← Growing salt crystals lesson New set →

Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 58 · 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.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny spheres (c) tiny stars (d) tiny cubes
  2. 2.True or false: sawdust dissolves in water. (a) True (b) False
  3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a balloon (d) a spoon
  4. 4.🧈 Which of these is a change that can be undone? (a) freezing water (b) rusting iron (c) browning lemon ink (d) cooking an egg
  5. 5.🧂 Why do we stir in salt until no more will dissolve? (a) to change its colour (b) to cool the water (c) to make it very salty (d) to make it fizz
  6. 6.True or false: a mirror is needed for growing salt crystals. (a) False (b) True
  7. 7.🧺 Which of these is not needed for growing salt crystals? (a) a magnet (b) warm water (c) a piece of string (d) a spoon
  8. 8.True or false: small pebbles does not dissolve in water. (a) True (b) False
  9. 9.🔍 Which is the odd one out? (a) chalk powder (b) baking soda (c) small pebbles (d) sawdust
  10. 10.True or false: small pebbles dissolves in water. (a) False (b) True
  11. 11.True or false: food colour does not dissolve in water. (a) False (b) True
  12. 12.⚖️ 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 same dish (d) the amount of salt
  13. 13.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) dissolving salt (c) browning lemon ink (d) rusting iron
  14. 14.True or false: baking soda dissolves in water. (a) False (b) True
  15. 15.🔍 Which is the odd one out? (a) sand (b) cooking oil (c) food colour (d) sawdust
  16. 16.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
  17. 17.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to butter (c) sugar crystals form (d) it turns to oil
  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 salt”? (a) we keep it the same (b) we change it (c) we measure it
  19. 19.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) turmeric powder (d) a piece of string
  20. 20.🧈 Which of these is a change that can be undone? (a) melting ice (b) rusting iron (c) browning lemon ink (d) baking a cake
  21. 21.⚖️ 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) False (b) True
  22. 22.True or false: food colour dissolves in water. (a) True (b) False
  23. 23.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
  24. 24.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
  25. 25.🔍 Which is the odd one out? (a) food colour (b) sand (c) baking soda (d) table salt
  26. 26.⚖️ 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
  27. 27.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it fizzes (c) it turns sweet (d) crystals grow faster
  28. 28.🌊 How is salt made in salt pans by the sea? (a) sea water evaporates (b) sand is ground up (c) fish make it (d) salt rains down
  29. 29.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) saturated (c) magnetic (d) frozen
  30. 30.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
  31. 31.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
  32. 32.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) no crystals (c) liquid crystals (d) bigger crystals
  33. 33.🧺 Which of these is not needed for growing salt crystals? (a) a balloon (b) a spoon (c) salt (d) a piece of string
  34. 34.True or false: a spoon is needed for growing salt crystals. (a) True (b) False
  35. 35.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a spoon (c) a battery cell (d) a magnet
  36. 36.🧂 Which of these dissolves in water? (a) small pebbles (b) chalk powder (c) glucose powder (d) sand
  37. 37.True or false: sugar dissolves in water. (a) False (b) True
  38. 38.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) the dish melts (c) water evaporates (d) salt eats water
  39. 39.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
  40. 40.True or false: table salt dissolves in water. (a) False (b) True

Answer key

  1. tiny cubes
  2. False
  3. a balloon
  4. freezing water
  5. to make it very salty
  6. False
  7. a magnet
  8. True
  9. baking soda
  10. False
  11. False
  12. sunny or shady place
  13. dissolving salt
  14. True
  15. food colour
  16. dissolves in water
  17. sugar crystals form
  18. we keep it the same
  19. turmeric powder
  20. melting ice
  21. True
  22. True
  23. cannot be undone
  24. needed
  25. sand
  26. True
  27. few or no crystals
  28. sea water evaporates
  29. saturated
  30. a grown-up
  31. needed
  32. bigger crystals
  33. a balloon
  34. True
  35. a spoon
  36. glucose powder
  37. True
  38. water evaporates
  39. can be undone
  40. True

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