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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 180 · 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.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a mirror (c) warm water (d) a piece of string
  2. 2.🧂 Which of these dissolves in water? (a) food colour (b) sand (c) sawdust (d) small pebbles
  3. 3.🔍 Which is the odd one out? (a) cooking oil (b) glucose powder (c) small pebbles (d) sand
  4. 4.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) True (b) False
  5. 5.🔍 Which is the odd one out? (a) sand (b) baking soda (c) table salt (d) sugar
  6. 6.🧂 Which of these does not dissolve in water? (a) table salt (b) sawdust (c) baking soda (d) glucose powder
  7. 7.⚖️ 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 measure it (b) we keep it the same (c) we change it
  8. 8.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) water evaporates (c) salt grows roots (d) the dish melts
  9. 9.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a piece of string (c) a shallow dish (d) a mirror
  10. 10.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) yeast (c) a mirror (d) turmeric powder
  11. 11.True or false: melting butter is a change that cannot be undone. (a) True (b) False
  12. 12.🧂 Which of these dissolves in water? (a) chalk powder (b) sugar (c) sand (d) sawdust
  13. 13.True or false: baking soda dissolves in water. (a) True (b) False
  14. 14.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a spoon (c) a battery cell (d) a shallow dish
  15. 15.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) cooking an egg (c) melting ice (d) browning lemon ink
  16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) a piece of string (c) warm water (d) a shallow dish
  17. 17.True or false: sawdust dissolves in water. (a) True (b) False
  18. 18.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
  19. 19.🔍 Which is the odd one out? (a) cooking oil (b) sawdust (c) chalk powder (d) food colour
  20. 20.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
  21. 21.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
  22. 22.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) magnetic (c) empty (d) saturated
  23. 23.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) it turns to oil (c) salt crystals form (d) sugar crystals form
  24. 24.True or false: folding paper is a change that cannot be undone. (a) True (b) False
  25. 25.⚖️ 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
  26. 26.True or false: table salt dissolves in water. (a) True (b) False
  27. 27.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
  28. 28.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
  29. 29.True or false: baking a cake is a change that can be undone. (a) False (b) True
  30. 30.🧂 Which of these does not dissolve in water? (a) sugar (b) food colour (c) table salt (d) cooking oil
  31. 31.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) a magnet (d) warm water
  32. 32.⚖️ 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
  33. 33.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) sea water evaporates (c) sand is ground up (d) fish make it
  34. 34.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) crystals grow faster (c) it turns sweet (d) it fizzes
  35. 35.🔍 Which is the odd one out? (a) cooking oil (b) sugar (c) sawdust (d) sand
  36. 36.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) turmeric powder (d) a spoon
  37. 37.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) table salt (d) chalk powder
  38. 38.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is the one thing we change. (a) False (b) True
  39. 39.True or false: browning lemon ink is a change that can be undone. (a) False (b) True
  40. 40.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone

Answer key

  1. a mirror
  2. food colour
  3. glucose powder
  4. False
  5. sand
  6. sawdust
  7. we measure it
  8. water evaporates
  9. a mirror
  10. a piece of string
  11. False
  12. sugar
  13. True
  14. a battery cell
  15. melting ice
  16. a battery cell
  17. False
  18. False
  19. food colour
  20. dissolves in water
  21. can be undone
  22. saturated
  23. sugar crystals form
  24. False
  25. True
  26. True
  27. cannot be undone
  28. can be undone
  29. False
  30. cooking oil
  31. a magnet
  32. True
  33. sea water evaporates
  34. few or no crystals
  35. sugar
  36. turmeric powder
  37. table salt
  38. False
  39. False
  40. can be undone

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