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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 250 · 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) sawdust (b) cooking oil (c) glucose powder (d) sand
  2. 2.🧂 Which of these does not dissolve in water? (a) glucose powder (b) sugar (c) sawdust (d) baking soda
  3. 3.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) salt (c) a piece of string (d) turmeric powder
  4. 4.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is what we measure. (a) True (b) False
  5. 5.⚖️ 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 measure it (b) we change it (c) we keep it the same
  6. 6.True or false: freezing water is a change that cannot be undone. (a) True (b) False
  7. 7.True or false: baking soda dissolves in water. (a) True (b) False
  8. 8.True or false: rusting iron is a change that can be undone. (a) False (b) True
  9. 9.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
  10. 10.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a battery cell (c) a shallow dish (d) salt
  11. 11.🧂 Which of these does not dissolve in water? (a) glucose powder (b) small pebbles (c) food colour (d) sugar
  12. 12.True or false: table salt dissolves in water. (a) False (b) True
  13. 13.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny cubes (c) tiny stars (d) tiny spheres
  14. 14.True or false: yeast is not needed for growing salt crystals. (a) True (b) False
  15. 15.True or false: a battery cell is needed for growing salt crystals. (a) False (b) True
  16. 16.🔍 Which is the odd one out? (a) glucose powder (b) sand (c) food colour (d) table salt
  17. 17.🧂 Which of these dissolves in water? (a) cooking oil (b) sawdust (c) small pebbles (d) food colour
  18. 18.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
  19. 19.True or false: cooking an egg is a change that cannot be undone. (a) False (b) True
  20. 20.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) it fizzes (c) crystals grow faster (d) few or no crystals
  21. 21.🧂 Which of these does not dissolve in water? (a) cooking oil (b) table salt (c) food colour (d) baking soda
  22. 22.True or false: warm water is not needed for growing salt crystals. (a) False (b) True
  23. 23.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a mirror (c) salt (d) a balloon
  24. 24.🧂 Which of these dissolves in water? (a) sawdust (b) chalk powder (c) table salt (d) cooking oil
  25. 25.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
  26. 26.⚖️ 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) False (b) True
  27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) True (b) False
  28. 28.True or false: food colour does not dissolve in water. (a) True (b) False
  29. 29.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
  30. 30.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) sea water evaporates (c) fish make it (d) salt rains down
  31. 31.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) water evaporates (c) the dish melts (d) salt eats water
  32. 32.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a balloon (c) a battery cell (d) warm water
  33. 33.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a piece of string (c) a shallow dish (d) a balloon
  34. 34.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) False (b) True
  35. 35.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) rusting iron (c) folding paper (d) freezing water
  36. 36.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
  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 salt”? (a) we measure it (b) we keep it the same (c) we change it
  38. 38.True or false: table salt does not dissolve in water. (a) True (b) False
  39. 39.True or false: glucose powder does not dissolve in water. (a) True (b) False
  40. 40.⚖️ 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 salt

Answer key

  1. glucose powder
  2. sawdust
  3. turmeric powder
  4. False
  5. we keep it the same
  6. False
  7. True
  8. False
  9. a grown-up
  10. a battery cell
  11. small pebbles
  12. True
  13. tiny cubes
  14. True
  15. False
  16. sand
  17. food colour
  18. needed
  19. True
  20. few or no crystals
  21. cooking oil
  22. False
  23. salt
  24. table salt
  25. needed
  26. True
  27. True
  28. False
  29. False
  30. sea water evaporates
  31. water evaporates
  32. warm water
  33. a balloon
  34. False
  35. rusting iron
  36. False
  37. we keep it the same
  38. False
  39. False
  40. sunny or shady place

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