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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 899 · 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.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
  2. 2.🔍 Which is the odd one out? (a) cooking oil (b) baking soda (c) glucose powder (d) food colour
  3. 3.True or false: cooking an egg is a change that can be undone. (a) True (b) False
  4. 4.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) yeast (c) turmeric powder (d) a battery cell
  5. 5.True or false: table salt dissolves in water. (a) False (b) True
  6. 6.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) sugar crystals form (c) it turns to butter (d) salt crystals form
  7. 7.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
  8. 8.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
  9. 9.⚖️ 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 kind of salt (b) days to see crystals (c) the amount of salt (d) sunny or shady place
  10. 10.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
  11. 11.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
  12. 12.🔍 Which is the odd one out? (a) glucose powder (b) sawdust (c) sand (d) cooking oil
  13. 13.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is what we measure. (a) True (b) False
  14. 14.True or false: rusting iron is a change that cannot be undone. (a) True (b) False
  15. 15.🧂 Which of these dissolves in water? (a) glucose powder (b) sawdust (c) cooking oil (d) small pebbles
  16. 16.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the kind of salt (b) days to see crystals (c) sunny or shady place
  17. 17.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) freezing water (c) melting ice (d) cooking an egg
  18. 18.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
  19. 19.🔍 Which is the odd one out? (a) small pebbles (b) food colour (c) cooking oil (d) sawdust
  20. 20.🔍 Which is the odd one out? (a) table salt (b) sugar (c) chalk powder (d) baking soda
  21. 21.🔍 Which is the odd one out? (a) table salt (b) small pebbles (c) cooking oil (d) sawdust
  22. 22.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
  23. 23.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a shallow dish (c) warm water (d) yeast
  24. 24.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) True (b) False
  25. 25.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
  26. 26.🧂 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
  27. 27.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
  28. 28.🧈 Which of these is a change that can be undone? (a) melting butter (b) baking a cake (c) milk turning to curd (d) rusting iron
  29. 29.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) warm water (c) salt (d) turmeric powder
  30. 30.🧂 Which of these dissolves in water? (a) small pebbles (b) table salt (c) sawdust (d) sand
  31. 31.⚖️ 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 keep it the same (c) we change it
  32. 32.🧺 Which of these is not needed for growing salt crystals? (a) a magnet (b) a spoon (c) a shallow dish (d) salt
  33. 33.🛟 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
  34. 34.True or false: small pebbles does not dissolve in water. (a) True (b) False
  35. 35.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) dissolving salt (c) melting ice (d) baking a cake
  36. 36.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) salt (c) a spoon (d) warm water
  37. 37.True or false: rusting iron is a change that can be undone. (a) False (b) True
  38. 38.True or false: sand does not dissolve in water. (a) False (b) True
  39. 39.True or false: baking soda does not dissolve in water. (a) True (b) False
  40. 40.True or false: food colour does not dissolve in water. (a) False (b) True

Answer key

  1. does not dissolve
  2. cooking oil
  3. False
  4. a piece of string
  5. True
  6. sugar crystals form
  7. a grown-up
  8. not needed
  9. sunny or shady place
  10. cannot be undone
  11. can be undone
  12. glucose powder
  13. False
  14. True
  15. glucose powder
  16. the kind of salt
  17. cooking an egg
  18. not needed
  19. food colour
  20. chalk powder
  21. table salt
  22. dissolves in water
  23. yeast
  24. True
  25. needed
  26. to make it very salty
  27. dissolves in water
  28. melting butter
  29. turmeric powder
  30. table salt
  31. we keep it the same
  32. a magnet
  33. safe from small children
  34. True
  35. baking a cake
  36. a mirror
  37. False
  38. True
  39. False
  40. False

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