← Growing salt crystals lesson New set →

Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 487 · 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.

NameDateTime takenScore ___ / 40
  1. 1.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
  2. 2.🧂 Which of these does not dissolve in water? (a) baking soda (b) small pebbles (c) table salt (d) food colour
  3. 3.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) no crystals (c) bigger crystals (d) liquid crystals
  4. 4.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) freezing water (c) milk turning to curd (d) melting butter
  5. 5.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
  6. 6.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
  7. 7.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
  8. 8.True or false: a battery cell is not needed for growing salt crystals. (a) True (b) False
  9. 9.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) yeast (c) warm water (d) a magnet
  10. 10.⚖️ 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 keep it the same (b) we change it (c) we measure it
  11. 11.True or false: folding paper is a change that can be undone. (a) True (b) False
  12. 12.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
  13. 13.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
  14. 14.True or false: a piece of string is needed for growing salt crystals. (a) False (b) True
  15. 15.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
  16. 16.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) yeast (c) a balloon (d) turmeric powder
  17. 17.True or false: chalk powder does not dissolve in water. (a) False (b) True
  18. 18.🧂 Which of these dissolves in water? (a) chalk powder (b) sand (c) small pebbles (d) sugar
  19. 19.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
  20. 20.🔍 Which is the odd one out? (a) cooking oil (b) glucose powder (c) sand (d) sawdust
  21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) a piece of string (d) a mirror
  22. 22.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) baking a cake (c) melting butter (d) freezing water
  23. 23.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
  24. 24.True or false: milk turning to curd is a change that cannot be undone. (a) False (b) True
  25. 25.⚖️ 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 change it (b) we measure it (c) we keep it the same
  26. 26.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
  27. 27.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) frozen (c) magnetic (d) saturated
  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) days to see crystals (b) the amount of salt (c) sunny or shady place (d) the kind of salt
  29. 29.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
  30. 30.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
  31. 31.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we measure it (b) we change it (c) we keep it the same
  32. 32.True or false: baking a cake is a change that cannot be undone. (a) True (b) False
  33. 33.True or false: freezing water is a change that cannot be undone. (a) True (b) False
  34. 34.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) few or no crystals (c) it fizzes (d) it turns sweet
  35. 35.True or false: rusting iron is a change that can be undone. (a) False (b) True
  36. 36.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we measure it (b) we change it (c) we keep it the same
  37. 37.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) a battery cell (d) a spoon
  38. 38.True or false: sugar does not dissolve in water. (a) True (b) False
  39. 39.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) it turns to oil (c) sugar crystals form (d) salt crystals form
  40. 40.True or false: small pebbles does not dissolve in water. (a) True (b) False

Answer key

  1. a grown-up
  2. small pebbles
  3. bigger crystals
  4. milk turning to curd
  5. True
  6. can be undone
  7. dissolves in water
  8. True
  9. warm water
  10. we measure it
  11. True
  12. can be undone
  13. needed
  14. True
  15. does not dissolve
  16. a piece of string
  17. True
  18. sugar
  19. does not dissolve
  20. glucose powder
  21. a mirror
  22. baking a cake
  23. False
  24. True
  25. we keep it the same
  26. cannot be undone
  27. saturated
  28. days to see crystals
  29. needed
  30. not needed
  31. we change it
  32. True
  33. False
  34. few or no crystals
  35. False
  36. we keep it the same
  37. a battery cell
  38. False
  39. sugar crystals form
  40. True

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids