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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 446 · 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.True or false: table salt dissolves in water. (a) True (b) False
  2. 2.🔍 Which is the odd one out? (a) food colour (b) sugar (c) glucose powder (d) cooking oil
  3. 3.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) rusting iron (c) browning lemon ink (d) melting butter
  4. 4.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
  5. 5.True or false: a mirror is not needed for growing salt crystals. (a) True (b) False
  6. 6.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
  7. 7.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
  8. 8.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) days to see crystals (b) the same dish (c) the amount of salt (d) sunny or shady place
  9. 9.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
  10. 10.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) crystals grow faster (c) it fizzes (d) it turns sweet
  11. 11.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
  12. 12.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) turmeric powder (c) salt (d) a battery cell
  13. 13.🧂 Which of these dissolves in water? (a) table salt (b) cooking oil (c) chalk powder (d) small pebbles
  14. 14.⚖️ 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 keep it the same (c) we measure it
  15. 15.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
  16. 16.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) melting butter (c) freezing water (d) rusting iron
  17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a magnet (c) salt (d) a shallow dish
  18. 18.True or false: a magnet is needed for growing salt crystals. (a) False (b) True
  19. 19.🔍 Which is the odd one out? (a) small pebbles (b) chalk powder (c) table salt (d) cooking oil
  20. 20.🔍 Which is the odd one out? (a) sugar (b) table salt (c) baking soda (d) small pebbles
  21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a shallow dish (c) warm water (d) turmeric powder
  22. 22.🧂 Which of these dissolves in water? (a) sand (b) chalk powder (c) cooking oil (d) food colour
  23. 23.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
  24. 24.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
  25. 25.True or false: freezing water is a change that can be undone. (a) False (b) True
  26. 26.🧂 Which of these does not dissolve in water? (a) glucose powder (b) sawdust (c) baking soda (d) table salt
  27. 27.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a piece of string (c) a magnet (d) salt
  28. 28.🧈 Which of these is a change that can be undone? (a) freezing water (b) cooking an egg (c) rusting iron (d) baking a cake
  29. 29.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we measure it (b) we change it (c) we keep it the same
  30. 30.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) no crystals (c) liquid crystals (d) bigger crystals
  31. 31.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
  32. 32.True or false: a balloon is not needed for growing salt crystals. (a) True (b) False
  33. 33.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) in a busy doorway (c) safe from small children (d) on the edge of a table
  34. 34.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
  35. 35.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
  36. 36.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
  37. 37.🧈 Which of these is a change that can be undone? (a) baking a cake (b) rusting iron (c) folding paper (d) cooking an egg
  38. 38.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
  39. 39.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a spoon (c) a balloon (d) yeast
  40. 40.True or false: sugar does not dissolve in water. (a) False (b) True

Answer key

  1. True
  2. cooking oil
  3. melting butter
  4. a grown-up
  5. True
  6. can be undone
  7. dissolves in water
  8. days to see crystals
  9. not needed
  10. few or no crystals
  11. needed
  12. salt
  13. table salt
  14. we keep it the same
  15. cannot be undone
  16. rusting iron
  17. a magnet
  18. False
  19. table salt
  20. small pebbles
  21. turmeric powder
  22. food colour
  23. not needed
  24. cannot be undone
  25. True
  26. sawdust
  27. a magnet
  28. freezing water
  29. we change it
  30. bigger crystals
  31. can be undone
  32. True
  33. safe from small children
  34. False
  35. dissolves in water
  36. dissolves in water
  37. folding paper
  38. needed
  39. a spoon
  40. False

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