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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 950 · 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) cooking an egg (b) rusting iron (c) melting ice (d) baking a cake
  2. 2.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) turmeric powder (c) a balloon (d) a piece of string
  3. 3.True or false: sand does not dissolve in water. (a) False (b) True
  4. 4.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
  5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a mirror (d) a piece of string
  6. 6.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
  7. 7.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a mirror (c) warm water (d) turmeric powder
  8. 8.True or false: sugar dissolves in water. (a) False (b) True
  9. 9.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
  10. 10.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a shallow dish (d) yeast
  11. 11.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) frozen (c) magnetic (d) empty
  12. 12.True or false: melting butter is a change that can be undone. (a) False (b) True
  13. 13.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a battery cell (c) a spoon (d) a piece of string
  14. 14.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
  15. 15.True or false: milk turning to curd is a change that cannot be undone. (a) True (b) False
  16. 16.True or false: small pebbles does not dissolve in water. (a) True (b) False
  17. 17.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) salt crystals form (c) it turns to butter (d) it turns to oil
  18. 18.🔍 Which is the odd one out? (a) sawdust (b) food colour (c) cooking oil (d) small pebbles
  19. 19.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
  20. 20.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny stars (c) tiny triangles (d) tiny cubes
  21. 21.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) crystals grow faster (c) it turns sweet (d) few or no crystals
  22. 22.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
  23. 23.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
  24. 24.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True
  25. 25.True or false: cooking oil dissolves in water. (a) False (b) True
  26. 26.⚖️ 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
  27. 27.🧂 Which of these dissolves in water? (a) small pebbles (b) cooking oil (c) glucose powder (d) sawdust
  28. 28.True or false: baking a cake is a change that cannot be undone. (a) False (b) True
  29. 29.🧺 Which of these is not needed for growing salt crystals? (a) a magnet (b) warm water (c) salt (d) a shallow dish
  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? Which of these is the one thing we change? (a) the amount of water (b) the kind of salt (c) sunny or shady place (d) days to see crystals
  32. 32.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) safe from small children (c) next to the baby (d) in a busy doorway
  33. 33.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) turmeric powder (d) salt
  34. 34.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) a spoon (d) a magnet
  35. 35.True or false: a magnet is needed for growing salt crystals. (a) False (b) True
  36. 36.True or false: dissolving salt is a change that can be undone. (a) False (b) True
  37. 37.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a mirror (c) salt (d) turmeric powder
  38. 38.True or false: folding paper is a change that cannot be undone. (a) True (b) False
  39. 39.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
  40. 40.🧂 Which of these dissolves in water? (a) cooking oil (b) sand (c) sugar (d) small pebbles

Answer key

  1. melting ice
  2. a piece of string
  3. True
  4. needed
  5. a mirror
  6. True
  7. warm water
  8. True
  9. dissolves in water
  10. yeast
  11. saturated
  12. True
  13. a battery cell
  14. not needed
  15. True
  16. True
  17. sugar crystals form
  18. food colour
  19. needed
  20. tiny cubes
  21. few or no crystals
  22. needed
  23. dissolves in water
  24. True
  25. False
  26. True
  27. glucose powder
  28. True
  29. a magnet
  30. sea water evaporates
  31. sunny or shady place
  32. safe from small children
  33. turmeric powder
  34. a magnet
  35. False
  36. True
  37. salt
  38. False
  39. not needed
  40. sugar

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