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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 157 · 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.

NameDateTime takenScore ___ / 40
  1. 1.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) True (b) False
  2. 2.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
  3. 3.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
  4. 4.True or false: food colour does not dissolve in water. (a) False (b) True
  5. 5.⚖️ 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) False (b) True
  6. 6.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
  7. 7.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) yeast (c) turmeric powder (d) warm water
  8. 8.True or false: baking soda dissolves in water. (a) False (b) True
  9. 9.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) salt rains down (c) sea water evaporates (d) sand is ground up
  10. 10.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a magnet (c) a battery cell (d) salt
  11. 11.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it turns sweet (c) it fizzes (d) few or no crystals
  12. 12.🔍 Which is the odd one out? (a) small pebbles (b) sawdust (c) table salt (d) chalk powder
  13. 13.True or false: rusting iron is a change that can be undone. (a) True (b) False
  14. 14.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
  15. 15.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False
  16. 16.⚖️ 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
  17. 17.True or false: a spoon is needed for growing salt crystals. (a) True (b) False
  18. 18.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) a mirror (d) salt
  19. 19.🧈 Which of these is a change that can be undone? (a) folding paper (b) baking a cake (c) browning lemon ink (d) milk turning to curd
  20. 20.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot 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 same dish”? (a) we change it (b) we measure it (c) we keep it the same
  22. 22.🧂 Which of these dissolves in water? (a) cooking oil (b) sand (c) chalk powder (d) sugar
  23. 23.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) smaller crystals (c) liquid crystals (d) bigger crystals
  24. 24.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
  25. 25.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
  26. 26.True or false: melting ice is a change that can be undone. (a) False (b) True
  27. 27.⚖️ 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 same dish (b) days to see crystals (c) sunny or shady place (d) the amount of water
  28. 28.True or false: rusting iron is a change that cannot be undone. (a) False (b) True
  29. 29.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) yeast (c) warm water (d) a shallow dish
  30. 30.🧂 Which of these dissolves in water? (a) sawdust (b) sand (c) small pebbles (d) food colour
  31. 31.🧂 Which of these dissolves in water? (a) sand (b) cooking oil (c) small pebbles (d) baking soda
  32. 32.🧂 Which of these does not dissolve in water? (a) baking soda (b) sand (c) glucose powder (d) sugar
  33. 33.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
  34. 34.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) a spoon (c) warm water (d) a shallow dish
  35. 35.True or false: a balloon is not needed for growing salt crystals. (a) True (b) False
  36. 36.🔍 Which is the odd one out? (a) small pebbles (b) food colour (c) sawdust (d) chalk powder
  37. 37.True or false: cooking oil dissolves in water. (a) False (b) True
  38. 38.🧂 Which of these does not dissolve in water? (a) baking soda (b) glucose powder (c) cooking oil (d) food colour
  39. 39.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
  40. 40.True or false: a balloon is needed for growing salt crystals. (a) False (b) True

Answer key

  1. True
  2. False
  3. does not dissolve
  4. False
  5. True
  6. True
  7. warm water
  8. True
  9. sea water evaporates
  10. salt
  11. few or no crystals
  12. table salt
  13. False
  14. not needed
  15. False
  16. we change it
  17. True
  18. a mirror
  19. folding paper
  20. can be undone
  21. we keep it the same
  22. sugar
  23. bigger crystals
  24. a grown-up
  25. does not dissolve
  26. True
  27. sunny or shady place
  28. True
  29. yeast
  30. food colour
  31. baking soda
  32. sand
  33. dissolves in water
  34. a battery cell
  35. True
  36. food colour
  37. False
  38. cooking oil
  39. not needed
  40. False

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