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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 71 · 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 what we measure. (a) True (b) False
  2. 2.🧂 Which of these dissolves in water? (a) cooking oil (b) sawdust (c) chalk powder (d) sugar
  3. 3.⚖️ 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 keep it the same (b) we change it (c) we measure it
  4. 4.True or false: yeast is needed for growing salt crystals. (a) True (b) False
  5. 5.🧂 Which of these dissolves in water? (a) baking soda (b) chalk powder (c) small pebbles (d) sawdust
  6. 6.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
  7. 7.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) yeast (c) turmeric powder (d) a shallow dish
  8. 8.True or false: warm water is needed for growing salt crystals. (a) False (b) True
  9. 9.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny stars (c) tiny triangles (d) tiny spheres
  10. 10.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) a spoon (c) salt (d) a piece of string
  11. 11.🔍 Which is the odd one out? (a) baking soda (b) small pebbles (c) food colour (d) sugar
  12. 12.True or false: glucose powder does not dissolve in water. (a) False (b) True
  13. 13.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
  14. 14.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
  15. 15.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) frozen (c) empty (d) magnetic
  16. 16.🧈 Which of these is a change that can be undone? (a) freezing water (b) cooking an egg (c) baking a cake (d) rusting iron
  17. 17.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
  18. 18.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a shallow dish (d) yeast
  19. 19.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is what we measure. (a) True (b) False
  20. 20.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
  21. 21.⚖️ 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 change it (b) we keep it the same (c) we measure it
  22. 22.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
  23. 23.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
  24. 24.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
  25. 25.🔍 Which is the odd one out? (a) glucose powder (b) cooking oil (c) sugar (d) food colour
  26. 26.🧂 Which of these dissolves in water? (a) glucose powder (b) sand (c) small pebbles (d) chalk powder
  27. 27.True or false: a magnet is needed for growing salt crystals. (a) False (b) True
  28. 28.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
  29. 29.True or false: melting butter is a change that can be undone. (a) True (b) False
  30. 30.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) salt rains down (c) fish make it (d) sea water evaporates
  31. 31.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) baking a cake (c) cooking an egg (d) dissolving salt
  32. 32.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
  33. 33.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
  34. 34.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
  35. 35.🔍 Which is the odd one out? (a) baking soda (b) sand (c) sugar (d) glucose powder
  36. 36.🧂 Which of these dissolves in water? (a) cooking oil (b) sand (c) food colour (d) small pebbles
  37. 37.⚖️ 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 measure it (b) we keep it the same (c) we change it
  38. 38.🧈 Which of these is a change that can be undone? (a) rusting iron (b) baking a cake (c) folding paper (d) cooking an egg
  39. 39.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
  40. 40.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) sugar crystals form (c) salt crystals form (d) it turns to oil

Answer key

  1. False
  2. sugar
  3. we keep it the same
  4. False
  5. baking soda
  6. False
  7. a shallow dish
  8. True
  9. tiny cubes
  10. a balloon
  11. small pebbles
  12. False
  13. cannot be undone
  14. not needed
  15. saturated
  16. freezing water
  17. dissolves in water
  18. yeast
  19. False
  20. can be undone
  21. we keep it the same
  22. a grown-up
  23. not needed
  24. cannot be undone
  25. cooking oil
  26. glucose powder
  27. False
  28. False
  29. True
  30. sea water evaporates
  31. dissolving salt
  32. needed
  33. dissolves in water
  34. cannot be undone
  35. sand
  36. food colour
  37. we keep it the same
  38. folding paper
  39. cannot be undone
  40. sugar crystals form

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