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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 818 · 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 needed for growing salt crystals? (a) a magnet (b) turmeric powder (c) a battery cell (d) a shallow dish
  2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) a piece of string (c) a shallow dish (d) salt
  3. 3.True or false: glucose powder does not dissolve in water. (a) False (b) True
  4. 4.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
  5. 5.True or false: yeast is not needed for growing salt crystals. (a) True (b) False
  6. 6.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
  7. 7.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a battery cell (c) turmeric powder (d) a spoon
  8. 8.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) baking a cake (c) dissolving salt (d) melting ice
  9. 9.True or false: baking soda dissolves in water. (a) True (b) False
  10. 10.True or false: sand 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? True or false: the kind of salt is kept the same. (a) False (b) True
  12. 12.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
  13. 13.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) next to the baby (c) safe from small children (d) on the edge of a table
  14. 14.True or false: dissolving salt is a change that can be undone. (a) True (b) False
  15. 15.🧂 Which of these does not dissolve in water? (a) cooking oil (b) table salt (c) sugar (d) baking soda
  16. 16.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
  17. 17.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
  18. 18.True or false: chalk powder dissolves in water. (a) True (b) False
  19. 19.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) saturated (c) magnetic (d) frozen
  20. 20.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) it turns to butter (c) salt crystals form (d) sugar crystals form
  21. 21.⚖️ 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) the amount of salt (c) sunny or shady place (d) the amount of water
  22. 22.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
  23. 23.⚖️ 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
  24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) a piece of string (d) a balloon
  25. 25.🔍 Which is the odd one out? (a) baking soda (b) sawdust (c) sand (d) cooking oil
  26. 26.🧂 Which of these dissolves in water? (a) cooking oil (b) small pebbles (c) sand (d) glucose powder
  27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is the one thing we change. (a) True (b) False
  28. 28.True or false: sugar dissolves in water. (a) True (b) False
  29. 29.True or false: table salt does not dissolve in water. (a) True (b) False
  30. 30.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
  31. 31.True or false: folding paper is a change that cannot be undone. (a) False (b) True
  32. 32.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) cooking an egg (c) rusting iron (d) melting butter
  33. 33.True or false: sawdust does not dissolve in water. (a) False (b) True
  34. 34.True or false: salt is not needed for growing salt crystals. (a) False (b) True
  35. 35.⚖️ 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 change it (b) we measure it (c) we keep it the same
  36. 36.🔍 Which is the odd one out? (a) sugar (b) small pebbles (c) glucose powder (d) table salt
  37. 37.🌊 How is salt made in salt pans by the sea? (a) sea water evaporates (b) salt rains down (c) sand is ground up (d) fish make it
  38. 38.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
  39. 39.🧂 Which of these dissolves in water? (a) chalk powder (b) cooking oil (c) sand (d) sugar
  40. 40.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a piece of string (d) yeast

Answer key

  1. a shallow dish
  2. turmeric powder
  3. False
  4. can be undone
  5. True
  6. needed
  7. a spoon
  8. baking a cake
  9. True
  10. False
  11. True
  12. not needed
  13. safe from small children
  14. True
  15. cooking oil
  16. cannot be undone
  17. a grown-up
  18. False
  19. saturated
  20. sugar crystals form
  21. days to see crystals
  22. not needed
  23. the same dish
  24. a balloon
  25. baking soda
  26. glucose powder
  27. False
  28. True
  29. False
  30. False
  31. False
  32. melting butter
  33. True
  34. False
  35. we keep it the same
  36. small pebbles
  37. sea water evaporates
  38. does not dissolve
  39. sugar
  40. yeast

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