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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 107 · 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 is a change that cannot be undone? (a) cooking an egg (b) folding paper (c) freezing water (d) melting butter
  2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) a piece of string (c) a spoon (d) salt
  3. 3.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
  4. 4.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
  5. 5.⚖️ 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) False (b) True
  6. 6.True or false: rusting iron is a change that can be undone. (a) True (b) False
  7. 7.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
  8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a balloon (c) a spoon (d) a shallow dish
  9. 9.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) magnetic (c) frozen (d) empty
  10. 10.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) False (b) True
  11. 11.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
  12. 12.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) baking a cake (c) folding paper (d) dissolving salt
  13. 13.True or false: freezing water is a change that cannot be undone. (a) False (b) True
  14. 14.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a battery cell (c) a mirror (d) a spoon
  15. 15.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) smaller crystals (c) no crystals (d) bigger crystals
  16. 16.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
  17. 17.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) in a busy doorway (c) next to the baby (d) on the edge of a table
  18. 18.True or false: a piece of string is needed for growing salt crystals. (a) True (b) False
  19. 19.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is what we measure. (a) True (b) False
  20. 20.True or false: table salt does not dissolve in water. (a) True (b) False
  21. 21.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
  22. 22.🔍 Which is the odd one out? (a) small pebbles (b) sawdust (c) sand (d) baking soda
  23. 23.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) it turns sweet (c) few or no crystals (d) crystals grow faster
  24. 24.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
  25. 25.True or false: sawdust does not dissolve in water. (a) False (b) True
  26. 26.True or false: glucose powder does not dissolve in water. (a) False (b) True
  27. 27.⚖️ 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 change it (b) we measure it (c) we keep it the same
  28. 28.🧈 Which of these is a change that can be undone? (a) dissolving salt (b) milk turning to curd (c) browning lemon ink (d) baking a cake
  29. 29.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
  30. 30.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny triangles (c) tiny spheres (d) tiny stars
  31. 31.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
  32. 32.⚖️ 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 water (b) days to see crystals (c) sunny or shady place (d) the kind of salt
  33. 33.🔍 Which is the odd one out? (a) sand (b) chalk powder (c) sugar (d) cooking oil
  34. 34.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we keep it the same (b) we change it (c) we measure it
  35. 35.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
  36. 36.True or false: a balloon is not needed for growing salt crystals. (a) False (b) True
  37. 37.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
  38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) yeast (c) warm water (d) salt
  39. 39.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) cooking an egg (c) folding paper (d) baking a cake
  40. 40.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) glucose powder (d) cooking oil

Answer key

  1. cooking an egg
  2. turmeric powder
  3. not needed
  4. not needed
  5. False
  6. False
  7. False
  8. a balloon
  9. saturated
  10. True
  11. dissolves in water
  12. baking a cake
  13. False
  14. a spoon
  15. bigger crystals
  16. does not dissolve
  17. safe from small children
  18. True
  19. False
  20. False
  21. needed
  22. baking soda
  23. few or no crystals
  24. not needed
  25. True
  26. False
  27. we keep it the same
  28. dissolving salt
  29. False
  30. tiny cubes
  31. does not dissolve
  32. sunny or shady place
  33. sugar
  34. we keep it the same
  35. can be undone
  36. True
  37. dissolves in water
  38. yeast
  39. folding paper
  40. glucose powder

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