b) True
  20. 20.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
  21. 21.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
  22. 22.🧂 Which of these does not dissolve in water? (a) table salt (b) baking soda (c) glucose powder (d) cooking oil
  23. 23.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
  24. 24.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) baking a cake (c) browning lemon ink (d) folding paper
  25. 25.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is the one thing we change. (a) True (b) False
  26. 26.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
  27. 27.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
  28. 28.True or false: glucose powder dissolves in water. (a) False (b) True
  29. 29.True or false: a piece of string is needed for growing salt crystals. (a) True (b) False
  30. 30.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a magnet (c) a spoon (d) warm water
  31. 31.True or false: baking a cake is a change that can be undone. (a) True (b) False
  32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a shallow dish (d) a battery cell
  33. 33.🔍 Which is the odd one out? (a) table salt (b) sand (c) sugar (d) food colour
  34. 34.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) yeast (c) a piece of string (d) warm water
  35. 35.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) next to the baby (c) on the edge of a table (d) safe from small children
  36. 36.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is the one thing we change. (a) True (b) False
  37. 37.🌊 How is salt made in salt pans by the sea? (a) sea water evaporates (b) salt rains down (c) sand is ground up (d) fish make it
  38. 38.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
  39. 39.🧈 Which of these is a change that can be undone? (a) dissolving salt (b) cooking an egg (c) milk turning to curd (d) baking a cake
  40. 40.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed

Answer key

  1. needed
  2. sugar crystals form
  3. turmeric powder
  4. True
  5. table salt
  6. True
  7. False
  8. dissolves in water
  9. does not dissolve
  10. tiny cubes
  11. True
  12. sunny or shady place
  13. glucose powder
  14. needed
  15. True
  16. few or no crystals
  17. not needed
  18. does not dissolve
  19. True
  20. needed
  21. can be undone
  22. cooking oil
  23. dissolves in water
  24. folding paper
  25. False
  26. dissolves in water
  27. cannot be undone
  28. True
  29. True
  30. a magnet
  31. False
  32. a battery cell
  33. sand
  34. yeast
  35. safe from small children
  36. False
  37. sea water evaporates
  38. does not dissolve
  39. dissolving salt
  40. not needed

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