Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 9 · 40 questions

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.

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

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