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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 471 · 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.

NameDateTime takenScore ___ / 40
  1. 1.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we keep it the same (b) we change it (c) we measure it
  2. 2.True or false: chalk powder does not dissolve in water. (a) False (b) True
  3. 3.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a balloon (c) turmeric powder (d) a shallow dish
  4. 4.🛟 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
  5. 5.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) warm water (c) a battery cell (d) turmeric powder
  6. 6.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) milk turning to curd (c) freezing water (d) browning lemon ink
  7. 7.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
  8. 8.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
  9. 9.⚖️ 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 amount of salt (b) sunny or shady place (c) days to see crystals (d) the same dish
  10. 10.⚖️ 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
  11. 11.True or false: freezing water is a change that can be undone. (a) False (b) True
  12. 12.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) yeast (c) warm water (d) a shallow dish
  13. 13.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) milk turning to curd (c) melting ice (d) dissolving salt
  14. 14.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
  15. 15.⚖️ 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 measure it (b) we keep it the same (c) we change it
  16. 16.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) it fizzes (c) crystals grow faster (d) few or no crystals
  17. 17.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
  18. 18.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
  19. 19.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
  20. 20.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) sunny or shady place (b) the kind of salt (c) days to see crystals
  21. 21.🧂 Which of these does not dissolve in water? (a) table salt (b) baking soda (c) cooking oil (d) food colour
  22. 22.🔍 Which is the odd one out? (a) food colour (b) baking soda (c) glucose powder (d) sand
  23. 23.🧂 Which of these does not dissolve in water? (a) food colour (b) sugar (c) table salt (d) sawdust
  24. 24.🔍 Which is the odd one out? (a) baking soda (b) chalk powder (c) cooking oil (d) sand
  25. 25.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
  26. 26.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
  27. 27.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
  28. 28.True or false: freezing water is a change that cannot be undone. (a) True (b) False
  29. 29.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a battery cell (c) salt (d) a shallow dish
  30. 30.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
  31. 31.True or false: sawdust does not dissolve in water. (a) True (b) False
  32. 32.🔍 Which is the odd one out? (a) cooking oil (b) small pebbles (c) sugar (d) sawdust
  33. 33.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a piece of string (c) salt (d) a magnet
  34. 34.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
  35. 35.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
  36. 36.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) fish make it (c) sand is ground up (d) sea water evaporates
  37. 37.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
  38. 38.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
  39. 39.True or false: a balloon is not needed for growing salt crystals. (a) True (b) False
  40. 40.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone

Answer key

  1. we measure it
  2. True
  3. a shallow dish
  4. safe from small children
  5. warm water
  6. freezing water
  7. needed
  8. dissolves in water
  9. days to see crystals
  10. True
  11. True
  12. yeast
  13. milk turning to curd
  14. a grown-up
  15. we keep it the same
  16. few or no crystals
  17. True
  18. False
  19. not needed
  20. the kind of salt
  21. cooking oil
  22. sand
  23. sawdust
  24. baking soda
  25. does not dissolve
  26. dissolves in water
  27. cannot be undone
  28. False
  29. a battery cell
  30. does not dissolve
  31. True
  32. sugar
  33. a magnet
  34. can be undone
  35. False
  36. sea water evaporates
  37. needed
  38. cannot be undone
  39. True
  40. cannot be undone

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