Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 450 · 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 measure it (b) we keep it the same (c) we change it
2. 2.🧂 Which of these dissolves in water? (a) sawdust (b) baking soda (c) sand (d) cooking oil
3. 3.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) milk turning to curd (c) dissolving salt (d) rusting iron
4. 4.⚖️ 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) days to see crystals
5. 5.🧂 Which of these dissolves in water? (a) chalk powder (b) sawdust (c) table salt (d) sand
6. 6.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) browning lemon ink (c) freezing water (d) dissolving salt
7. 7.True or false: chalk powder does not dissolve in water. (a) False (b) True
8. 8.True or false: dissolving salt is a change that can be undone. (a) True (b) False
9. 9.⚖️ 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 change it (b) we keep it the same (c) we measure it
10. 10.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
11. 11.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) salt crystals form (c) it turns to butter (d) sugar crystals form
12. 12.🔍 Which is the odd one out? (a) sawdust (b) sugar (c) glucose powder (d) baking soda
13. 13.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
14. 14.⚖️ 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 keep it the same (b) we change it (c) we measure it
15. 15.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) a mirror (d) salt
17. 17.🛟 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
18. 18.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
19. 19.True or false: yeast is needed for growing salt crystals. (a) True (b) False
20. 20.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is what we measure. (a) False (b) True
21. 21.🧂 Which of these dissolves in water? (a) sand (b) cooking oil (c) sawdust (d) food colour
22. 22.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
23. 23.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
24. 24.⚖️ 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
25. 25.True or false: melting ice is a change that can be undone. (a) True (b) False
26. 26.🧂 Which of these dissolves in water? (a) sugar (b) chalk powder (c) sand (d) small pebbles
27. 27.🧂 Which of these does not dissolve in water? (a) sugar (b) sand (c) food colour (d) baking soda
28. 28.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a battery cell (c) a magnet (d) a shallow dish
29. 29.🔍 Which is the odd one out? (a) small pebbles (b) table salt (c) baking soda (d) food colour
30. 30.🌊 How is salt made in salt pans by the sea? (a) sea water evaporates (b) sand is ground up (c) salt rains down (d) fish make it
31. 31.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
32. 32.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) magnetic (c) saturated (d) empty
33. 33.⚖️ 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 measure it (b) we change it (c) we keep it the same
34. 34.🔍 Which is the odd one out? (a) sand (b) cooking oil (c) small pebbles (d) sugar
35. 35.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
36. 36.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
37. 37.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
38. 38.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a piece of string (c) a magnet (d) a shallow dish
39. 39.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
40. 40.True or false: rusting iron is a change that cannot be undone. (a) False (b) True

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