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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 412 · 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.True or false: cooking oil dissolves in water. (a) True (b) False
  2. 2.🌊 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
  3. 3.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
  4. 4.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting ice (c) melting butter (d) baking a cake
  5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) salt (c) a spoon (d) warm water
  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 water (b) the amount of salt (c) sunny or shady place (d) days to see crystals
  7. 7.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
  8. 8.True or false: baking soda dissolves in water. (a) True (b) False
  9. 9.⚖️ 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 keep it the same (b) we change it (c) we measure it
  10. 10.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a battery cell (d) a shallow dish
  11. 11.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) salt crystals form (c) sugar crystals form (d) it turns to butter
  12. 12.True or false: sand does not dissolve in water. (a) True (b) False
  13. 13.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt eats water (c) water evaporates (d) salt grows roots
  14. 14.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) safe from small children (c) in a busy doorway (d) next to the baby
  15. 15.🧂 Which of these dissolves in water? (a) sand (b) baking soda (c) small pebbles (d) sawdust
  16. 16.True or false: cooking an egg is a change that can be undone. (a) False (b) True
  17. 17.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny stars (c) tiny triangles (d) tiny spheres
  18. 18.True or false: small pebbles does not dissolve in water. (a) False (b) True
  19. 19.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) it turns sweet (c) few or no crystals (d) crystals grow faster
  20. 20.🧈 Which of these is a change that can be undone? (a) melting butter (b) browning lemon ink (c) cooking an egg (d) rusting iron
  21. 21.🔍 Which is the odd one out? (a) chalk powder (b) sawdust (c) sand (d) glucose powder
  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.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
  24. 24.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) yeast (c) salt (d) a shallow dish
  25. 25.True or false: baking a cake is a change that can be undone. (a) True (b) False
  26. 26.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
  27. 27.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
  28. 28.True or false: chalk powder dissolves in water. (a) False (b) True
  29. 29.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
  30. 30.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
  31. 31.True or false: a magnet is not needed for growing salt crystals. (a) True (b) False
  32. 32.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a shallow dish (c) a mirror (d) turmeric powder
  33. 33.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
  34. 34.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a piece of string (c) yeast (d) a balloon
  35. 35.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
  36. 36.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
  37. 37.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) salt (c) a piece of string (d) a magnet
  38. 38.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
  39. 39.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) browning lemon ink (c) freezing water (d) dissolving salt
  40. 40.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) table salt (d) sawdust

Answer key

  1. False
  2. sea water evaporates
  3. cannot be undone
  4. baking a cake
  5. a mirror
  6. sunny or shady place
  7. needed
  8. True
  9. we keep it the same
  10. a battery cell
  11. sugar crystals form
  12. True
  13. water evaporates
  14. safe from small children
  15. baking soda
  16. False
  17. tiny cubes
  18. True
  19. few or no crystals
  20. melting butter
  21. glucose powder
  22. we change it
  23. does not dissolve
  24. yeast
  25. False
  26. cannot be undone
  27. needed
  28. False
  29. a grown-up
  30. needed
  31. True
  32. a shallow dish
  33. does not dissolve
  34. a piece of string
  35. needed
  36. False
  37. a magnet
  38. dissolves in water
  39. browning lemon ink
  40. table salt

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