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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 422 · 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.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
  2. 2.True or false: glucose powder does not dissolve in water. (a) True (b) False
  3. 3.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny spheres (c) tiny cubes (d) tiny stars
  4. 4.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) liquid crystals (c) bigger crystals (d) smaller crystals
  5. 5.⚖️ 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 kind of salt (c) days to see crystals (d) the amount of water
  6. 6.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a mirror (c) turmeric powder (d) a spoon
  7. 7.⚖️ 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
  8. 8.⚖️ 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) the kind of salt (c) sunny or shady place (d) days to see crystals
  9. 9.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) on the edge of a table (c) next to the baby (d) safe from small children
  10. 10.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) salt (c) a magnet (d) a shallow dish
  11. 11.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
  12. 12.⚖️ 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 measure it (b) we change it (c) we keep it the same
  13. 13.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) a piece of string (d) a magnet
  14. 14.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
  15. 15.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) a balloon (d) a shallow dish
  16. 16.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
  17. 17.True or false: baking soda does not dissolve in water. (a) False (b) True
  18. 18.True or false: salt is needed for growing salt crystals. (a) True (b) False
  19. 19.🔍 Which is the odd one out? (a) glucose powder (b) table salt (c) food colour (d) chalk powder
  20. 20.True or false: small pebbles does not dissolve in water. (a) True (b) False
  21. 21.True or false: salt is not needed for growing salt crystals. (a) True (b) False
  22. 22.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) browning lemon ink (c) folding paper (d) baking a cake
  23. 23.🧂 Which of these dissolves in water? (a) small pebbles (b) cooking oil (c) sugar (d) chalk powder
  24. 24.🔍 Which is the odd one out? (a) cooking oil (b) sugar (c) sawdust (d) chalk powder
  25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a battery cell (c) a spoon (d) a piece of string
  26. 26.True or false: melting ice is a change that cannot be undone. (a) False (b) True
  27. 27.True or false: dissolving salt is a change that can be undone. (a) True (b) False
  28. 28.True or false: table salt dissolves in water. (a) True (b) False
  29. 29.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
  30. 30.🧂 Why do we stir in salt until no more will dissolve? (a) to make it fizz (b) to change its colour (c) to cool the water (d) to make it very salty
  31. 31.🔍 Which is the odd one out? (a) table salt (b) cooking oil (c) food colour (d) sugar
  32. 32.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
  33. 33.🔍 Which is the odd one out? (a) small pebbles (b) sawdust (c) cooking oil (d) glucose powder
  34. 34.⚖️ 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 keep it the same (b) we measure it (c) we change it
  35. 35.🧂 Which of these does not dissolve in water? (a) sugar (b) baking soda (c) glucose powder (d) sawdust
  36. 36.🧂 Which of these dissolves in water? (a) sand (b) table salt (c) chalk powder (d) cooking oil
  37. 37.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
  38. 38.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
  39. 39.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
  40. 40.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) frozen (c) saturated (d) magnetic

Answer key

  1. cannot be undone
  2. False
  3. tiny cubes
  4. bigger crystals
  5. days to see crystals
  6. a spoon
  7. False
  8. sunny or shady place
  9. safe from small children
  10. a magnet
  11. dissolves in water
  12. we keep it the same
  13. a magnet
  14. does not dissolve
  15. a balloon
  16. needed
  17. False
  18. True
  19. chalk powder
  20. True
  21. False
  22. folding paper
  23. sugar
  24. sugar
  25. a battery cell
  26. False
  27. True
  28. True
  29. dissolves in water
  30. to make it very salty
  31. cooking oil
  32. not needed
  33. glucose powder
  34. we keep it the same
  35. sawdust
  36. table salt
  37. can be undone
  38. needed
  39. dissolves in water
  40. saturated

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