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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 712 · 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 of these is a change that can be undone? (a) cooking an egg (b) melting ice (c) browning lemon ink (d) baking a cake
  2. 2.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) next to the baby (c) in a busy doorway (d) on the edge of a table
  3. 3.True or false: salt is not needed for growing salt crystals. (a) True (b) False
  4. 4.🧂 Which of these does not dissolve in water? (a) sand (b) glucose powder (c) baking soda (d) sugar
  5. 5.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is the one thing we change. (a) True (b) False
  6. 6.🧂 Which of these does not dissolve in water? (a) sugar (b) chalk powder (c) baking soda (d) table salt
  7. 7.🧈 Which of these is a change that can be undone? (a) rusting iron (b) folding paper (c) browning lemon ink (d) milk turning to curd
  8. 8.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
  9. 9.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) turmeric powder (d) a piece of string
  10. 10.True or false: milk turning to curd is a change that cannot be undone. (a) True (b) False
  11. 11.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) warm water (c) yeast (d) a piece of string
  12. 12.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
  13. 13.⚖️ 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) days to see crystals (c) the amount of salt
  14. 14.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a shallow dish (d) a mirror
  15. 15.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny stars (c) tiny triangles (d) tiny cubes
  16. 16.🧂 Why do we stir in salt until no more will dissolve? (a) to make it very salty (b) to make it fizz (c) to cool the water (d) to change its colour
  17. 17.True or false: baking soda does not dissolve in water. (a) True (b) False
  18. 18.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to oil (c) it turns to butter (d) sugar crystals form
  19. 19.🧺 Which of these is needed for growing salt crystals? (a) salt (b) a magnet (c) turmeric powder (d) a balloon
  20. 20.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a mirror (c) warm water (d) a spoon
  21. 21.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) warm water (c) a spoon (d) a battery cell
  22. 22.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
  23. 23.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
  24. 24.True or false: baking a cake is a change that cannot be undone. (a) True (b) False
  25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a battery cell (c) salt (d) warm water
  26. 26.🧂 Does sugar 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.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) cooking an egg (c) folding paper (d) melting ice
  29. 29.🔍 Which is the odd one out? (a) sand (b) glucose powder (c) sugar (d) table salt
  30. 30.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
  31. 31.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) True (b) False
  32. 32.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a piece of string (c) salt (d) yeast
  33. 33.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
  34. 34.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
  35. 35.🧂 Which of these dissolves in water? (a) sawdust (b) sand (c) food colour (d) small pebbles
  36. 36.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) browning lemon ink (c) melting ice (d) folding paper
  37. 37.True or false: sand does not dissolve in water. (a) False (b) True
  38. 38.True or false: freezing water is a change that can be undone. (a) False (b) True
  39. 39.🔍 Which is the odd one out? (a) chalk powder (b) baking soda (c) table salt (d) sugar
  40. 40.True or false: cooking oil does not dissolve in water. (a) False (b) True

Answer key

  1. melting ice
  2. safe from small children
  3. False
  4. sand
  5. False
  6. chalk powder
  7. folding paper
  8. not needed
  9. turmeric powder
  10. True
  11. yeast
  12. dissolves in water
  13. the amount of salt
  14. a mirror
  15. tiny cubes
  16. to make it very salty
  17. False
  18. sugar crystals form
  19. salt
  20. a mirror
  21. a battery cell
  22. False
  23. False
  24. True
  25. a battery cell
  26. dissolves in water
  27. cannot be undone
  28. cooking an egg
  29. sand
  30. dissolves in water
  31. False
  32. yeast
  33. not needed
  34. False
  35. food colour
  36. browning lemon ink
  37. True
  38. True
  39. chalk powder
  40. True

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