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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 981 · 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.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
  2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) warm water (c) a piece of string (d) a spoon
  3. 3.True or false: milk turning to curd is a change that cannot be undone. (a) True (b) False
  4. 4.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is kept the same. (a) False (b) True
  5. 5.True or false: a balloon is not needed for growing salt crystals. (a) True (b) False
  6. 6.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
  7. 7.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) warm water (c) a balloon (d) a shallow dish
  8. 8.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
  9. 9.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a piece of string (d) yeast
  10. 10.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) True (b) False
  11. 11.⚖️ 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 change it (c) we keep it the same
  12. 12.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) in a busy doorway (c) on the edge of a table (d) safe from small children
  13. 13.True or false: cooking oil does not dissolve in water. (a) False (b) True
  14. 14.🔍 Which is the odd one out? (a) food colour (b) sawdust (c) baking soda (d) glucose powder
  15. 15.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) salt (c) a mirror (d) a piece of string
  16. 16.⚖️ 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) False (b) True
  17. 17.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
  18. 18.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a battery cell (d) warm water
  19. 19.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
  20. 20.🔍 Which is the odd one out? (a) sawdust (b) chalk powder (c) glucose powder (d) sand
  21. 21.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny stars (c) tiny spheres (d) tiny triangles
  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 kind of salt (b) sunny or shady place (c) the amount of salt (d) days to see crystals
  23. 23.🔍 Which is the odd one out? (a) sand (b) table salt (c) sawdust (d) cooking oil
  24. 24.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
  25. 25.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
  26. 26.True or false: salt is needed for growing salt crystals. (a) True (b) False
  27. 27.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) salt crystals form (c) sugar crystals form (d) it turns to butter
  28. 28.True or false: warm water is needed for growing salt crystals. (a) True (b) False
  29. 29.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
  30. 30.🧂 Which of these does not dissolve in water? (a) sugar (b) food colour (c) sand (d) baking soda
  31. 31.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
  32. 32.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
  33. 33.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
  34. 34.⚖️ 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
  35. 35.True or false: a piece of string is needed for growing salt crystals. (a) False (b) True
  36. 36.🧈 Which of these is a change that can be undone? (a) melting ice (b) baking a cake (c) browning lemon ink (d) cooking an egg
  37. 37.True or false: melting ice is a change that cannot be undone. (a) True (b) False
  38. 38.True or false: glucose powder does not dissolve in water. (a) True (b) False
  39. 39.🔍 Which is the odd one out? (a) chalk powder (b) table salt (c) glucose powder (d) food colour
  40. 40.True or false: baking soda dissolves in water. (a) True (b) False

Answer key

  1. a grown-up
  2. a balloon
  3. True
  4. False
  5. True
  6. can be undone
  7. a balloon
  8. cannot be undone
  9. yeast
  10. True
  11. we keep it the same
  12. safe from small children
  13. True
  14. sawdust
  15. a mirror
  16. True
  17. cannot be undone
  18. a battery cell
  19. does not dissolve
  20. glucose powder
  21. tiny cubes
  22. sunny or shady place
  23. table salt
  24. cannot be undone
  25. needed
  26. True
  27. sugar crystals form
  28. True
  29. False
  30. sand
  31. can be undone
  32. False
  33. can be undone
  34. False
  35. True
  36. melting ice
  37. False
  38. False
  39. chalk powder
  40. True

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