← Growing salt crystals lesson New set →

Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 915 · 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.🔍 Which is the odd one out? (a) sugar (b) food colour (c) glucose powder (d) chalk powder
  2. 2.🧈 Which of these is a change that can be undone? (a) rusting iron (b) milk turning to curd (c) melting ice (d) cooking an egg
  3. 3.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
  4. 4.🔍 Which is the odd one out? (a) cooking oil (b) small pebbles (c) food colour (d) sand
  5. 5.🔮 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
  6. 6.True or false: table salt does not dissolve in water. (a) True (b) False
  7. 7.True or false: glucose powder does not dissolve in water. (a) True (b) False
  8. 8.True or false: warm water is needed for growing salt crystals. (a) True (b) False
  9. 9.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a shallow dish (c) a battery cell (d) salt
  10. 10.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
  11. 11.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False
  12. 12.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
  13. 13.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a balloon (c) a shallow dish (d) salt
  14. 14.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
  15. 15.🧂 Which of these does not dissolve in water? (a) small pebbles (b) baking soda (c) sugar (d) glucose powder
  16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) a mirror (d) warm water
  17. 17.True or false: dissolving salt is a change that cannot be undone. (a) False (b) True
  18. 18.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
  19. 19.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) empty (c) magnetic (d) saturated
  20. 20.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to butter (c) it turns to oil (d) salt crystals form
  21. 21.🧂 Which of these dissolves in water? (a) small pebbles (b) glucose powder (c) chalk powder (d) cooking oil
  22. 22.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) liquid crystals (c) no crystals (d) smaller crystals
  23. 23.⚖️ 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
  24. 24.True or false: freezing water is a change that can be undone. (a) True (b) False
  25. 25.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) salt (c) yeast (d) a balloon
  26. 26.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
  27. 27.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
  28. 28.🧂 Which of these dissolves in water? (a) small pebbles (b) chalk powder (c) baking soda (d) sand
  29. 29.True or false: cooking oil dissolves in water. (a) False (b) True
  30. 30.True or false: salt is needed for growing salt crystals. (a) False (b) True
  31. 31.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) water evaporates (c) salt eats water (d) salt grows roots
  32. 32.⚖️ 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 keep it the same (c) we measure it
  33. 33.⚖️ 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 keep it the same (c) we change it
  34. 34.⚖️ 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) True (b) False
  35. 35.True or false: turmeric powder is not needed for growing salt crystals. (a) True (b) False
  36. 36.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) on the edge of a table (c) in a busy doorway (d) safe from small children
  37. 37.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
  38. 38.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
  39. 39.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
  40. 40.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water

Answer key

  1. chalk powder
  2. melting ice
  3. can be undone
  4. food colour
  5. few or no crystals
  6. False
  7. False
  8. True
  9. a battery cell
  10. can be undone
  11. True
  12. does not dissolve
  13. a balloon
  14. needed
  15. small pebbles
  16. a mirror
  17. False
  18. we keep it the same
  19. saturated
  20. sugar crystals form
  21. glucose powder
  22. bigger crystals
  23. True
  24. True
  25. salt
  26. does not dissolve
  27. True
  28. baking soda
  29. False
  30. True
  31. water evaporates
  32. we keep it the same
  33. we keep it the same
  34. True
  35. True
  36. safe from small children
  37. does not dissolve
  38. not needed
  39. False
  40. does not dissolve

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