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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 423 · 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 does not dissolve in water? (a) sugar (b) glucose powder (c) baking soda (d) sand
  2. 2.True or false: warm water is needed for growing salt crystals. (a) False (b) True
  3. 3.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
  4. 4.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
  5. 5.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
  6. 6.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a battery cell (c) a magnet (d) a piece of string
  7. 7.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) False (b) True
  8. 8.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
  9. 9.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny spheres (c) tiny triangles (d) tiny stars
  10. 10.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
  11. 11.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a spoon (d) yeast
  12. 12.🧂 Which of these does not dissolve in water? (a) table salt (b) baking soda (c) food colour (d) small pebbles
  13. 13.True or false: small pebbles does not dissolve in water. (a) False (b) True
  14. 14.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting butter (c) dissolving salt (d) baking a cake
  15. 15.True or false: freezing water is a change that can be undone. (a) False (b) True
  16. 16.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it fizzes (c) it turns sweet (d) crystals grow faster
  17. 17.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) folding paper (c) melting butter (d) browning lemon ink
  18. 18.🧂 Why do crystals appear as the dish dries? (a) water evaporates (b) salt grows roots (c) salt eats water (d) the dish melts
  19. 19.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
  20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a magnet (d) a shallow dish
  21. 21.True or false: melting ice is a change that cannot be undone. (a) False (b) True
  22. 22.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
  23. 23.True or false: salt is needed for growing salt crystals. (a) False (b) True
  24. 24.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False
  25. 25.⚖️ 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 keep it the same (c) we change it
  26. 26.⚖️ 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 measure it (b) we change it (c) we keep it the same
  27. 27.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
  28. 28.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
  29. 29.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a shallow dish (d) turmeric powder
  30. 30.True or false: glucose powder does not dissolve in water. (a) True (b) False
  31. 31.True or false: baking soda does not dissolve in water. (a) False (b) True
  32. 32.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) baking soda (d) sawdust
  33. 33.⚖️ 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 same dish
  34. 34.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a spoon (c) yeast (d) a magnet
  35. 35.⚖️ 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) True (b) False
  36. 36.🔍 Which is the odd one out? (a) chalk powder (b) sawdust (c) food colour (d) sand
  37. 37.True or false: small pebbles dissolves in water. (a) True (b) False
  38. 38.True or false: food colour does not dissolve in water. (a) False (b) True
  39. 39.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
  40. 40.⚖️ 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 change it (b) we keep it the same (c) we measure it

Answer key

  1. sand
  2. True
  3. can be undone
  4. dissolves in water
  5. does not dissolve
  6. a piece of string
  7. False
  8. False
  9. tiny cubes
  10. needed
  11. yeast
  12. small pebbles
  13. True
  14. baking a cake
  15. True
  16. few or no crystals
  17. browning lemon ink
  18. water evaporates
  19. needed
  20. a magnet
  21. False
  22. a grown-up
  23. True
  24. True
  25. we keep it the same
  26. we keep it the same
  27. needed
  28. cannot be undone
  29. turmeric powder
  30. False
  31. False
  32. baking soda
  33. the same dish
  34. a spoon
  35. False
  36. food colour
  37. False
  38. False
  39. True
  40. we change it

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