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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 997 · 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.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
  2. 2.🔍 Which is the odd one out? (a) cooking oil (b) food colour (c) small pebbles (d) sawdust
  3. 3.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True
  4. 4.⚖️ 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) days to see crystals (b) sunny or shady place (c) the kind of salt (d) the amount of salt
  5. 5.🧂 Which of these dissolves in water? (a) sand (b) cooking oil (c) baking soda (d) chalk powder
  6. 6.True or false: cooking an egg is a change that can be undone. (a) False (b) True
  7. 7.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny spheres (c) tiny triangles (d) tiny cubes
  8. 8.True or false: melting ice is a change that cannot be undone. (a) True (b) False
  9. 9.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
  10. 10.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to oil (c) salt crystals form (d) it turns to butter
  11. 11.🧂 Which of these does not dissolve in water? (a) sugar (b) baking soda (c) table salt (d) sawdust
  12. 12.True or false: cooking oil does not dissolve in water. (a) True (b) False
  13. 13.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) a battery cell (c) yeast (d) turmeric powder
  14. 14.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a piece of string (d) a mirror
  15. 15.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
  16. 16.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) warm water (c) yeast (d) salt
  17. 17.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) sand is ground up (c) salt rains down (d) sea water evaporates
  18. 18.True or false: warm water is needed for growing salt crystals. (a) False (b) True
  19. 19.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting butter (c) melting ice (d) browning lemon ink
  20. 20.🔍 Which is the odd one out? (a) small pebbles (b) food colour (c) glucose powder (d) sugar
  21. 21.🧂 Which of these does not dissolve in water? (a) glucose powder (b) table salt (c) chalk powder (d) sugar
  22. 22.⚖️ 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
  23. 23.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) baking a cake (c) melting ice (d) melting butter
  24. 24.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
  25. 25.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) True (b) False
  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) days to see crystals (b) the kind of salt (c) sunny or shady place
  27. 27.🧂 Which of these dissolves in water? (a) chalk powder (b) small pebbles (c) glucose powder (d) sawdust
  28. 28.True or false: sand dissolves in water. (a) True (b) False
  29. 29.True or false: melting butter is a change that can be undone. (a) True (b) False
  30. 30.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a balloon (c) a shallow dish (d) a spoon
  31. 31.🔍 Which is the odd one out? (a) baking soda (b) glucose powder (c) sugar (d) cooking oil
  32. 32.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
  33. 33.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) in a busy doorway (c) safe from small children (d) next to the baby
  34. 34.True or false: salt is not needed for growing salt crystals. (a) False (b) True
  35. 35.True or false: a spoon is needed for growing salt crystals. (a) True (b) False
  36. 36.True or false: a magnet is not needed for growing salt crystals. (a) True (b) False
  37. 37.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
  38. 38.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
  39. 39.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) a piece of string (d) a battery cell
  40. 40.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve

Answer key

  1. a grown-up
  2. food colour
  3. True
  4. sunny or shady place
  5. baking soda
  6. False
  7. tiny cubes
  8. False
  9. can be undone
  10. sugar crystals form
  11. sawdust
  12. True
  13. warm water
  14. a mirror
  15. cannot be undone
  16. yeast
  17. sea water evaporates
  18. True
  19. browning lemon ink
  20. small pebbles
  21. chalk powder
  22. we keep it the same
  23. baking a cake
  24. False
  25. False
  26. the kind of salt
  27. glucose powder
  28. False
  29. True
  30. a balloon
  31. cooking oil
  32. does not dissolve
  33. safe from small children
  34. False
  35. True
  36. True
  37. not needed
  38. cannot be undone
  39. a battery cell
  40. dissolves in water

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