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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 783 · 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.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
  2. 2.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) on the edge of a table (c) in a busy doorway (d) safe from small children
  3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) turmeric powder (d) a spoon
  4. 4.True or false: table salt dissolves in water. (a) True (b) False
  5. 5.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
  6. 6.🌊 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
  7. 7.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) yeast (c) a piece of string (d) a shallow dish
  8. 8.True or false: glucose powder does not dissolve in water. (a) False (b) True
  9. 9.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny triangles (c) tiny cubes (d) tiny stars
  10. 10.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
  11. 11.True or false: cooking oil dissolves in water. (a) True (b) False
  12. 12.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
  13. 13.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
  14. 14.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) a balloon (c) a magnet (d) yeast
  15. 15.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) milk turning to curd (c) folding paper (d) browning lemon ink
  16. 16.True or false: cooking oil does not dissolve in water. (a) True (b) False
  17. 17.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
  18. 18.True or false: chalk powder dissolves in water. (a) True (b) False
  19. 19.⚖️ 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 same dish (c) days to see crystals (d) sunny or shady place
  20. 20.🔍 Which is the odd one out? (a) food colour (b) sand (c) sawdust (d) chalk powder
  21. 21.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a shallow dish (c) a balloon (d) salt
  22. 22.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we keep it the same (b) we change it (c) we measure it
  23. 23.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a magnet (c) a spoon (d) salt
  24. 24.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a battery cell (c) warm water (d) yeast
  25. 25.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
  26. 26.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
  27. 27.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
  28. 28.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
  29. 29.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
  30. 30.🧂 Which of these dissolves in water? (a) sugar (b) cooking oil (c) small pebbles (d) chalk powder
  31. 31.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is the one thing we change. (a) True (b) False
  32. 32.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) liquid crystals (c) bigger crystals (d) smaller crystals
  33. 33.🔍 Which is the odd one out? (a) sugar (b) small pebbles (c) sand (d) cooking oil
  34. 34.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is what we measure. (a) True (b) False
  35. 35.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) rusting iron (c) baking a cake (d) melting butter
  36. 36.True or false: baking a cake is a change that cannot be undone. (a) False (b) True
  37. 37.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a balloon (d) a spoon
  38. 38.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) sugar crystals form (c) it turns to butter (d) it turns to oil
  39. 39.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a piece of string (c) a battery cell (d) salt
  40. 40.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed

Answer key

  1. cannot be undone
  2. safe from small children
  3. turmeric powder
  4. True
  5. cannot be undone
  6. sea water evaporates
  7. yeast
  8. False
  9. tiny cubes
  10. False
  11. False
  12. False
  13. needed
  14. a piece of string
  15. folding paper
  16. True
  17. needed
  18. False
  19. sunny or shady place
  20. food colour
  21. a balloon
  22. we change it
  23. a magnet
  24. warm water
  25. not needed
  26. dissolves in water
  27. a grown-up
  28. dissolves in water
  29. True
  30. sugar
  31. False
  32. bigger crystals
  33. sugar
  34. False
  35. melting butter
  36. True
  37. a balloon
  38. sugar crystals form
  39. a battery cell
  40. not needed

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