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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 695 · 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.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a balloon (c) warm water (d) a piece of string
  2. 2.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
  3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a mirror (c) a piece of string (d) salt
  4. 4.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
  5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) yeast (c) a shallow dish (d) warm water
  6. 6.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
  7. 7.🧂 Which of these dissolves in water? (a) table salt (b) small pebbles (c) sawdust (d) cooking oil
  8. 8.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
  9. 9.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) dissolving salt (c) melting butter (d) baking a cake
  10. 10.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
  11. 11.⚖️ 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 measure it (b) we keep it the same (c) we change it
  12. 12.🧂 Which of these dissolves in water? (a) chalk powder (b) cooking oil (c) food colour (d) sand
  13. 13.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
  14. 14.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
  15. 15.True or false: melting ice is a change that cannot be undone. (a) True (b) False
  16. 16.🧈 Which of these is a change that cannot be undone? (a) rusting iron (b) folding paper (c) melting butter (d) melting ice
  17. 17.True or false: table salt does not dissolve in water. (a) True (b) False
  18. 18.⚖️ 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 amount of salt (b) sunny or shady place (c) the same dish (d) the kind of salt
  19. 19.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a spoon (c) a shallow dish (d) a magnet
  20. 20.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) salt (c) yeast (d) turmeric powder
  21. 21.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
  22. 22.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to oil (c) sugar crystals form (d) it turns to butter
  23. 23.🧂 Which of these dissolves in water? (a) glucose powder (b) sawdust (c) sand (d) small pebbles
  24. 24.True or false: melting ice is a change that can be undone. (a) False (b) True
  25. 25.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
  26. 26.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) cooking an egg (c) dissolving salt (d) freezing water
  27. 27.⚖️ 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 keep it the same (b) we change it (c) we measure it
  28. 28.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) yeast (c) warm water (d) a magnet
  29. 29.🔍 Which is the odd one out? (a) baking soda (b) glucose powder (c) food colour (d) sawdust
  30. 30.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) magnetic (c) empty (d) frozen
  31. 31.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) warm water (c) a shallow dish (d) a piece of string
  32. 32.🧂 Which of these does not dissolve in water? (a) table salt (b) baking soda (c) chalk powder (d) sugar
  33. 33.⚖️ 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 change it (b) we measure it (c) we keep it the same
  34. 34.🔍 Which is the odd one out? (a) chalk powder (b) glucose powder (c) sugar (d) baking soda
  35. 35.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
  36. 36.True or false: table salt dissolves in water. (a) True (b) False
  37. 37.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
  38. 38.True or false: melting butter is a change that cannot be undone. (a) False (b) True
  39. 39.⚖️ 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) True (b) False
  40. 40.🛟 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

Answer key

  1. a balloon
  2. not needed
  3. a mirror
  4. False
  5. yeast
  6. does not dissolve
  7. table salt
  8. not needed
  9. baking a cake
  10. needed
  11. we change it
  12. food colour
  13. dissolves in water
  14. needed
  15. False
  16. rusting iron
  17. False
  18. sunny or shady place
  19. a magnet
  20. salt
  21. dissolves in water
  22. sugar crystals form
  23. glucose powder
  24. True
  25. False
  26. cooking an egg
  27. we keep it the same
  28. warm water
  29. sawdust
  30. saturated
  31. turmeric powder
  32. chalk powder
  33. we keep it the same
  34. chalk powder
  35. not needed
  36. True
  37. cannot be undone
  38. False
  39. False
  40. a grown-up

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