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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 822 · 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.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) smaller crystals (c) no crystals (d) liquid crystals
  2. 2.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) safe from small children (c) next to the baby (d) in a busy doorway
  3. 3.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) fish make it (c) sea water evaporates (d) sand is ground up
  4. 4.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
  5. 5.⚖️ 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 same dish (b) days to see crystals (c) sunny or shady place
  6. 6.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
  7. 7.True or false: table salt dissolves in water. (a) True (b) False
  8. 8.🔍 Which is the odd one out? (a) sand (b) sawdust (c) sugar (d) cooking oil
  9. 9.🧂 Which of these dissolves in water? (a) sawdust (b) food colour (c) small pebbles (d) chalk powder
  10. 10.True or false: browning lemon ink is a change that can be undone. (a) True (b) False
  11. 11.🔍 Which is the odd one out? (a) small pebbles (b) chalk powder (c) table salt (d) cooking oil
  12. 12.🧂 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
  13. 13.⚖️ 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 keep it the same (b) we measure it (c) we change it
  14. 14.True or false: a spoon is needed for growing salt crystals. (a) True (b) False
  15. 15.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
  16. 16.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
  17. 17.True or false: melting ice is a change that can be undone. (a) False (b) True
  18. 18.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a magnet (c) a spoon (d) salt
  19. 19.⚖️ 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 amount of salt (b) days to see crystals (c) sunny or shady place
  20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) warm water (c) a spoon (d) a balloon
  21. 21.True or false: sawdust does not dissolve in water. (a) False (b) True
  22. 22.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we measure it (b) we change it (c) we keep it the same
  23. 23.🔍 Which is the odd one out? (a) food colour (b) glucose powder (c) chalk powder (d) sugar
  24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a mirror (c) salt (d) warm water
  25. 25.⚖️ 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 measure it (b) we keep it the same (c) we change it
  26. 26.🔍 Which is the odd one out? (a) food colour (b) baking soda (c) table salt (d) sawdust
  27. 27.True or false: sugar dissolves in water. (a) True (b) False
  28. 28.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
  29. 29.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) True (b) False
  30. 30.True or false: chalk powder dissolves in water. (a) False (b) True
  31. 31.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) baking a cake (c) dissolving salt (d) browning lemon ink
  32. 32.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
  33. 33.⚖️ 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) True (b) False
  34. 34.True or false: freezing water is a change that cannot be undone. (a) False (b) True
  35. 35.True or false: baking soda dissolves in water. (a) True (b) False
  36. 36.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a balloon (c) turmeric powder (d) salt
  37. 37.True or false: sand does not dissolve in water. (a) False (b) True
  38. 38.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) turmeric powder (c) warm water (d) a spoon
  39. 39.True or false: a magnet is not needed for growing salt crystals. (a) True (b) False
  40. 40.True or false: small pebbles dissolves in water. (a) True (b) False

Answer key

  1. bigger crystals
  2. safe from small children
  3. sea water evaporates
  4. not needed
  5. the same dish
  6. does not dissolve
  7. True
  8. sugar
  9. food colour
  10. False
  11. table salt
  12. to make it very salty
  13. we change it
  14. True
  15. dissolves in water
  16. not needed
  17. True
  18. a magnet
  19. the amount of salt
  20. a balloon
  21. True
  22. we keep it the same
  23. chalk powder
  24. a mirror
  25. we measure it
  26. sawdust
  27. True
  28. dissolves in water
  29. True
  30. False
  31. dissolving salt
  32. needed
  33. True
  34. False
  35. True
  36. salt
  37. True
  38. turmeric powder
  39. True
  40. False

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