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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 254 · 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 of these dissolves in water? (a) cooking oil (b) glucose powder (c) small pebbles (d) sand
  2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a mirror (d) warm water
  3. 3.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is what we measure. (a) False (b) True
  4. 4.True or false: rusting iron is a change that cannot be undone. (a) True (b) False
  5. 5.🧈 Which of these is a change that cannot be undone? (a) browning lemon ink (b) melting ice (c) melting butter (d) dissolving salt
  6. 6.⚖️ 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
  7. 7.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a balloon (c) warm water (d) yeast
  8. 8.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny stars (c) tiny cubes (d) tiny spheres
  9. 9.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
  10. 10.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) it turns to oil (c) sugar crystals form (d) salt crystals form
  11. 11.🔍 Which is the odd one out? (a) glucose powder (b) chalk powder (c) food colour (d) table salt
  12. 12.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
  13. 13.⚖️ 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 salt (b) sunny or shady place (c) the same dish (d) the amount of water
  14. 14.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
  15. 15.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
  16. 16.🧂 Why do we stir in salt until no more will dissolve? (a) to make it fizz (b) to cool the water (c) to change its colour (d) to make it very salty
  17. 17.True or false: glucose powder dissolves in water. (a) False (b) True
  18. 18.🧂 Which of these does not dissolve in water? (a) sugar (b) chalk powder (c) table salt (d) baking soda
  19. 19.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
  20. 20.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is the one thing we change. (a) False (b) True
  21. 21.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) on the edge of a table (c) safe from small children (d) in a busy doorway
  22. 22.True or false: sawdust does not dissolve in water. (a) False (b) True
  23. 23.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
  24. 24.True or false: freezing water is a change that can be undone. (a) False (b) True
  25. 25.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) True (b) False
  26. 26.True or false: cooking an egg is a change that can be undone. (a) False (b) True
  27. 27.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
  28. 28.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
  29. 29.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
  30. 30.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) rusting iron (c) freezing water (d) dissolving salt
  31. 31.🌊 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
  32. 32.True or false: baking soda dissolves in water. (a) False (b) True
  33. 33.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) frozen (c) saturated (d) magnetic
  34. 34.True or false: a balloon is not needed for growing salt crystals. (a) False (b) True
  35. 35.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
  36. 36.🔍 Which is the odd one out? (a) table salt (b) food colour (c) sand (d) glucose powder
  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 water”? (a) we keep it the same (b) we measure it (c) we change it
  38. 38.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a magnet (c) yeast (d) a spoon
  39. 39.True or false: cooking oil dissolves in water. (a) False (b) True
  40. 40.True or false: glucose powder does not dissolve in water. (a) False (b) True

Answer key

  1. glucose powder
  2. a mirror
  3. False
  4. True
  5. browning lemon ink
  6. we keep it the same
  7. warm water
  8. tiny cubes
  9. not needed
  10. sugar crystals form
  11. chalk powder
  12. can be undone
  13. sunny or shady place
  14. not needed
  15. dissolves in water
  16. to make it very salty
  17. True
  18. chalk powder
  19. cannot be undone
  20. False
  21. safe from small children
  22. True
  23. False
  24. True
  25. True
  26. False
  27. not needed
  28. needed
  29. cannot be undone
  30. rusting iron
  31. sea water evaporates
  32. True
  33. saturated
  34. True
  35. does not dissolve
  36. sand
  37. we keep it the same
  38. a spoon
  39. False
  40. False

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