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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 349 · 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.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a shallow dish (c) a balloon (d) a mirror
  2. 2.🌊 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
  3. 3.🔍 Which is the odd one out? (a) sawdust (b) cooking oil (c) glucose powder (d) small pebbles
  4. 4.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
  5. 5.🔍 Which is the odd one out? (a) chalk powder (b) table salt (c) small pebbles (d) cooking oil
  6. 6.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is what we measure. (a) False (b) True
  7. 7.⚖️ 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
  8. 8.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False
  9. 9.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
  10. 10.True or false: folding paper is a change that cannot be undone. (a) True (b) False
  11. 11.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny triangles (c) tiny cubes (d) tiny spheres
  12. 12.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
  13. 13.⚖️ 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
  14. 14.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
  15. 15.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
  16. 16.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) baking a cake (c) melting butter (d) folding paper
  17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a mirror (c) a spoon (d) warm water
  18. 18.🧂 Which of these does not dissolve in water? (a) table salt (b) baking soda (c) sugar (d) small pebbles
  19. 19.True or false: baking soda dissolves in water. (a) True (b) False
  20. 20.🔮 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
  21. 21.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
  22. 22.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) yeast (c) warm water (d) a balloon
  23. 23.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
  24. 24.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
  25. 25.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
  26. 26.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) warm water (c) a spoon (d) a magnet
  27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) True (b) False
  28. 28.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) bigger crystals (c) no crystals (d) liquid crystals
  29. 29.🧂 Which of these does not dissolve in water? (a) baking soda (b) sugar (c) food colour (d) sand
  30. 30.⚖️ 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 amount of salt (c) sunny or shady place (d) the amount of water
  31. 31.True or false: chalk powder does not dissolve in water. (a) True (b) False
  32. 32.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
  33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is the one thing we change. (a) True (b) False
  34. 34.🧈 Which of these is a change that can be undone? (a) melting butter (b) cooking an egg (c) baking a cake (d) browning lemon ink
  35. 35.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
  36. 36.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
  37. 37.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) freezing water (c) milk turning to curd (d) rusting iron
  38. 38.True or false: folding paper is a change that can be undone. (a) True (b) False
  39. 39.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
  40. 40.🔍 Which is the odd one out? (a) cooking oil (b) sand (c) small pebbles (d) baking soda

Answer key

  1. a shallow dish
  2. sea water evaporates
  3. glucose powder
  4. not needed
  5. table salt
  6. False
  7. False
  8. True
  9. cannot be undone
  10. False
  11. tiny cubes
  12. needed
  13. we change it
  14. can be undone
  15. False
  16. baking a cake
  17. a mirror
  18. small pebbles
  19. True
  20. few or no crystals
  21. can be undone
  22. warm water
  23. needed
  24. False
  25. a grown-up
  26. a magnet
  27. True
  28. bigger crystals
  29. sand
  30. sunny or shady place
  31. True
  32. not needed
  33. False
  34. melting butter
  35. can be undone
  36. does not dissolve
  37. freezing water
  38. True
  39. cannot be undone
  40. baking soda

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