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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 838 · 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 is not needed for growing salt crystals? (a) a shallow dish (b) warm water (c) salt (d) a balloon
  2. 2.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
  3. 3.🧈 Which of these is a change that can be undone? (a) folding paper (b) browning lemon ink (c) milk turning to curd (d) baking a cake
  4. 4.🧂 Which of these dissolves in water? (a) sawdust (b) baking soda (c) sand (d) cooking oil
  5. 5.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we change it (b) we measure it (c) we keep it the same
  6. 6.⚖️ 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) the kind of salt (c) the same dish (d) sunny or shady place
  7. 7.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
  8. 8.True or false: warm water is not needed for growing salt crystals. (a) False (b) True
  9. 9.True or false: baking a cake is a change that cannot be undone. (a) False (b) True
  10. 10.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is what we measure. (a) True (b) False
  11. 11.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
  12. 12.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
  13. 13.🌊 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
  14. 14.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
  15. 15.⚖️ 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
  16. 16.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
  17. 17.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
  18. 18.🧂 Which of these does not dissolve in water? (a) glucose powder (b) baking soda (c) food colour (d) cooking oil
  19. 19.True or false: chalk powder dissolves in water. (a) True (b) False
  20. 20.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
  21. 21.True or false: a piece of string is needed for growing salt crystals. (a) False (b) True
  22. 22.True or false: browning lemon ink is a change that can be undone. (a) True (b) False
  23. 23.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it turns sweet (c) few or no crystals (d) it fizzes
  24. 24.⚖️ 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
  25. 25.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
  26. 26.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) warm water (c) salt (d) a magnet
  27. 27.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
  28. 28.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
  29. 29.🔍 Which is the odd one out? (a) small pebbles (b) food colour (c) chalk powder (d) sand
  30. 30.True or false: salt is not needed for growing salt crystals. (a) True (b) False
  31. 31.True or false: chalk powder does not dissolve in water. (a) False (b) True
  32. 32.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a shallow dish (c) salt (d) a mirror
  33. 33.True or false: cooking oil dissolves in water. (a) False (b) True
  34. 34.True or false: melting ice is a change that can be undone. (a) True (b) False
  35. 35.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) a battery cell (c) a balloon (d) a magnet
  36. 36.🧂 Which of these does not dissolve in water? (a) food colour (b) sugar (c) small pebbles (d) table salt
  37. 37.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny triangles (c) tiny cubes (d) tiny spheres
  38. 38.🧂 Which of these dissolves in water? (a) sawdust (b) sand (c) sugar (d) small pebbles
  39. 39.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
  40. 40.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a mirror (c) a piece of string (d) warm water

Answer key

  1. a balloon
  2. not needed
  3. folding paper
  4. baking soda
  5. we measure it
  6. sunny or shady place
  7. not needed
  8. False
  9. True
  10. False
  11. can be undone
  12. does not dissolve
  13. sea water evaporates
  14. does not dissolve
  15. True
  16. a grown-up
  17. dissolves in water
  18. cooking oil
  19. False
  20. does not dissolve
  21. True
  22. False
  23. few or no crystals
  24. True
  25. not needed
  26. a magnet
  27. not needed
  28. cannot be undone
  29. food colour
  30. False
  31. True
  32. a mirror
  33. False
  34. True
  35. a piece of string
  36. small pebbles
  37. tiny cubes
  38. sugar
  39. does not dissolve
  40. a mirror

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