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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 287 · 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) food colour (b) cooking oil (c) baking soda (d) glucose powder
  2. 2.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
  3. 3.True or false: small pebbles does not dissolve in water. (a) True (b) False
  4. 4.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
  5. 5.🔍 Which is the odd one out? (a) baking soda (b) sawdust (c) small pebbles (d) chalk powder
  6. 6.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
  7. 7.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) turmeric powder (c) a magnet (d) a piece of string
  8. 8.🔍 Which is the odd one out? (a) table salt (b) small pebbles (c) food colour (d) baking soda
  9. 9.🧂 Which of these does not dissolve in water? (a) glucose powder (b) food colour (c) cooking oil (d) sugar
  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 what we measure. (a) True (b) False
  11. 11.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
  12. 12.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a battery cell (c) a piece of string (d) warm water
  13. 13.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True
  14. 14.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) on the edge of a table (c) safe from small children (d) in a busy doorway
  15. 15.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
  16. 16.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
  17. 17.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
  18. 18.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
  19. 19.True or false: melting butter is a change that cannot be undone. (a) True (b) False
  20. 20.⚖️ 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 keep it the same (b) we change it (c) we measure it
  21. 21.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) melting ice (c) rusting iron (d) baking a cake
  22. 22.⚖️ 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 same dish (b) the amount of water (c) sunny or shady place (d) the amount of salt
  23. 23.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a mirror (d) a spoon
  24. 24.True or false: milk turning to curd is a change that cannot be undone. (a) False (b) True
  25. 25.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
  26. 26.True or false: sand dissolves in water. (a) True (b) False
  27. 27.🔍 Which is the odd one out? (a) sand (b) table salt (c) baking soda (d) sugar
  28. 28.⚖️ 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) the amount of water (c) days to see crystals (d) sunny or shady place
  29. 29.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
  30. 30.True or false: sugar does not dissolve in water. (a) True (b) False
  31. 31.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
  32. 32.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) days to see crystals (b) the kind of salt (c) sunny or shady place
  33. 33.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
  34. 34.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
  35. 35.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
  36. 36.⚖️ 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 change it (b) we measure it (c) we keep it the same
  37. 37.True or false: table salt dissolves in water. (a) True (b) False
  38. 38.True or false: glucose powder dissolves in water. (a) False (b) True
  39. 39.True or false: folding paper is a change that cannot be undone. (a) True (b) False
  40. 40.True or false: a piece of string is needed for growing salt crystals. (a) True (b) False

Answer key

  1. cooking oil
  2. does not dissolve
  3. True
  4. does not dissolve
  5. baking soda
  6. can be undone
  7. a piece of string
  8. small pebbles
  9. cooking oil
  10. False
  11. not needed
  12. a battery cell
  13. True
  14. safe from small children
  15. False
  16. cannot be undone
  17. False
  18. not needed
  19. False
  20. we keep it the same
  21. melting ice
  22. sunny or shady place
  23. a mirror
  24. True
  25. False
  26. False
  27. sand
  28. days to see crystals
  29. does not dissolve
  30. False
  31. can be undone
  32. the kind of salt
  33. cannot be undone
  34. dissolves in water
  35. a grown-up
  36. we keep it the same
  37. True
  38. True
  39. False
  40. True

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