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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 262 · 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.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) False (b) True
  2. 2.True or false: warm water is not needed for growing salt crystals. (a) False (b) True
  3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) yeast (c) a shallow dish (d) a piece of string
  4. 4.⚖️ 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 measure it (c) we change it
  5. 5.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a battery cell (c) a spoon (d) salt
  6. 6.True or false: milk turning to curd is a change that cannot be undone. (a) False (b) True
  7. 7.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
  8. 8.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) days to see crystals (b) sunny or shady place (c) the amount of salt
  9. 9.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) salt (c) yeast (d) warm water
  10. 10.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) salt (c) a mirror (d) a shallow dish
  11. 11.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
  12. 12.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
  13. 13.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
  14. 14.⚖️ 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
  15. 15.True or false: browning lemon ink is a change that can be undone. (a) True (b) False
  16. 16.⚖️ 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
  17. 17.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) magnetic (c) frozen (d) saturated
  18. 18.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
  19. 19.True or false: turmeric powder is not needed for growing salt crystals. (a) False (b) True
  20. 20.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
  21. 21.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it fizzes (c) few or no crystals (d) it turns sweet
  22. 22.⚖️ 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) True (b) False
  23. 23.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) smaller crystals (c) bigger crystals (d) no crystals
  24. 24.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
  25. 25.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
  26. 26.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) salt (c) a piece of string (d) a spoon
  27. 27.🧂 Which of these dissolves in water? (a) cooking oil (b) sand (c) small pebbles (d) baking soda
  28. 28.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) milk turning to curd (c) rusting iron (d) melting butter
  29. 29.⚖️ 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 keep it the same (b) we change it (c) we measure it
  30. 30.True or false: freezing water is a change that can be undone. (a) True (b) False
  31. 31.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) yeast (c) a magnet (d) a mirror
  32. 32.True or false: yeast is needed for growing salt crystals. (a) False (b) True
  33. 33.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
  34. 34.True or false: glucose powder dissolves in water. (a) False (b) True
  35. 35.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
  36. 36.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny stars (c) tiny triangles (d) tiny spheres
  37. 37.True or false: cooking an egg is a change that can be undone. (a) False (b) True
  38. 38.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
  39. 39.🔍 Which is the odd one out? (a) cooking oil (b) food colour (c) sawdust (d) sand
  40. 40.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water

Answer key

  1. True
  2. False
  3. yeast
  4. we keep it the same
  5. a battery cell
  6. True
  7. dissolves in water
  8. the amount of salt
  9. yeast
  10. a mirror
  11. True
  12. does not dissolve
  13. True
  14. False
  15. False
  16. False
  17. saturated
  18. can be undone
  19. True
  20. needed
  21. few or no crystals
  22. False
  23. bigger crystals
  24. a grown-up
  25. cannot be undone
  26. a balloon
  27. baking soda
  28. melting butter
  29. we keep it the same
  30. True
  31. warm water
  32. False
  33. not needed
  34. True
  35. can be undone
  36. tiny cubes
  37. False
  38. False
  39. food colour
  40. dissolves in water

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