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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 699 · 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 shallow dish (b) warm water (c) a spoon (d) a mirror
  2. 2.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
  3. 3.⚖️ 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 measure it (b) we change it (c) we keep it the same
  4. 4.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a magnet (c) turmeric powder (d) a shallow dish
  5. 5.⚖️ 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
  6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) yeast (c) salt (d) a spoon
  7. 7.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) safe from small children (c) on the edge of a table (d) next to the baby
  8. 8.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) liquid crystals (c) bigger crystals (d) smaller crystals
  9. 9.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) True (b) False
  10. 10.True or false: food colour does not dissolve in water. (a) True (b) False
  11. 11.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) empty (c) saturated (d) magnetic
  12. 12.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a balloon (c) a spoon (d) warm water
  13. 13.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
  14. 14.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) turmeric powder (c) salt (d) a shallow dish
  15. 15.🔮 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
  16. 16.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
  17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) a spoon (c) a shallow dish (d) salt
  18. 18.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
  19. 19.True or false: glucose powder does not dissolve in water. (a) False (b) True
  20. 20.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt grows roots (c) salt eats water (d) water evaporates
  21. 21.True or false: sand dissolves in water. (a) True (b) False
  22. 22.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) salt rains down (c) sand is ground up (d) sea water evaporates
  23. 23.True or false: chalk powder dissolves in water. (a) False (b) True
  24. 24.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
  25. 25.🧂 Which of these dissolves in water? (a) sand (b) food colour (c) chalk powder (d) cooking oil
  26. 26.🔍 Which is the odd one out? (a) sawdust (b) sand (c) sugar (d) cooking oil
  27. 27.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
  28. 28.True or false: rusting iron is a change that can be undone. (a) True (b) False
  29. 29.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
  30. 30.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) yeast (c) turmeric powder (d) warm water
  31. 31.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) rusting iron (c) cooking an egg (d) freezing water
  32. 32.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is the one thing we change. (a) False (b) True
  33. 33.True or false: sand does not dissolve in water. (a) True (b) False
  34. 34.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
  35. 35.🧂 Which of these dissolves in water? (a) chalk powder (b) table salt (c) sawdust (d) cooking oil
  36. 36.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
  37. 37.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a balloon (c) salt (d) turmeric powder
  38. 38.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting butter (c) melting ice (d) cooking an egg
  39. 39.True or false: cooking oil dissolves in water. (a) False (b) True
  40. 40.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed

Answer key

  1. a mirror
  2. a grown-up
  3. we measure it
  4. a shallow dish
  5. we change it
  6. yeast
  7. safe from small children
  8. bigger crystals
  9. True
  10. False
  11. saturated
  12. a balloon
  13. needed
  14. turmeric powder
  15. sugar crystals form
  16. can be undone
  17. a magnet
  18. does not dissolve
  19. False
  20. water evaporates
  21. False
  22. sea water evaporates
  23. False
  24. cannot be undone
  25. food colour
  26. sugar
  27. dissolves in water
  28. False
  29. can be undone
  30. warm water
  31. freezing water
  32. False
  33. True
  34. not needed
  35. table salt
  36. not needed
  37. salt
  38. cooking an egg
  39. False
  40. not needed

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