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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 230 · 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? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
  2. 2.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) on the edge of a table (c) next to the baby (d) safe from small children
  3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a battery cell (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 change it (b) we measure it (c) we keep it the same
  5. 5.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
  6. 6.True or false: baking soda dissolves in water. (a) True (b) False
  7. 7.⚖️ 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) sunny or shady place (b) days to see crystals (c) the same dish (d) the amount of water
  8. 8.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
  9. 9.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) smaller crystals (c) bigger crystals (d) liquid crystals
  10. 10.⚖️ 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
  11. 11.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) salt (c) warm water (d) a balloon
  12. 12.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a battery cell (c) turmeric powder (d) a piece of string
  13. 13.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
  14. 14.True or false: cooking an egg is a change that can be undone. (a) True (b) False
  15. 15.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
  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 keep it the same (b) we change it (c) we measure it
  17. 17.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) sea water evaporates (c) sand is ground up (d) salt rains down
  18. 18.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a mirror (c) turmeric powder (d) a spoon
  19. 19.🧂 Why do crystals appear as the dish dries? (a) water evaporates (b) the dish melts (c) salt grows roots (d) salt eats water
  20. 20.True or false: salt is not needed for growing salt crystals. (a) True (b) False
  21. 21.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
  22. 22.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
  23. 23.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
  24. 24.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
  25. 25.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) crystals grow faster (c) it turns sweet (d) it fizzes
  26. 26.🧂 Which of these does not dissolve in water? (a) glucose powder (b) baking soda (c) sugar (d) sawdust
  27. 27.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
  28. 28.True or false: warm water is needed for growing salt crystals. (a) True (b) False
  29. 29.True or false: dissolving salt is a change that can be undone. (a) True (b) False
  30. 30.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny spheres (c) tiny cubes (d) tiny stars
  31. 31.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
  32. 32.True or false: a balloon is not needed for growing salt crystals. (a) True (b) False
  33. 33.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
  34. 34.True or false: cooking oil does not dissolve in water. (a) False (b) True
  35. 35.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
  36. 36.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
  37. 37.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
  38. 38.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a balloon (c) a magnet (d) a shallow dish
  39. 39.True or false: a battery cell is not needed for growing salt crystals. (a) True (b) False
  40. 40.🔍 Which is the odd one out? (a) baking soda (b) food colour (c) small pebbles (d) table salt

Answer key

  1. we keep it the same
  2. safe from small children
  3. a battery cell
  4. we keep it the same
  5. cannot be undone
  6. True
  7. sunny or shady place
  8. does not dissolve
  9. bigger crystals
  10. True
  11. a balloon
  12. a piece of string
  13. needed
  14. False
  15. can be undone
  16. we change it
  17. sea water evaporates
  18. a spoon
  19. water evaporates
  20. False
  21. False
  22. cannot be undone
  23. False
  24. not needed
  25. few or no crystals
  26. sawdust
  27. does not dissolve
  28. True
  29. True
  30. tiny cubes
  31. a grown-up
  32. True
  33. dissolves in water
  34. True
  35. dissolves in water
  36. does not dissolve
  37. not needed
  38. a shallow dish
  39. True
  40. small pebbles

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