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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 995 · 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.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
  2. 2.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a spoon (c) a shallow dish (d) a mirror
  3. 3.True or false: sand does not dissolve in water. (a) False (b) True
  4. 4.🔍 Which is the odd one out? (a) food colour (b) table salt (c) baking soda (d) sand
  5. 5.🔍 Which is the odd one out? (a) small pebbles (b) chalk powder (c) sand (d) food colour
  6. 6.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) bigger crystals (c) liquid crystals (d) no crystals
  7. 7.🔍 Which is the odd one out? (a) table salt (b) glucose powder (c) sugar (d) sawdust
  8. 8.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
  9. 9.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a spoon (c) yeast (d) a mirror
  10. 10.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
  11. 11.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) warm water (c) a balloon (d) yeast
  12. 12.⚖️ 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
  13. 13.🔍 Which is the odd one out? (a) glucose powder (b) chalk powder (c) sugar (d) table salt
  14. 14.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
  15. 15.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
  16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) warm water (d) a balloon
  17. 17.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
  18. 18.True or false: cooking an egg is a change that can be undone. (a) True (b) False
  19. 19.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
  20. 20.True or false: cooking oil does not dissolve in water. (a) True (b) False
  21. 21.True or false: table salt dissolves in water. (a) True (b) False
  22. 22.🧂 Which of these does not dissolve in water? (a) baking soda (b) chalk powder (c) food colour (d) glucose powder
  23. 23.⚖️ 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) the same dish (d) sunny or shady place
  24. 24.🧈 Which of these is a change that can be undone? (a) baking a cake (b) browning lemon ink (c) dissolving salt (d) cooking an egg
  25. 25.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) the youngest child (c) nobody needs to (d) a friend who is running
  26. 26.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) few or no crystals (c) it turns sweet (d) it fizzes
  27. 27.⚖️ 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
  28. 28.True or false: sugar dissolves in water. (a) True (b) False
  29. 29.⚖️ 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 change it (b) we measure it (c) we keep it the same
  30. 30.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny stars (c) tiny cubes (d) tiny spheres
  31. 31.True or false: table salt does not dissolve in water. (a) True (b) False
  32. 32.🧂 Which of these does not dissolve in water? (a) sand (b) baking soda (c) sugar (d) glucose powder
  33. 33.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a magnet (c) salt (d) a shallow dish
  34. 34.⚖️ 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
  35. 35.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a piece of string (c) a spoon (d) turmeric powder
  36. 36.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
  37. 37.🌊 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
  38. 38.🧂 Which of these dissolves in water? (a) sand (b) baking soda (c) sawdust (d) cooking oil
  39. 39.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) milk turning to curd (c) melting ice (d) freezing water
  40. 40.True or false: milk turning to curd is a change that cannot be undone. (a) True (b) False

Answer key

  1. needed
  2. a mirror
  3. True
  4. sand
  5. food colour
  6. bigger crystals
  7. sawdust
  8. can be undone
  9. a spoon
  10. False
  11. warm water
  12. we keep it the same
  13. chalk powder
  14. dissolves in water
  15. can be undone
  16. a balloon
  17. cannot be undone
  18. False
  19. needed
  20. True
  21. True
  22. chalk powder
  23. sunny or shady place
  24. dissolving salt
  25. a grown-up
  26. few or no crystals
  27. False
  28. True
  29. we measure it
  30. tiny cubes
  31. False
  32. sand
  33. a magnet
  34. we keep it the same
  35. turmeric powder
  36. needed
  37. sea water evaporates
  38. baking soda
  39. milk turning to curd
  40. True

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