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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 234 · 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.True or false: melting butter is a change that cannot be undone. (a) True (b) False
  2. 2.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
  3. 3.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
  4. 4.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
  5. 5.⚖️ 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 measure it (b) we keep it the same (c) we change it
  6. 6.⚖️ 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
  7. 7.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) yeast (c) a spoon (d) a shallow dish
  8. 8.True or false: chalk powder does not dissolve in water. (a) False (b) True
  9. 9.🔍 Which is the odd one out? (a) table salt (b) glucose powder (c) cooking oil (d) sugar
  10. 10.True or false: baking soda dissolves in water. (a) False (b) True
  11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) days to see crystals (b) sunny or shady place (c) the amount of salt (d) the amount of water
  12. 12.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
  13. 13.True or false: salt is needed for growing salt crystals. (a) False (b) True
  14. 14.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it turns sweet (c) it fizzes (d) few or no crystals
  15. 15.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
  16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) warm water (c) a magnet (d) salt
  17. 17.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
  18. 18.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
  19. 19.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a piece of string (c) turmeric powder (d) a magnet
  20. 20.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a battery cell (c) salt (d) a balloon
  21. 21.True or false: dissolving salt is a change that cannot be undone. (a) False (b) True
  22. 22.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
  23. 23.True or false: sand does not dissolve in water. (a) False (b) True
  24. 24.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) sunny or shady place (b) days to see crystals (c) the same dish
  25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a mirror (c) a piece of string (d) a shallow dish
  26. 26.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
  27. 27.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
  28. 28.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) sugar crystals form (c) it turns to butter (d) it turns to oil
  29. 29.🧈 Which of these is a change that can be undone? (a) baking a cake (b) cooking an egg (c) rusting iron (d) melting butter
  30. 30.True or false: baking soda does not dissolve in water. (a) False (b) True
  31. 31.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a battery cell (d) a piece of string
  32. 32.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) no crystals (c) liquid crystals (d) smaller crystals
  33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is what we measure. (a) False (b) True
  34. 34.True or false: a magnet is needed for growing salt crystals. (a) False (b) True
  35. 35.🧂 Which of these does not dissolve in water? (a) baking soda (b) table salt (c) sugar (d) sawdust
  36. 36.🔍 Which is the odd one out? (a) sugar (b) glucose powder (c) sawdust (d) table salt
  37. 37.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) saturated (c) magnetic (d) empty
  38. 38.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny stars (c) tiny triangles (d) tiny cubes
  39. 39.True or false: sugar dissolves in water. (a) False (b) True
  40. 40.True or false: baking a cake is a change that can be undone. (a) True (b) False

Answer key

  1. False
  2. a grown-up
  3. needed
  4. does not dissolve
  5. we change it
  6. we keep it the same
  7. yeast
  8. True
  9. cooking oil
  10. True
  11. days to see crystals
  12. dissolves in water
  13. True
  14. few or no crystals
  15. needed
  16. a magnet
  17. needed
  18. not needed
  19. a piece of string
  20. salt
  21. False
  22. dissolves in water
  23. True
  24. the same dish
  25. a mirror
  26. not needed
  27. dissolves in water
  28. sugar crystals form
  29. melting butter
  30. False
  31. a battery cell
  32. bigger crystals
  33. False
  34. False
  35. sawdust
  36. sawdust
  37. saturated
  38. tiny cubes
  39. True
  40. False

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