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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 900 · 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 dissolves in water? (a) sand (b) cooking oil (c) small pebbles (d) table salt
  2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) a shallow dish (c) a piece of string (d) a spoon
  3. 3.True or false: a magnet is not needed for growing salt crystals. (a) False (b) True
  4. 4.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a shallow dish (c) yeast (d) a spoon
  5. 5.⚖️ 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 water (b) days to see crystals (c) sunny or shady place (d) the kind of salt
  6. 6.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) sugar crystals form (c) it turns to oil (d) salt crystals form
  7. 7.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
  8. 8.True or false: folding paper is a change that cannot be undone. (a) False (b) True
  9. 9.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
  10. 10.True or false: a piece of string is needed for growing salt crystals. (a) True (b) False
  11. 11.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
  12. 12.True or false: warm water is needed for growing salt crystals. (a) True (b) False
  13. 13.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
  14. 14.🔍 Which is the odd one out? (a) sawdust (b) chalk powder (c) sand (d) table salt
  15. 15.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
  16. 16.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
  17. 17.🧂 Why do we stir in salt until no more will dissolve? (a) to cool the water (b) to make it fizz (c) to change its colour (d) to make it very salty
  18. 18.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
  19. 19.True or false: sand dissolves in water. (a) False (b) True
  20. 20.True or false: salt is needed for growing salt crystals. (a) True (b) False
  21. 21.True or false: glucose powder does not dissolve in water. (a) True (b) False
  22. 22.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a balloon (d) warm water
  23. 23.🔍 Which is the odd one out? (a) glucose powder (b) table salt (c) food colour (d) chalk powder
  24. 24.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) salt rains down (c) sea water evaporates (d) fish make it
  25. 25.True or false: food colour does not dissolve in water. (a) True (b) False
  26. 26.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) next to the baby (c) on the edge of a table (d) in a busy doorway
  27. 27.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) salt (c) a balloon (d) a mirror
  28. 28.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) empty (c) magnetic (d) saturated
  29. 29.🧂 Which of these dissolves in water? (a) sugar (b) sawdust (c) sand (d) chalk powder
  30. 30.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) turmeric powder (c) salt (d) a shallow dish
  31. 31.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) warm water (c) turmeric powder (d) yeast
  32. 32.🧈 Which of these is a change that cannot be undone? (a) rusting iron (b) melting ice (c) dissolving salt (d) melting butter
  33. 33.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
  34. 34.⚖️ 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
  35. 35.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
  36. 36.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
  37. 37.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
  38. 38.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
  39. 39.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny triangles (c) tiny stars (d) tiny cubes
  40. 40.⚖️ 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 measure it (b) we keep it the same (c) we change it

Answer key

  1. table salt
  2. a battery cell
  3. True
  4. yeast
  5. days to see crystals
  6. sugar crystals form
  7. a grown-up
  8. False
  9. can be undone
  10. True
  11. not needed
  12. True
  13. dissolves in water
  14. table salt
  15. cannot be undone
  16. does not dissolve
  17. to make it very salty
  18. cannot be undone
  19. False
  20. True
  21. False
  22. a balloon
  23. chalk powder
  24. sea water evaporates
  25. False
  26. safe from small children
  27. salt
  28. saturated
  29. sugar
  30. turmeric powder
  31. warm water
  32. rusting iron
  33. dissolves in water
  34. True
  35. dissolves in water
  36. can be undone
  37. needed
  38. False
  39. tiny cubes
  40. we keep it the same

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