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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 605 · 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.🔍 Which is the odd one out? (a) sawdust (b) cooking oil (c) food colour (d) chalk powder
  2. 2.True or false: turmeric powder is not needed for growing salt crystals. (a) False (b) True
  3. 3.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
  4. 4.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) sugar crystals form (c) it turns to oil (d) it turns to butter
  5. 5.⚖️ 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
  6. 6.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
  7. 7.🧺 Which of these is needed for growing salt crystals? (a) salt (b) a battery cell (c) a mirror (d) yeast
  8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) warm water (c) salt (d) a piece of string
  9. 9.True or false: table salt does not dissolve in water. (a) False (b) True
  10. 10.⚖️ 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
  11. 11.True or false: table salt dissolves in water. (a) True (b) False
  12. 12.🧂 Which of these does not dissolve in water? (a) table salt (b) baking soda (c) cooking oil (d) sugar
  13. 13.True or false: food colour does not dissolve in water. (a) False (b) True
  14. 14.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
  15. 15.True or false: sugar does not dissolve in water. (a) False (b) True
  16. 16.🧺 Which of these is not needed for growing salt crystals? (a) yeast (b) warm water (c) salt (d) a spoon
  17. 17.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
  18. 18.⚖️ 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
  19. 19.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) sea water evaporates (c) fish make it (d) salt rains down
  20. 20.🧈 Which of these is a change that can be undone? (a) baking a cake (b) cooking an egg (c) dissolving salt (d) rusting iron
  21. 21.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
  22. 22.🔍 Which is the odd one out? (a) sugar (b) sand (c) table salt (d) glucose powder
  23. 23.True or false: a balloon is not needed for growing salt crystals. (a) True (b) False
  24. 24.True or false: food colour dissolves in water. (a) False (b) True
  25. 25.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
  26. 26.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) dissolving salt (c) baking a cake (d) freezing water
  27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a balloon (c) salt (d) a spoon
  28. 28.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) freezing water (c) melting ice (d) milk turning to curd
  29. 29.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) safe from small children (c) next to the baby (d) on the edge of a table
  30. 30.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
  31. 31.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) rusting iron (c) cooking an egg (d) melting butter
  32. 32.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) turmeric powder (c) a shallow dish (d) salt
  33. 33.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
  34. 34.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) a shallow dish (c) salt (d) warm water
  35. 35.🔍 Which is the odd one out? (a) cooking oil (b) sugar (c) glucose powder (d) table salt
  36. 36.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
  37. 37.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a magnet (c) salt (d) a piece of string
  38. 38.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
  39. 39.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
  40. 40.True or false: rusting iron is a change that can be undone. (a) False (b) True

Answer key

  1. food colour
  2. True
  3. not needed
  4. sugar crystals form
  5. True
  6. dissolves in water
  7. salt
  8. a mirror
  9. False
  10. True
  11. True
  12. cooking oil
  13. False
  14. False
  15. False
  16. yeast
  17. needed
  18. we keep it the same
  19. sea water evaporates
  20. dissolving salt
  21. needed
  22. sand
  23. True
  24. True
  25. a grown-up
  26. baking a cake
  27. a balloon
  28. milk turning to curd
  29. safe from small children
  30. cannot be undone
  31. melting butter
  32. turmeric powder
  33. does not dissolve
  34. turmeric powder
  35. cooking oil
  36. does not dissolve
  37. a magnet
  38. dissolves in water
  39. not needed
  40. False

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