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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 725 · 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) baking soda (c) small pebbles (d) chalk powder
  2. 2.🧈 Which of these is a change that can be undone? (a) melting ice (b) cooking an egg (c) browning lemon ink (d) rusting iron
  3. 3.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) milk turning to curd (c) browning lemon ink (d) freezing water
  4. 4.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) salt (c) a piece of string (d) a mirror
  5. 5.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
  6. 6.🧂 Which of these dissolves in water? (a) small pebbles (b) glucose powder (c) sand (d) sawdust
  7. 7.🧺 Which of these is needed for growing salt crystals? (a) a shallow dish (b) a magnet (c) a battery cell (d) a mirror
  8. 8.True or false: sand does not dissolve in water. (a) True (b) False
  9. 9.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
  10. 10.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) salt crystals form (c) it turns to oil (d) sugar crystals form
  11. 11.🧺 Which of these is not needed for growing salt crystals? (a) a mirror (b) a spoon (c) salt (d) warm water
  12. 12.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False
  13. 13.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
  14. 14.True or false: baking a cake is a change that cannot be undone. (a) True (b) False
  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) warm water (d) a balloon
  16. 16.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is what we measure. (a) True (b) False
  17. 17.True or false: chalk powder dissolves in water. (a) True (b) False
  18. 18.⚖️ 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
  19. 19.True or false: folding paper is a change that cannot be undone. (a) False (b) True
  20. 20.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
  21. 21.🔍 Which is the odd one out? (a) baking soda (b) sand (c) glucose powder (d) sugar
  22. 22.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is the one thing we change. (a) False (b) True
  23. 23.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting butter (c) cooking an egg (d) folding paper
  24. 24.🔍 Which is the odd one out? (a) small pebbles (b) baking soda (c) sugar (d) table salt
  25. 25.🧂 Which of these dissolves in water? (a) small pebbles (b) table salt (c) sand (d) cooking oil
  26. 26.True or false: small pebbles dissolves in water. (a) True (b) False
  27. 27.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
  28. 28.⚖️ 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) the amount of salt (c) days to see crystals (d) the kind of salt
  29. 29.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
  30. 30.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) warm water (c) turmeric powder (d) a balloon
  31. 31.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
  32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a magnet (c) salt (d) a shallow dish
  33. 33.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
  34. 34.⚖️ 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) sunny or shady place (c) the amount of water (d) the amount of salt
  35. 35.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) crystals grow faster (c) it fizzes (d) few or no crystals
  36. 36.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
  37. 37.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
  38. 38.🧂 Which of these does not dissolve in water? (a) sand (b) glucose powder (c) food colour (d) baking soda
  39. 39.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) on the edge of a table (c) next to the baby (d) in a busy doorway
  40. 40.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone

Answer key

  1. baking soda
  2. melting ice
  3. freezing water
  4. a mirror
  5. False
  6. glucose powder
  7. a shallow dish
  8. True
  9. dissolves in water
  10. sugar crystals form
  11. a mirror
  12. True
  13. needed
  14. True
  15. a balloon
  16. False
  17. False
  18. True
  19. False
  20. a grown-up
  21. sand
  22. False
  23. cooking an egg
  24. small pebbles
  25. table salt
  26. False
  27. dissolves in water
  28. days to see crystals
  29. not needed
  30. warm water
  31. False
  32. a magnet
  33. needed
  34. sunny or shady place
  35. few or no crystals
  36. dissolves in water
  37. False
  38. sand
  39. safe from small children
  40. can be undone

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