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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 502 · 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.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
  2. 2.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
  3. 3.🧂 Which of these dissolves in water? (a) cooking oil (b) sand (c) baking soda (d) small pebbles
  4. 4.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
  5. 5.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
  6. 6.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) sugar crystals form (c) it turns to oil (d) it turns to butter
  7. 7.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
  8. 8.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
  9. 9.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) in a busy doorway (c) safe from small children (d) on the edge of a table
  10. 10.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) a shallow dish (d) a magnet
  11. 11.True or false: yeast is needed for growing salt crystals. (a) True (b) False
  12. 12.🔍 Which is the odd one out? (a) glucose powder (b) small pebbles (c) baking soda (d) table salt
  13. 13.True or false: baking a cake is a change that cannot be undone. (a) True (b) False
  14. 14.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) magnetic (c) empty (d) saturated
  15. 15.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
  16. 16.🧂 Which of these does not dissolve in water? (a) table salt (b) sugar (c) baking soda (d) chalk powder
  17. 17.True or false: folding paper is a change that cannot be undone. (a) True (b) False
  18. 18.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
  19. 19.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) smaller crystals (c) bigger crystals (d) liquid crystals
  20. 20.True or false: glucose powder does not dissolve in water. (a) False (b) True
  21. 21.True or false: glucose powder dissolves in water. (a) True (b) False
  22. 22.True or false: cooking oil dissolves in water. (a) True (b) False
  23. 23.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) turmeric powder (c) a shallow dish (d) salt
  24. 24.True or false: salt is not needed for growing salt crystals. (a) True (b) False
  25. 25.🧂 Which of these does not dissolve in water? (a) baking soda (b) glucose powder (c) sawdust (d) table salt
  26. 26.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
  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 what we measure. (a) False (b) True
  28. 28.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a mirror (c) warm water (d) salt
  29. 29.⚖️ 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) days to see crystals (b) the same dish (c) sunny or shady place (d) the kind of salt
  30. 30.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) fish make it (c) sea water evaporates (d) sand is ground up
  31. 31.⚖️ 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
  32. 32.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) rusting iron (c) melting ice (d) cooking an egg
  33. 33.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) yeast (c) a battery cell (d) a shallow dish
  34. 34.True or false: melting ice is a change that cannot be undone. (a) True (b) False
  35. 35.True or false: cooking oil does not dissolve in water. (a) False (b) True
  36. 36.🧂 Why do we stir in salt until no more will dissolve? (a) to make it very salty (b) to cool the water (c) to make it fizz (d) to change its colour
  37. 37.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
  38. 38.True or false: a piece of string is needed for growing salt crystals. (a) True (b) False
  39. 39.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
  40. 40.True or false: table salt does not dissolve in water. (a) False (b) True

Answer key

  1. not needed
  2. needed
  3. baking soda
  4. does not dissolve
  5. needed
  6. sugar crystals form
  7. not needed
  8. dissolves in water
  9. safe from small children
  10. a magnet
  11. False
  12. small pebbles
  13. True
  14. saturated
  15. not needed
  16. chalk powder
  17. False
  18. cannot be undone
  19. bigger crystals
  20. False
  21. True
  22. False
  23. turmeric powder
  24. False
  25. sawdust
  26. dissolves in water
  27. True
  28. a mirror
  29. sunny or shady place
  30. sea water evaporates
  31. True
  32. melting ice
  33. a shallow dish
  34. False
  35. True
  36. to make it very salty
  37. a grown-up
  38. True
  39. needed
  40. False

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