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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 342 · 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.⚖️ 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
  2. 2.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
  3. 3.⚖️ 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) the same dish (c) sunny or shady place (d) the kind of salt
  4. 4.🧂 Which of these dissolves in water? (a) chalk powder (b) sawdust (c) sand (d) baking soda
  5. 5.🔍 Which is the odd one out? (a) food colour (b) table salt (c) small pebbles (d) baking soda
  6. 6.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
  7. 7.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) warm water (c) a spoon (d) turmeric powder
  8. 8.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
  9. 9.True or false: sawdust does not dissolve in water. (a) True (b) False
  10. 10.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) saturated (c) empty (d) magnetic
  11. 11.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
  12. 12.🧂 Which of these does not dissolve in water? (a) cooking oil (b) glucose powder (c) baking soda (d) sugar
  13. 13.True or false: warm water is needed for growing salt crystals. (a) True (b) False
  14. 14.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) it turns to oil (c) salt crystals form (d) sugar crystals form
  15. 15.🧂 Which of these does not dissolve in water? (a) table salt (b) baking soda (c) sugar (d) sand
  16. 16.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
  17. 17.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) True (b) False
  18. 18.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it turns sweet (c) few or no crystals (d) it fizzes
  19. 19.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the amount of water (b) the amount of salt (c) days to see crystals (d) the same dish
  20. 20.True or false: yeast is needed for growing salt crystals. (a) True (b) False
  21. 21.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) freezing water (c) melting butter (d) cooking an egg
  22. 22.True or false: rusting iron is a change that can be undone. (a) True (b) False
  23. 23.🧂 Why do we stir in salt until no more will dissolve? (a) to cool the water (b) to make it fizz (c) to make it very salty (d) to change its colour
  24. 24.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) rusting iron (c) folding paper (d) browning lemon ink
  25. 25.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
  26. 26.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) dissolving salt (c) melting butter (d) baking a cake
  27. 27.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
  28. 28.True or false: food colour does not dissolve in water. (a) True (b) False
  29. 29.🌊 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
  30. 30.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
  31. 31.True or false: melting ice is a change that cannot be undone. (a) False (b) True
  32. 32.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
  33. 33.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
  34. 34.True or false: small pebbles does not dissolve in water. (a) False (b) True
  35. 35.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
  36. 36.True or false: melting butter is a change that cannot be undone. (a) True (b) False
  37. 37.🧂 Which of these does not dissolve in water? (a) baking soda (b) food colour (c) small pebbles (d) sugar
  38. 38.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a shallow dish (c) a mirror (d) warm water
  39. 39.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) a piece of string (c) salt (d) a shallow dish
  40. 40.🧂 Which of these dissolves in water? (a) table salt (b) small pebbles (c) chalk powder (d) cooking oil

Answer key

  1. we keep it the same
  2. dissolves in water
  3. sunny or shady place
  4. baking soda
  5. small pebbles
  6. a grown-up
  7. turmeric powder
  8. dissolves in water
  9. True
  10. saturated
  11. True
  12. cooking oil
  13. True
  14. sugar crystals form
  15. sand
  16. needed
  17. True
  18. few or no crystals
  19. days to see crystals
  20. False
  21. cooking an egg
  22. False
  23. to make it very salty
  24. folding paper
  25. needed
  26. baking a cake
  27. cannot be undone
  28. False
  29. sea water evaporates
  30. False
  31. False
  32. False
  33. can be undone
  34. True
  35. needed
  36. False
  37. small pebbles
  38. a mirror
  39. a battery cell
  40. table salt

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