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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 264 · 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) glucose powder (b) small pebbles (c) table salt (d) food colour
  2. 2.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
  3. 3.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
  4. 4.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) safe from small children (c) in a busy doorway (d) on the edge of a table
  5. 5.True or false: sugar does not dissolve in water. (a) False (b) True
  6. 6.⚖️ 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
  7. 7.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
  8. 8.🧂 Which of these dissolves in water? (a) baking soda (b) small pebbles (c) sand (d) chalk powder
  9. 9.🧈 Which of these is a change that cannot be undone? (a) browning lemon ink (b) melting ice (c) melting butter (d) folding paper
  10. 10.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
  11. 11.⚖️ 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
  12. 12.🧂 Which of these does not dissolve in water? (a) glucose powder (b) baking soda (c) food colour (d) chalk powder
  13. 13.True or false: sand dissolves in water. (a) False (b) True
  14. 14.True or false: folding paper is a change that cannot be undone. (a) True (b) False
  15. 15.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) salt crystals form (c) it turns to oil (d) it turns to butter
  16. 16.True or false: sand does not dissolve in water. (a) True (b) False
  17. 17.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a spoon (c) yeast (d) warm water
  18. 18.True or false: glucose powder dissolves in water. (a) False (b) True
  19. 19.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a magnet (c) a piece of string (d) a spoon
  20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) yeast (b) salt (c) a piece of string (d) warm water
  21. 21.⚖️ 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) sunny or shady place (b) the amount of water (c) the same dish (d) the kind of salt
  22. 22.True or false: baking soda does not dissolve in water. (a) False (b) True
  23. 23.⚖️ 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 kind of salt (b) days to see crystals (c) sunny or shady place (d) the amount of water
  24. 24.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) baking a cake (c) dissolving salt (d) melting ice
  25. 25.True or false: warm water is needed for growing salt crystals. (a) False (b) True
  26. 26.True or false: sugar dissolves in water. (a) True (b) False
  27. 27.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
  28. 28.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is what we measure. (a) True (b) False
  29. 29.🔍 Which is the odd one out? (a) sand (b) table salt (c) small pebbles (d) cooking oil
  30. 30.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
  31. 31.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
  32. 32.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting butter (c) cooking an egg (d) dissolving salt
  33. 33.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) water evaporates (c) salt grows roots (d) salt eats water
  34. 34.⚖️ 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 keep it the same (b) we measure it (c) we change it
  35. 35.🧺 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) turmeric powder
  36. 36.🧈 Which of these is a change that can be undone? (a) freezing water (b) browning lemon ink (c) baking a cake (d) cooking an egg
  37. 37.True or false: freezing water is a change that cannot be undone. (a) True (b) False
  38. 38.🔍 Which is the odd one out? (a) chalk powder (b) cooking oil (c) sawdust (d) food colour
  39. 39.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
  40. 40.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone

Answer key

  1. small pebbles
  2. dissolves in water
  3. needed
  4. safe from small children
  5. False
  6. True
  7. dissolves in water
  8. baking soda
  9. browning lemon ink
  10. not needed
  11. False
  12. chalk powder
  13. False
  14. False
  15. sugar crystals form
  16. True
  17. yeast
  18. True
  19. a magnet
  20. yeast
  21. sunny or shady place
  22. False
  23. days to see crystals
  24. baking a cake
  25. True
  26. True
  27. needed
  28. False
  29. table salt
  30. can be undone
  31. cannot be undone
  32. cooking an egg
  33. water evaporates
  34. we measure it
  35. turmeric powder
  36. freezing water
  37. False
  38. food colour
  39. not needed
  40. cannot be undone

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