Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 706 · 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.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
2. 2.True or false: cooking an egg is a change that can be undone. (a) True (b) False
3. 3.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) magnetic (c) empty (d) saturated
4. 4.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) browning lemon ink (c) dissolving salt (d) folding paper
5. 5.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) on the edge of a table (c) in a busy doorway (d) next to the baby
6. 6.🧂 Which of these dissolves in water? (a) baking soda (b) sand (c) cooking oil (d) chalk powder
7. 7.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) sunny or shady place (b) the amount of salt (c) days to see crystals (d) the same dish
8. 8.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
9. 9.True or false: food colour dissolves in water. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) glucose powder (b) sand (c) sawdust (d) cooking oil
11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is what we measure. (a) True (b) False
12. 12.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
13. 13.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
14. 14.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny cubes (c) tiny triangles (d) tiny stars
15. 15.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a piece of string (d) turmeric powder
16. 16.🔍 Which is the odd one out? (a) baking soda (b) cooking oil (c) food colour (d) sugar
17. 17.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) milk turning to curd (c) freezing water (d) melting butter
18. 18.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) melting butter (c) milk turning to curd (d) rusting iron
19. 19.⚖️ 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) the amount of salt (c) days to see crystals
20. 20.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a shallow dish (c) warm water (d) a mirror
21. 21.⚖️ 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
22. 22.⚖️ 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
23. 23.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
24. 24.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
25. 25.⚖️ 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
26. 26.🔍 Which is the odd one out? (a) small pebbles (b) table salt (c) chalk powder (d) sawdust
27. 27.⚖️ 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) days to see crystals (b) the kind of salt (c) the amount of water (d) sunny or shady place
28. 28.🔍 Which is the odd one out? (a) table salt (b) food colour (c) sugar (d) sand
29. 29.True or false: folding paper is a change that cannot be undone. (a) False (b) True
30. 30.🧂 Which of these dissolves in water? (a) sand (b) glucose powder (c) sawdust (d) cooking oil
31. 31.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
32. 32.True or false: dissolving salt is a change that can be undone. (a) False (b) True
33. 33.🧂 Which of these does not dissolve in water? (a) chalk powder (b) sugar (c) baking soda (d) table salt
34. 34.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) water evaporates (c) salt eats water (d) salt grows roots
35. 35.🔍 Which is the odd one out? (a) table salt (b) baking soda (c) chalk powder (d) food colour
36. 36.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to oil (c) sugar crystals form (d) it turns to butter
37. 37.🧂 Which of these does not dissolve in water? (a) food colour (b) table salt (c) cooking oil (d) sugar
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a shallow dish (c) warm water (d) a battery cell
39. 39.True or false: sawdust dissolves in water. (a) False (b) True
40. 40.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is the one thing we change. (a) False (b) True

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