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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 876 · 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 is the odd one out? (a) food colour (b) table salt (c) sugar (d) small pebbles
  2. 2.🔍 Which is the odd one out? (a) baking soda (b) food colour (c) sawdust (d) sugar
  3. 3.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) few or no crystals (c) crystals grow faster (d) it turns sweet
  4. 4.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
  5. 5.🧈 Which of these is a change that can be undone? (a) folding paper (b) rusting iron (c) milk turning to curd (d) cooking an egg
  6. 6.🛟 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
  7. 7.🔍 Which is the odd one out? (a) sawdust (b) cooking oil (c) food colour (d) chalk powder
  8. 8.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny triangles (c) tiny stars (d) tiny cubes
  9. 9.True or false: sugar does not dissolve in water. (a) True (b) False
  10. 10.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
  11. 11.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) salt (c) a battery cell (d) a spoon
  12. 12.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is what we measure. (a) True (b) False
  13. 13.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) salt crystals form (c) sugar crystals form (d) it turns to oil
  14. 14.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) a balloon (d) a shallow dish
  15. 15.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a piece of string (c) a mirror (d) warm water
  16. 16.🧂 Which of these does not dissolve in water? (a) glucose powder (b) baking soda (c) table salt (d) chalk powder
  17. 17.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
  18. 18.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a balloon (c) a mirror (d) salt
  19. 19.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
  20. 20.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting butter (c) browning lemon ink (d) melting ice
  21. 21.🧈 Which of these is a change that can be undone? (a) rusting iron (b) melting butter (c) browning lemon ink (d) baking a cake
  22. 22.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) salt (c) turmeric powder (d) a shallow dish
  23. 23.🧂 Why do we stir in salt until no more will dissolve? (a) to make it very salty (b) to make it fizz (c) to change its colour (d) to cool the water
  24. 24.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) next to the baby (c) safe from small children (d) in a busy doorway
  25. 25.True or false: small pebbles does not dissolve in water. (a) True (b) False
  26. 26.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) liquid crystals (c) bigger crystals (d) smaller crystals
  27. 27.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
  28. 28.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
  29. 29.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) yeast (c) a spoon (d) a shallow dish
  30. 30.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) turmeric powder (c) a piece of string (d) a battery cell
  31. 31.⚖️ 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 keep it the same (b) we change it (c) we measure it
  32. 32.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
  33. 33.🔍 Which is the odd one out? (a) food colour (b) glucose powder (c) sugar (d) sand
  34. 34.🔍 Which is the odd one out? (a) sand (b) small pebbles (c) table salt (d) cooking oil
  35. 35.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
  36. 36.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
  37. 37.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
  38. 38.True or false: cooking oil dissolves in water. (a) False (b) True
  39. 39.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
  40. 40.True or false: milk turning to curd is a change that can be undone. (a) False (b) True

Answer key

  1. small pebbles
  2. sawdust
  3. few or no crystals
  4. False
  5. folding paper
  6. a grown-up
  7. food colour
  8. tiny cubes
  9. False
  10. needed
  11. a battery cell
  12. False
  13. sugar crystals form
  14. a balloon
  15. a mirror
  16. chalk powder
  17. cannot be undone
  18. salt
  19. dissolves in water
  20. browning lemon ink
  21. melting butter
  22. turmeric powder
  23. to make it very salty
  24. safe from small children
  25. True
  26. bigger crystals
  27. not needed
  28. False
  29. yeast
  30. a piece of string
  31. we measure it
  32. False
  33. sand
  34. table salt
  35. dissolves in water
  36. does not dissolve
  37. can be undone
  38. False
  39. needed
  40. False

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