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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 996 · 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.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
  2. 2.🧂 Which of these dissolves in water? (a) chalk powder (b) sawdust (c) cooking oil (d) food colour
  3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a shallow dish (c) a spoon (d) yeast
  4. 4.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
  5. 5.🧂 Which of these dissolves in water? (a) chalk powder (b) sawdust (c) cooking oil (d) baking soda
  6. 6.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) freezing water (c) cooking an egg (d) browning lemon ink
  7. 7.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it turns sweet (c) it fizzes (d) few or no crystals
  8. 8.⚖️ 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
  9. 9.🧈 Which of these is a change that can be undone? (a) rusting iron (b) milk turning to curd (c) dissolving salt (d) browning lemon ink
  10. 10.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
  11. 11.🔍 Which is the odd one out? (a) glucose powder (b) chalk powder (c) sugar (d) baking soda
  12. 12.🔍 Which is the odd one out? (a) sand (b) small pebbles (c) sugar (d) chalk powder
  13. 13.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
  14. 14.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) warm water (c) a shallow dish (d) salt
  15. 15.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
  16. 16.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
  17. 17.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
  18. 18.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) safe from small children (c) next to the baby (d) on the edge of a table
  19. 19.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a shallow dish (c) turmeric powder (d) yeast
  20. 20.🧈 Which of these is a change that can be undone? (a) rusting iron (b) melting ice (c) cooking an egg (d) browning lemon ink
  21. 21.True or false: salt is needed for growing salt crystals. (a) True (b) False
  22. 22.True or false: folding paper is a change that can be undone. (a) True (b) False
  23. 23.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
  24. 24.True or false: a battery cell is needed for growing salt crystals. (a) False (b) True
  25. 25.🧈 Which of these is a change that can be undone? (a) melting butter (b) rusting iron (c) baking a cake (d) cooking an egg
  26. 26.🔍 Which is the odd one out? (a) table salt (b) sand (c) glucose powder (d) baking soda
  27. 27.🧂 Which of these dissolves in water? (a) table salt (b) chalk powder (c) cooking oil (d) sawdust
  28. 28.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a spoon (d) a balloon
  29. 29.🧂 Which of these does not dissolve in water? (a) baking soda (b) sand (c) glucose powder (d) food colour
  30. 30.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
  31. 31.⚖️ 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) days to see crystals (b) the kind of salt (c) the amount of water (d) sunny or shady place
  32. 32.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) saturated (c) magnetic (d) frozen
  33. 33.True or false: salt is not needed for growing salt crystals. (a) True (b) False
  34. 34.🧂 Which of these dissolves in water? (a) chalk powder (b) glucose powder (c) cooking oil (d) sawdust
  35. 35.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
  36. 36.🔍 Which is the odd one out? (a) sawdust (b) table salt (c) cooking oil (d) small pebbles
  37. 37.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) turmeric powder (c) salt (d) a shallow dish
  38. 38.⚖️ 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
  39. 39.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True
  40. 40.True or false: table salt does not dissolve in water. (a) False (b) True

Answer key

  1. not needed
  2. food colour
  3. yeast
  4. True
  5. baking soda
  6. freezing water
  7. few or no crystals
  8. False
  9. dissolving salt
  10. cannot be undone
  11. chalk powder
  12. sugar
  13. needed
  14. a mirror
  15. does not dissolve
  16. does not dissolve
  17. can be undone
  18. safe from small children
  19. a shallow dish
  20. melting ice
  21. True
  22. True
  23. False
  24. False
  25. melting butter
  26. sand
  27. table salt
  28. a balloon
  29. sand
  30. does not dissolve
  31. sunny or shady place
  32. saturated
  33. False
  34. glucose powder
  35. cannot be undone
  36. table salt
  37. turmeric powder
  38. we keep it the same
  39. True
  40. False

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