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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 124 · 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.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
  2. 2.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) few or no crystals (c) it turns sweet (d) crystals grow faster
  3. 3.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny cubes (c) tiny stars (d) tiny spheres
  4. 4.True or false: chalk powder dissolves in water. (a) True (b) False
  5. 5.True or false: cooking oil dissolves in water. (a) True (b) False
  6. 6.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) on the edge of a table (c) safe from small children (d) next to the baby
  7. 7.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) smaller crystals (c) bigger crystals (d) liquid crystals
  8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) warm water (c) a magnet (d) a shallow dish
  9. 9.True or false: warm water is needed for growing salt crystals. (a) False (b) True
  10. 10.🧺 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) yeast
  11. 11.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
  12. 12.🧂 Which of these dissolves in water? (a) glucose powder (b) sand (c) sawdust (d) cooking oil
  13. 13.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
  14. 14.True or false: a mirror is not needed for growing salt crystals. (a) False (b) True
  15. 15.🧈 Which of these is a change that can be undone? (a) dissolving salt (b) browning lemon ink (c) rusting iron (d) baking a cake
  16. 16.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) fish make it (c) salt rains down (d) sea water evaporates
  17. 17.⚖️ 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 change it (b) we measure it (c) we keep it the same
  18. 18.True or false: sand dissolves in water. (a) False (b) True
  19. 19.True or false: cooking an egg is a change that cannot be undone. (a) False (b) True
  20. 20.🧂 Which of these does not dissolve in water? (a) baking soda (b) table salt (c) cooking oil (d) sugar
  21. 21.🔮 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
  22. 22.⚖️ 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) False (b) True
  23. 23.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
  24. 24.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
  25. 25.⚖️ 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 same dish (b) sunny or shady place (c) the kind of salt (d) days to see crystals
  26. 26.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
  27. 27.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
  28. 28.🧈 Which of these is a change that cannot be undone? (a) baking a cake (b) folding paper (c) dissolving salt (d) freezing water
  29. 29.True or false: baking a cake is a change that cannot be undone. (a) True (b) False
  30. 30.⚖️ 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 change it (c) we keep it the same
  31. 31.⚖️ 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) True (b) False
  32. 32.True or false: freezing water is a change that cannot be undone. (a) True (b) False
  33. 33.True or false: folding paper is a change that can be undone. (a) True (b) False
  34. 34.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) warm water (c) turmeric powder (d) salt
  35. 35.🔍 Which is the odd one out? (a) chalk powder (b) glucose powder (c) small pebbles (d) sand
  36. 36.True or false: a piece of string is needed for growing salt crystals. (a) True (b) False
  37. 37.True or false: sawdust dissolves in water. (a) False (b) True
  38. 38.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
  39. 39.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) sugar (d) sawdust
  40. 40.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water

Answer key

  1. dissolves in water
  2. few or no crystals
  3. tiny cubes
  4. False
  5. False
  6. safe from small children
  7. bigger crystals
  8. a magnet
  9. True
  10. yeast
  11. not needed
  12. glucose powder
  13. not needed
  14. True
  15. dissolving salt
  16. sea water evaporates
  17. we keep it the same
  18. False
  19. True
  20. cooking oil
  21. sugar crystals form
  22. True
  23. not needed
  24. cannot be undone
  25. sunny or shady place
  26. needed
  27. needed
  28. baking a cake
  29. True
  30. we keep it the same
  31. True
  32. False
  33. True
  34. turmeric powder
  35. glucose powder
  36. True
  37. False
  38. can be undone
  39. sugar
  40. dissolves in water

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