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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 925 · 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) rusting iron (c) browning lemon ink (d) dissolving salt
  2. 2.True or false: baking soda dissolves in water. (a) True (b) False
  3. 3.⚖️ 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
  4. 4.🧺 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
  5. 5.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) turmeric powder (c) yeast (d) a spoon
  6. 6.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) it fizzes (c) few or no crystals (d) crystals grow faster
  7. 7.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a piece of string (c) turmeric powder (d) salt
  8. 8.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False
  9. 9.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
  10. 10.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a battery cell (c) a shallow dish (d) warm water
  11. 11.🧂 Which of these dissolves in water? (a) food colour (b) sawdust (c) chalk powder (d) small pebbles
  12. 12.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
  13. 13.🔍 Which is the odd one out? (a) sand (b) glucose powder (c) sawdust (d) small pebbles
  14. 14.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) salt crystals form (c) it turns to oil (d) sugar crystals form
  15. 15.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
  16. 16.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
  17. 17.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) on the edge of a table (c) safe from small children (d) in a busy doorway
  18. 18.🧈 Which of these is a change that cannot be undone? (a) cooking an egg (b) melting butter (c) folding paper (d) dissolving salt
  19. 19.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
  20. 20.🧺 Which of these is needed for growing salt crystals? (a) salt (b) a balloon (c) yeast (d) turmeric powder
  21. 21.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
  22. 22.⚖️ 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 amount of salt (b) sunny or shady place (c) days to see crystals (d) the same dish
  23. 23.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
  24. 24.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
  25. 25.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a balloon (c) warm water (d) a magnet
  26. 26.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we change it (b) we measure it (c) we keep it the same
  27. 27.True or false: a balloon is needed for growing salt crystals. (a) False (b) True
  28. 28.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a piece of string (c) salt (d) a mirror
  29. 29.🔍 Which is the odd one out? (a) baking soda (b) cooking oil (c) sand (d) small pebbles
  30. 30.⚖️ 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 keep it the same (b) we measure it (c) we change it
  31. 31.⚖️ 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
  32. 32.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) salt eats water (c) the dish melts (d) water evaporates
  33. 33.True or false: melting ice is a change that can be undone. (a) True (b) False
  34. 34.True or false: table salt does not dissolve in water. (a) True (b) False
  35. 35.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
  36. 36.🔍 Which is the odd one out? (a) sawdust (b) baking soda (c) food colour (d) sugar
  37. 37.True or false: chalk powder does not dissolve in water. (a) True (b) False
  38. 38.🧂 Which of these dissolves in water? (a) sand (b) chalk powder (c) cooking oil (d) sugar
  39. 39.True or false: browning lemon ink is a change that can be undone. (a) False (b) True
  40. 40.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) salt (c) warm water (d) a balloon

Answer key

  1. dissolving salt
  2. True
  3. True
  4. a balloon
  5. a spoon
  6. few or no crystals
  7. turmeric powder
  8. True
  9. can be undone
  10. a battery cell
  11. food colour
  12. False
  13. glucose powder
  14. sugar crystals form
  15. a grown-up
  16. can be undone
  17. safe from small children
  18. cooking an egg
  19. does not dissolve
  20. salt
  21. cannot be undone
  22. days to see crystals
  23. False
  24. not needed
  25. warm water
  26. we measure it
  27. False
  28. a mirror
  29. baking soda
  30. we change it
  31. True
  32. water evaporates
  33. True
  34. False
  35. cannot be undone
  36. sawdust
  37. True
  38. sugar
  39. False
  40. a balloon

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