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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 912 · 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.

NameDateTime takenScore ___ / 40
  1. 1.🧂 Which of these does not dissolve in water? (a) food colour (b) small pebbles (c) glucose powder (d) table salt
  2. 2.True or false: sugar does not dissolve in water. (a) True (b) False
  3. 3.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
  4. 4.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it fizzes (c) it turns sweet (d) few or no crystals
  5. 5.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
  6. 6.True or false: a balloon is needed for growing salt crystals. (a) False (b) True
  7. 7.True or false: warm water is needed for growing salt crystals. (a) True (b) False
  8. 8.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
  9. 9.⚖️ 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) True (b) False
  10. 10.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
  11. 11.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny cubes (c) tiny stars (d) tiny triangles
  12. 12.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
  13. 13.🧂 Which of these dissolves in water? (a) cooking oil (b) chalk powder (c) table salt (d) small pebbles
  14. 14.True or false: baking soda does not dissolve in water. (a) True (b) False
  15. 15.🧺 Which of these is needed for growing salt crystals? (a) a shallow dish (b) yeast (c) a balloon (d) a mirror
  16. 16.⚖️ 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
  17. 17.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
  18. 18.True or false: a battery cell is not needed for growing salt crystals. (a) True (b) False
  19. 19.🧈 Which of these is a change that can be undone? (a) baking a cake (b) cooking an egg (c) browning lemon ink (d) melting butter
  20. 20.True or false: a spoon is needed for growing salt crystals. (a) True (b) False
  21. 21.🧈 Which of these is a change that can be undone? (a) baking a cake (b) cooking an egg (c) browning lemon ink (d) melting ice
  22. 22.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) baking a cake (c) folding paper (d) rusting iron
  23. 23.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) salt (c) a mirror (d) warm water
  24. 24.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
  25. 25.🧺 Do we need a magnet 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? Which of these is kept the same? (a) sunny or shady place (b) days to see crystals (c) the amount of water
  27. 27.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
  28. 28.True or false: sugar dissolves in water. (a) False (b) True
  29. 29.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a piece of string (c) yeast (d) turmeric powder
  30. 30.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) salt rains down (c) fish make it (d) sea water evaporates
  31. 31.🔍 Which is the odd one out? (a) sugar (b) table salt (c) sand (d) food colour
  32. 32.True or false: food colour does not dissolve in water. (a) True (b) False
  33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we change it (b) we measure it (c) we keep it the same
  34. 34.🧂 Which of these dissolves in water? (a) chalk powder (b) sawdust (c) sand (d) glucose powder
  35. 35.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
  36. 36.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) frozen (c) magnetic (d) empty
  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 keep it the same (b) we change it (c) we measure it
  38. 38.True or false: melting butter is a change that can be undone. (a) True (b) False
  39. 39.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
  40. 40.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False

Answer key

  1. small pebbles
  2. False
  3. False
  4. few or no crystals
  5. dissolves in water
  6. False
  7. True
  8. False
  9. False
  10. does not dissolve
  11. tiny cubes
  12. can be undone
  13. table salt
  14. False
  15. a shallow dish
  16. True
  17. needed
  18. True
  19. melting butter
  20. True
  21. melting ice
  22. folding paper
  23. a mirror
  24. not needed
  25. not needed
  26. the amount of water
  27. dissolves in water
  28. True
  29. a piece of string
  30. sea water evaporates
  31. sand
  32. False
  33. we keep it the same
  34. glucose powder
  35. needed
  36. saturated
  37. we keep it the same
  38. True
  39. cannot be undone
  40. False

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