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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 675 · 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: a spoon is not needed for growing salt crystals. (a) True (b) False
  2. 2.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
  3. 3.⚖️ 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) sunny or shady place (c) days to see crystals (d) the amount of salt
  4. 4.🧂 Which of these does not dissolve in water? (a) cooking oil (b) sugar (c) glucose powder (d) baking soda
  5. 5.🔍 Which is the odd one out? (a) baking soda (b) food colour (c) sand (d) table salt
  6. 6.True or false: glucose powder does not dissolve in water. (a) True (b) False
  7. 7.True or false: melting butter is a change that can be undone. (a) False (b) True
  8. 8.True or false: table salt dissolves in water. (a) True (b) False
  9. 9.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
  10. 10.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
  11. 11.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
  12. 12.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) a spoon (c) a shallow dish (d) warm water
  13. 13.⚖️ 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) True (b) False
  14. 14.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
  15. 15.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a magnet (c) a shallow dish (d) a balloon
  16. 16.🧂 Which of these dissolves in water? (a) food colour (b) chalk powder (c) sand (d) small pebbles
  17. 17.⚖️ 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 kind of salt (b) the same dish (c) sunny or shady place (d) days to see crystals
  18. 18.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) True (b) False
  19. 19.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it fizzes (c) few or no crystals (d) it turns sweet
  20. 20.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
  21. 21.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
  22. 22.True or false: glucose powder dissolves in water. (a) True (b) False
  23. 23.⚖️ 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) True (b) False
  24. 24.True or false: freezing water is a change that cannot be undone. (a) False (b) True
  25. 25.True or false: small pebbles dissolves in water. (a) True (b) False
  26. 26.True or false: salt is needed for growing salt crystals. (a) True (b) False
  27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) salt (c) warm water (d) a piece of string
  28. 28.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
  29. 29.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny spheres (c) tiny triangles (d) tiny stars
  30. 30.🛟 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
  31. 31.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) in a busy doorway (c) safe from small children (d) next to the baby
  32. 32.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) salt (c) a balloon (d) warm water
  33. 33.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) the dish melts (c) water evaporates (d) salt eats water
  34. 34.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
  35. 35.🧂 Which of these dissolves in water? (a) sawdust (b) cooking oil (c) sugar (d) chalk powder
  36. 36.🔍 Which is the odd one out? (a) cooking oil (b) sawdust (c) small pebbles (d) baking soda
  37. 37.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) True (b) False
  38. 38.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) sea water evaporates (c) salt rains down (d) fish make it
  39. 39.⚖️ 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) True (b) False
  40. 40.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) True (b) False

Answer key

  1. False
  2. needed
  3. sunny or shady place
  4. cooking oil
  5. sand
  6. False
  7. True
  8. True
  9. True
  10. not needed
  11. does not dissolve
  12. a magnet
  13. True
  14. not needed
  15. a shallow dish
  16. food colour
  17. days to see crystals
  18. True
  19. few or no crystals
  20. False
  21. not needed
  22. True
  23. False
  24. False
  25. False
  26. True
  27. a balloon
  28. not needed
  29. tiny cubes
  30. a grown-up
  31. safe from small children
  32. a balloon
  33. water evaporates
  34. does not dissolve
  35. sugar
  36. baking soda
  37. True
  38. sea water evaporates
  39. False
  40. False

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