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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 689 · 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.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it turns sweet (c) crystals grow faster (d) it fizzes
  2. 2.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) salt (c) warm water (d) turmeric powder
  3. 3.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
  4. 4.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a magnet (c) a mirror (d) a shallow dish
  5. 5.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
  6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a balloon (d) a spoon
  7. 7.True or false: small pebbles dissolves in water. (a) False (b) True
  8. 8.🧈 Which of these is a change that cannot be undone? (a) rusting iron (b) dissolving salt (c) melting ice (d) folding paper
  9. 9.🧂 Which of these does not dissolve in water? (a) sand (b) sugar (c) baking soda (d) table salt
  10. 10.⚖️ 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 keep it the same (b) we change it (c) we measure it
  11. 11.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
  12. 12.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) melting butter (c) dissolving salt (d) milk turning to curd
  13. 13.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is what we measure. (a) False (b) True
  14. 14.True or false: folding paper is a change that can be undone. (a) False (b) True
  15. 15.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
  16. 16.🧂 Which of these does not dissolve in water? (a) sugar (b) baking soda (c) table salt (d) sawdust
  17. 17.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
  18. 18.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) safe from small children (c) next to the baby (d) in a busy doorway
  19. 19.True or false: salt is needed for growing salt crystals. (a) True (b) False
  20. 20.🔍 Which is the odd one out? (a) small pebbles (b) sand (c) table salt (d) chalk powder
  21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a battery cell (c) a shallow dish (d) salt
  22. 22.True or false: small pebbles does not dissolve in water. (a) True (b) False
  23. 23.🔍 Which is the odd one out? (a) sugar (b) small pebbles (c) table salt (d) glucose powder
  24. 24.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) freezing water (c) folding paper (d) browning lemon ink
  25. 25.🔍 Which is the odd one out? (a) small pebbles (b) sand (c) baking soda (d) sawdust
  26. 26.True or false: baking soda dissolves in water. (a) True (b) False
  27. 27.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny stars (c) tiny triangles (d) tiny cubes
  28. 28.🧺 Which of these is not needed for growing salt crystals? (a) a battery cell (b) salt (c) a spoon (d) warm water
  29. 29.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) yeast (c) a battery cell (d) a mirror
  30. 30.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) smaller crystals (c) bigger crystals (d) liquid crystals
  31. 31.🌊 How is salt made in salt pans by the sea? (a) sea water evaporates (b) fish make it (c) sand is ground up (d) salt rains down
  32. 32.True or false: sugar dissolves 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 amount of salt”? (a) we keep it the same (b) we measure it (c) we change it
  34. 34.🔍 Which is the odd one out? (a) food colour (b) sand (c) sawdust (d) cooking oil
  35. 35.True or false: folding paper is a change that cannot be undone. (a) False (b) True
  36. 36.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
  37. 37.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
  38. 38.True or false: rusting iron is a change that cannot be undone. (a) False (b) True
  39. 39.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) True (b) False
  40. 40.⚖️ 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 change it (b) we measure it (c) we keep it the same

Answer key

  1. few or no crystals
  2. turmeric powder
  3. needed
  4. a shallow dish
  5. not needed
  6. a balloon
  7. False
  8. rusting iron
  9. sand
  10. we keep it the same
  11. False
  12. milk turning to curd
  13. True
  14. True
  15. needed
  16. sawdust
  17. dissolves in water
  18. safe from small children
  19. True
  20. table salt
  21. a battery cell
  22. True
  23. small pebbles
  24. browning lemon ink
  25. baking soda
  26. True
  27. tiny cubes
  28. a battery cell
  29. a piece of string
  30. bigger crystals
  31. sea water evaporates
  32. True
  33. we keep it the same
  34. food colour
  35. False
  36. dissolves in water
  37. does not dissolve
  38. True
  39. True
  40. we keep it the same

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