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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 41 · 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.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a piece of string (d) a battery cell
  2. 2.True or false: baking soda does not dissolve in water. (a) False (b) True
  3. 3.🛟 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
  4. 4.True or false: melting ice is a change that can be undone. (a) False (b) True
  5. 5.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) safe from small children (c) next to the baby (d) on the edge of a table
  6. 6.🔍 Which is the odd one out? (a) table salt (b) baking soda (c) sand (d) glucose powder
  7. 7.🧂 Which of these dissolves in water? (a) glucose powder (b) chalk powder (c) sand (d) cooking oil
  8. 8.🔍 Which is the odd one out? (a) sugar (b) baking soda (c) small pebbles (d) table salt
  9. 9.🔍 Which is the odd one out? (a) small pebbles (b) sawdust (c) food colour (d) sand
  10. 10.True or false: chalk powder dissolves in water. (a) True (b) False
  11. 11.🔍 Which is the odd one out? (a) cooking oil (b) small pebbles (c) table salt (d) sawdust
  12. 12.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
  13. 13.⚖️ 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
  14. 14.True or false: rusting iron is a change that can be undone. (a) False (b) True
  15. 15.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) rusting iron (c) folding paper (d) baking a cake
  16. 16.True or false: melting butter is a change that can be undone. (a) False (b) True
  17. 17.True or false: yeast is needed for growing salt crystals. (a) True (b) False
  18. 18.🧂 Which of these dissolves in water? (a) cooking oil (b) sand (c) baking soda (d) sawdust
  19. 19.🧈 Which of these is a change that can be undone? (a) rusting iron (b) milk turning to curd (c) freezing water (d) cooking an egg
  20. 20.🧂 Which of these does not dissolve in water? (a) small pebbles (b) glucose powder (c) table salt (d) food colour
  21. 21.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) saturated (c) empty (d) magnetic
  22. 22.⚖️ 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
  23. 23.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
  24. 24.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
  25. 25.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny triangles (c) tiny stars (d) tiny cubes
  26. 26.🧈 Which of these is a change that can be undone? (a) rusting iron (b) melting butter (c) browning lemon ink (d) milk turning to curd
  27. 27.True or false: table salt does not dissolve in water. (a) True (b) False
  28. 28.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) a spoon (d) a magnet
  29. 29.⚖️ 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 keep it the same (b) we change it (c) we measure it
  30. 30.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) salt (c) turmeric powder (d) a spoon
  31. 31.🧺 Which of these is not needed for growing salt crystals? (a) a mirror (b) a shallow dish (c) a piece of string (d) warm water
  32. 32.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
  33. 33.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a shallow dish (c) a balloon (d) a magnet
  34. 34.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) freezing water (c) rusting iron (d) melting butter
  35. 35.True or false: a battery cell is needed for growing salt crystals. (a) False (b) True
  36. 36.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) False (b) True
  37. 37.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
  38. 38.True or false: melting ice is a change that cannot be undone. (a) False (b) True
  39. 39.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
  40. 40.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone

Answer key

  1. a battery cell
  2. False
  3. a grown-up
  4. True
  5. safe from small children
  6. sand
  7. glucose powder
  8. small pebbles
  9. food colour
  10. False
  11. table salt
  12. cannot be undone
  13. we keep it the same
  14. False
  15. folding paper
  16. True
  17. False
  18. baking soda
  19. freezing water
  20. small pebbles
  21. saturated
  22. sunny or shady place
  23. cannot be undone
  24. needed
  25. tiny cubes
  26. melting butter
  27. False
  28. a magnet
  29. we keep it the same
  30. turmeric powder
  31. a mirror
  32. does not dissolve
  33. a shallow dish
  34. rusting iron
  35. False
  36. False
  37. cannot be undone
  38. False
  39. needed
  40. cannot be undone

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