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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 135 · 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.

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

Answer key

  1. we change it
  2. True
  3. needed
  4. needed
  5. not needed
  6. False
  7. False
  8. few or no crystals
  9. a grown-up
  10. False
  11. needed
  12. False
  13. a spoon
  14. a battery cell
  15. not needed
  16. warm water
  17. False
  18. the same dish
  19. False
  20. False
  21. a balloon
  22. True
  23. does not dissolve
  24. cooking an egg
  25. True
  26. sugar
  27. a magnet
  28. water evaporates
  29. a magnet
  30. cannot be undone
  31. days to see crystals
  32. chalk powder
  33. melting ice
  34. sugar crystals form
  35. tiny cubes
  36. True
  37. False
  38. can be undone
  39. True
  40. True

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