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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 437 · 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.🔍 Which is the odd one out? (a) table salt (b) sugar (c) food colour (d) sawdust
  2. 2.🔍 Which is the odd one out? (a) sawdust (b) chalk powder (c) sugar (d) cooking oil
  3. 3.⚖️ 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 measure it (b) we keep it the same (c) we change it
  4. 4.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
  5. 5.True or false: cooking oil dissolves in water. (a) False (b) True
  6. 6.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) crystals grow faster (c) few or no crystals (d) it fizzes
  7. 7.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) frozen (c) magnetic (d) empty
  8. 8.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
  9. 9.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a spoon (c) a shallow dish (d) a magnet
  10. 10.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
  11. 11.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) salt grows roots (c) water evaporates (d) the dish melts
  12. 12.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
  13. 13.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False
  14. 14.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
  15. 15.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a battery cell (c) a piece of string (d) salt
  16. 16.True or false: a magnet is needed for growing salt crystals. (a) False (b) True
  17. 17.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
  18. 18.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
  19. 19.True or false: sand dissolves in water. (a) False (b) True
  20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a shallow dish (c) a battery cell (d) a spoon
  21. 21.True or false: yeast is needed for growing salt crystals. (a) True (b) False
  22. 22.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) salt (c) a balloon (d) yeast
  23. 23.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) sugar crystals form (c) it turns to oil (d) salt crystals form
  24. 24.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is what we measure. (a) False (b) True
  25. 25.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny spheres (c) tiny cubes (d) tiny triangles
  26. 26.🧂 Which of these does not dissolve in water? (a) table salt (b) sugar (c) glucose powder (d) sand
  27. 27.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) milk turning to curd (c) folding paper (d) dissolving salt
  28. 28.🔍 Which is the odd one out? (a) glucose powder (b) sugar (c) sand (d) table salt
  29. 29.🌊 How is salt made in salt pans by the sea? (a) sea water evaporates (b) sand is ground up (c) fish make it (d) salt rains down
  30. 30.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) bigger crystals (c) no crystals (d) smaller crystals
  31. 31.🧺 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
  32. 32.🔍 Which is the odd one out? (a) cooking oil (b) food colour (c) table salt (d) sugar
  33. 33.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) turmeric powder (d) salt
  34. 34.🧂 Which of these dissolves in water? (a) cooking oil (b) sand (c) sugar (d) chalk powder
  35. 35.True or false: baking soda dissolves in water. (a) True (b) False
  36. 36.True or false: sugar dissolves in water. (a) True (b) False
  37. 37.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) safe from small children (c) on the edge of a table (d) next to the baby
  38. 38.🧂 Which of these dissolves in water? (a) table salt (b) cooking oil (c) sawdust (d) small pebbles
  39. 39.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) yeast (c) a battery cell (d) a balloon
  40. 40.🧈 Which of these is a change that cannot be undone? (a) browning lemon ink (b) dissolving salt (c) folding paper (d) freezing water

Answer key

  1. sawdust
  2. sugar
  3. we measure it
  4. False
  5. False
  6. few or no crystals
  7. saturated
  8. needed
  9. a magnet
  10. needed
  11. water evaporates
  12. needed
  13. True
  14. a grown-up
  15. a battery cell
  16. False
  17. does not dissolve
  18. needed
  19. False
  20. a battery cell
  21. False
  22. salt
  23. sugar crystals form
  24. True
  25. tiny cubes
  26. sand
  27. milk turning to curd
  28. sand
  29. sea water evaporates
  30. bigger crystals
  31. a balloon
  32. cooking oil
  33. turmeric powder
  34. sugar
  35. True
  36. True
  37. safe from small children
  38. table salt
  39. a spoon
  40. browning lemon ink

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