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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 867 · 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 spoon (b) a magnet (c) a mirror (d) a balloon
  2. 2.⚖️ 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
  3. 3.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
  4. 4.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we measure it (b) we change it (c) we keep it the same
  5. 5.⚖️ 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) True (b) False
  6. 6.True or false: baking soda dissolves in water. (a) False (b) True
  7. 7.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
  8. 8.🔍 Which is the odd one out? (a) food colour (b) baking soda (c) sugar (d) sawdust
  9. 9.⚖️ 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 change it (b) we measure it (c) we keep it the same
  10. 10.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
  11. 11.🧂 Which of these dissolves in water? (a) sawdust (b) baking soda (c) cooking oil (d) small pebbles
  12. 12.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is what we measure. (a) False (b) True
  13. 13.True or false: glucose powder does not dissolve in water. (a) True (b) False
  14. 14.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) dissolving salt (c) freezing water (d) cooking an egg
  15. 15.True or false: sand dissolves in water. (a) False (b) True
  16. 16.True or false: cooking oil dissolves in water. (a) False (b) True
  17. 17.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
  18. 18.🧺 Which of these is not needed for growing salt crystals? (a) turmeric powder (b) warm water (c) salt (d) a piece of string
  19. 19.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it turns sweet (c) it fizzes (d) crystals grow faster
  20. 20.🧂 Which of these dissolves in water? (a) sugar (b) small pebbles (c) sand (d) chalk powder
  21. 21.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
  22. 22.🛟 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
  23. 23.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) warm water (c) a shallow dish (d) salt
  24. 24.True or false: cooking an egg is a change that cannot be undone. (a) False (b) True
  25. 25.🧂 Which of these does not dissolve in water? (a) sugar (b) table salt (c) sand (d) baking soda
  26. 26.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) liquid crystals (c) smaller crystals (d) no crystals
  27. 27.⚖️ 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) False (b) True
  28. 28.True or false: salt is not needed for growing salt crystals. (a) True (b) False
  29. 29.True or false: glucose powder dissolves in water. (a) False (b) True
  30. 30.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
  31. 31.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a piece of string (c) yeast (d) warm water
  32. 32.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
  33. 33.⚖️ 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 change it (b) we measure it (c) we keep it the same
  34. 34.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
  35. 35.🧂 Which of these does not dissolve in water? (a) glucose powder (b) sugar (c) table salt (d) sawdust
  36. 36.True or false: yeast is not needed for growing salt crystals. (a) True (b) False
  37. 37.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
  38. 38.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a shallow dish (c) a mirror (d) yeast
  39. 39.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a magnet (c) salt (d) a spoon
  40. 40.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) sunny or shady place (b) days to see crystals (c) the same dish

Answer key

  1. a spoon
  2. True
  3. False
  4. we change it
  5. True
  6. True
  7. can be undone
  8. sawdust
  9. we keep it the same
  10. dissolves in water
  11. baking soda
  12. False
  13. False
  14. cooking an egg
  15. False
  16. False
  17. True
  18. turmeric powder
  19. few or no crystals
  20. sugar
  21. can be undone
  22. safe from small children
  23. a battery cell
  24. True
  25. sand
  26. bigger crystals
  27. True
  28. False
  29. True
  30. can be undone
  31. yeast
  32. needed
  33. we keep it the same
  34. not needed
  35. sawdust
  36. True
  37. cannot be undone
  38. a shallow dish
  39. a magnet
  40. the same dish

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