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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 445 · 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 a change that can be undone? (a) baking a cake (b) dissolving salt (c) cooking an egg (d) rusting iron
  2. 2.⚖️ 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 change it (c) we measure it
  3. 3.True or false: melting ice is a change that can be undone. (a) True (b) False
  4. 4.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) no crystals (c) liquid crystals (d) smaller crystals
  5. 5.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
  6. 6.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a magnet (c) salt (d) turmeric powder
  7. 7.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
  8. 8.⚖️ 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) False (b) True
  9. 9.⚖️ 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) the kind of salt (b) days to see crystals (c) the same dish (d) sunny or shady place
  10. 10.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
  11. 11.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
  12. 12.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) a balloon (d) salt
  13. 13.True or false: glucose powder does not dissolve in water. (a) True (b) False
  14. 14.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a shallow dish (d) a battery cell
  15. 15.⚖️ 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
  16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) turmeric powder (c) a shallow dish (d) a piece of string
  17. 17.True or false: baking soda dissolves in water. (a) True (b) False
  18. 18.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) False (b) True
  19. 19.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
  20. 20.True or false: sawdust dissolves in water. (a) False (b) True
  21. 21.🧂 Which of these dissolves in water? (a) sand (b) baking soda (c) small pebbles (d) cooking oil
  22. 22.True or false: salt is not needed for growing salt crystals. (a) True (b) False
  23. 23.True or false: chalk powder does not dissolve in water. (a) False (b) True
  24. 24.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) warm water (c) a balloon (d) a shallow dish
  25. 25.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we keep it the same (b) we change it (c) we measure it
  26. 26.🧂 Which of these does not dissolve in water? (a) baking soda (b) food colour (c) sugar (d) chalk powder
  27. 27.True or false: table salt dissolves in water. (a) False (b) True
  28. 28.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
  29. 29.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) a mirror (d) salt
  30. 30.🧂 Which of these does not dissolve in water? (a) food colour (b) table salt (c) sand (d) sugar
  31. 31.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
  32. 32.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
  33. 33.🔍 Which is the odd one out? (a) cooking oil (b) sugar (c) sawdust (d) sand
  34. 34.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
  35. 35.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) safe from small children (c) on the edge of a table (d) in a busy doorway
  36. 36.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a piece of string (c) yeast (d) a spoon
  37. 37.🧂 Which of these does not dissolve in water? (a) sugar (b) table salt (c) small pebbles (d) food colour
  38. 38.True or false: a magnet is not needed for growing salt crystals. (a) False (b) True
  39. 39.🔍 Which is the odd one out? (a) cooking oil (b) baking soda (c) sawdust (d) chalk powder
  40. 40.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) the dish melts (c) salt grows roots (d) water evaporates

Answer key

  1. dissolving salt
  2. we keep it the same
  3. True
  4. bigger crystals
  5. True
  6. salt
  7. a grown-up
  8. True
  9. sunny or shady place
  10. does not dissolve
  11. not needed
  12. a balloon
  13. False
  14. a battery cell
  15. True
  16. turmeric powder
  17. True
  18. True
  19. does not dissolve
  20. False
  21. baking soda
  22. False
  23. True
  24. a balloon
  25. we keep it the same
  26. chalk powder
  27. True
  28. can be undone
  29. a mirror
  30. sand
  31. cannot be undone
  32. does not dissolve
  33. sugar
  34. False
  35. safe from small children
  36. yeast
  37. small pebbles
  38. True
  39. baking soda
  40. water evaporates

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