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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 634 · 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) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
  3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a magnet (c) warm water (d) a spoon
  4. 4.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) salt crystals form (c) it turns to butter (d) sugar crystals form
  5. 5.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
  6. 6.True or false: freezing water is a change that cannot be undone. (a) True (b) False
  7. 7.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny cubes (c) tiny spheres (d) tiny triangles
  8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) warm water (d) a battery cell
  9. 9.🧂 Which of these dissolves in water? (a) food colour (b) sand (c) sawdust (d) cooking oil
  10. 10.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
  11. 11.🛟 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
  12. 12.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a mirror (c) turmeric powder (d) a piece of string
  13. 13.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
  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.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
  16. 16.True or false: glucose powder does not dissolve in water. (a) False (b) True
  17. 17.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
  18. 18.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
  19. 19.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a piece of string (c) turmeric powder (d) salt
  20. 20.True or false: yeast is needed for growing salt crystals. (a) True (b) False
  21. 21.True or false: chalk powder dissolves in water. (a) False (b) True
  22. 22.True or false: a magnet is not needed for growing salt crystals. (a) True (b) False
  23. 23.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
  24. 24.🧂 Which of these does not dissolve in water? (a) sand (b) table salt (c) sugar (d) food colour
  25. 25.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a piece of string (c) warm water (d) turmeric powder
  26. 26.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is kept the same. (a) False (b) True
  27. 27.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
  28. 28.⚖️ 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) False (b) True
  29. 29.🧂 Why do we stir in salt until no more will dissolve? (a) to make it fizz (b) to change its colour (c) to cool the water (d) to make it very salty
  30. 30.🧈 Which of these is a change that cannot be undone? (a) baking a cake (b) melting butter (c) dissolving salt (d) melting ice
  31. 31.⚖️ 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 measure it (b) we keep it the same (c) we change it
  32. 32.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
  33. 33.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
  34. 34.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) liquid crystals (c) no crystals (d) bigger crystals
  35. 35.True or false: sugar dissolves in water. (a) True (b) False
  36. 36.🔍 Which is the odd one out? (a) sugar (b) chalk powder (c) table salt (d) baking soda
  37. 37.🧈 Which of these is a change that can be undone? (a) melting butter (b) rusting iron (c) cooking an egg (d) baking a cake
  38. 38.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
  39. 39.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) False (b) True
  40. 40.⚖️ 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 measure it (b) we keep it the same (c) we change it

Answer key

  1. False
  2. a grown-up
  3. a magnet
  4. sugar crystals form
  5. not needed
  6. False
  7. tiny cubes
  8. a battery cell
  9. food colour
  10. not needed
  11. safe from small children
  12. a piece of string
  13. needed
  14. few or no crystals
  15. True
  16. False
  17. needed
  18. not needed
  19. turmeric powder
  20. False
  21. False
  22. True
  23. not needed
  24. sand
  25. turmeric powder
  26. False
  27. dissolves in water
  28. True
  29. to make it very salty
  30. baking a cake
  31. we keep it the same
  32. does not dissolve
  33. False
  34. bigger crystals
  35. True
  36. chalk powder
  37. melting butter
  38. can be undone
  39. True
  40. we keep it the same

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