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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 532 · 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 use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) salt crystals form (c) it turns to oil (d) it turns to butter
  2. 2.🧂 Which of these dissolves in water? (a) chalk powder (b) baking soda (c) sand (d) cooking oil
  3. 3.True or false: table salt does not dissolve in water. (a) False (b) True
  4. 4.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
  5. 5.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
  6. 6.True or false: sugar does not dissolve in water. (a) True (b) False
  7. 7.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny spheres (c) tiny triangles (d) tiny stars
  8. 8.🛟 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
  9. 9.⚖️ 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 measure it (b) we change it (c) we keep it the same
  10. 10.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) smaller crystals (c) bigger crystals (d) no crystals
  11. 11.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a battery cell (c) a shallow dish (d) warm water
  12. 12.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the kind of salt (b) sunny or shady place (c) days to see crystals
  13. 13.True or false: melting ice is a change that can be undone. (a) True (b) False
  14. 14.True or false: cooking oil dissolves in water. (a) False (b) True
  15. 15.⚖️ 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
  16. 16.🔍 Which is the odd one out? (a) sawdust (b) small pebbles (c) cooking oil (d) table salt
  17. 17.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a spoon (c) a magnet (d) salt
  18. 18.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) melting ice (c) baking a cake (d) browning lemon ink
  19. 19.⚖️ 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 keep it the same (b) we measure it (c) we change it
  20. 20.🧺 Which of these is not needed for growing salt crystals? (a) yeast (b) salt (c) warm water (d) a shallow dish
  21. 21.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
  22. 22.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
  23. 23.🧂 Which of these does not dissolve in water? (a) sugar (b) chalk powder (c) food colour (d) table salt
  24. 24.True or false: sand does not dissolve in water. (a) False (b) True
  25. 25.🧂 Which of these dissolves in water? (a) sawdust (b) glucose powder (c) small pebbles (d) cooking oil
  26. 26.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
  27. 27.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) it turns sweet (c) crystals grow faster (d) few or no crystals
  28. 28.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) sand is ground up (c) fish make it (d) sea water evaporates
  29. 29.True or false: salt is not needed for growing salt crystals. (a) True (b) False
  30. 30.🧈 Which of these is a change that can be undone? (a) rusting iron (b) browning lemon ink (c) milk turning to curd (d) melting butter
  31. 31.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
  32. 32.True or false: glucose powder does not dissolve in water. (a) True (b) False
  33. 33.True or false: food colour does not dissolve in water. (a) False (b) True
  34. 34.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) cooking an egg (c) baking a cake (d) folding paper
  35. 35.🧂 Which of these does not dissolve in water? (a) table salt (b) sugar (c) baking soda (d) small pebbles
  36. 36.True or false: browning lemon ink is a change that can be undone. (a) False (b) True
  37. 37.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
  38. 38.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
  39. 39.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
  40. 40.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed

Answer key

  1. sugar crystals form
  2. baking soda
  3. False
  4. needed
  5. does not dissolve
  6. False
  7. tiny cubes
  8. safe from small children
  9. we keep it the same
  10. bigger crystals
  11. a battery cell
  12. the kind of salt
  13. True
  14. False
  15. False
  16. table salt
  17. a magnet
  18. melting ice
  19. we measure it
  20. yeast
  21. does not dissolve
  22. cannot be undone
  23. chalk powder
  24. True
  25. glucose powder
  26. dissolves in water
  27. few or no crystals
  28. sea water evaporates
  29. False
  30. melting butter
  31. not needed
  32. False
  33. False
  34. folding paper
  35. small pebbles
  36. False
  37. does not dissolve
  38. False
  39. dissolves in water
  40. not needed

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