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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 573 · 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.True or false: sugar dissolves in water. (a) False (b) True
  2. 2.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
  3. 3.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
  4. 4.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is the one thing we change. (a) False (b) True
  5. 5.🔍 Which is the odd one out? (a) sand (b) sawdust (c) small pebbles (d) table salt
  6. 6.🧂 Which of these dissolves in water? (a) small pebbles (b) sugar (c) chalk powder (d) sand
  7. 7.🧂 Which of these dissolves in water? (a) food colour (b) small pebbles (c) sand (d) cooking oil
  8. 8.🧂 Why do we stir in salt until no more will dissolve? (a) to cool the water (b) to change its colour (c) to make it fizz (d) to make it very salty
  9. 9.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
  10. 10.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
  11. 11.⚖️ 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 kind of salt (b) the amount of salt (c) the same dish (d) sunny or shady place
  12. 12.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
  13. 13.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) yeast (c) a mirror (d) a spoon
  14. 14.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
  15. 15.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to oil (c) it turns to butter (d) sugar crystals form
  16. 16.🔍 Which is the odd one out? (a) table salt (b) glucose powder (c) sand (d) food colour
  17. 17.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
  18. 18.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
  19. 19.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) True (b) False
  20. 20.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False
  21. 21.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
  22. 22.🔍 Which is the odd one out? (a) chalk powder (b) sugar (c) cooking oil (d) sawdust
  23. 23.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) salt (d) turmeric powder
  24. 24.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
  25. 25.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
  26. 26.🧂 Which of these does not dissolve in water? (a) cooking oil (b) baking soda (c) table salt (d) sugar
  27. 27.🧂 Which of these dissolves in water? (a) sand (b) table salt (c) cooking oil (d) small pebbles
  28. 28.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) False (b) True
  29. 29.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
  30. 30.True or false: glucose powder dissolves in water. (a) True (b) False
  31. 31.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny spheres (c) tiny cubes (d) tiny triangles
  32. 32.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) days to see crystals (b) the kind of salt (c) sunny or shady place (d) the same dish
  33. 33.🛟 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
  34. 34.True or false: baking soda dissolves in water. (a) True (b) False
  35. 35.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
  36. 36.🧂 Which of these dissolves in water? (a) cooking oil (b) glucose powder (c) chalk powder (d) small pebbles
  37. 37.True or false: melting butter is a change that cannot be undone. (a) True (b) False
  38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a balloon (c) a shallow dish (d) warm water
  39. 39.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting ice (c) rusting iron (d) freezing water
  40. 40.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) empty (c) saturated (d) magnetic

Answer key

  1. True
  2. dissolves in water
  3. a grown-up
  4. False
  5. table salt
  6. sugar
  7. food colour
  8. to make it very salty
  9. dissolves in water
  10. cannot be undone
  11. sunny or shady place
  12. cannot be undone
  13. a spoon
  14. does not dissolve
  15. sugar crystals form
  16. sand
  17. needed
  18. not needed
  19. True
  20. False
  21. not needed
  22. sugar
  23. turmeric powder
  24. does not dissolve
  25. not needed
  26. cooking oil
  27. table salt
  28. True
  29. needed
  30. True
  31. tiny cubes
  32. days to see crystals
  33. safe from small children
  34. True
  35. dissolves in water
  36. glucose powder
  37. False
  38. a balloon
  39. rusting iron
  40. saturated

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