Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 294 · 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 same dish”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.True or false: cooking oil dissolves in water. (a) True (b) False
3. 3.⚖️ 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 same dish (b) days to see crystals (c) the kind of salt (d) sunny or shady place
4. 4.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
5. 5.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
6. 6.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
7. 7.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
8. 8.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
9. 9.🔍 Which is the odd one out? (a) cooking oil (b) table salt (c) sugar (d) glucose powder
10. 10.⚖️ 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
11. 11.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) crystals grow faster (c) it turns sweet (d) few or no crystals
12. 12.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
13. 13.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) False (b) True
14. 14.🧂 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
15. 15.🔍 Which is the odd one out? (a) baking soda (b) small pebbles (c) glucose powder (d) sugar
16. 16.⚖️ 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 keep it the same (c) we change it
17. 17.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
18. 18.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
19. 19.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) a shallow dish (c) a piece of string (d) warm water
20. 20.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
21. 21.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) cooking an egg (c) dissolving salt (d) rusting iron
22. 22.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a balloon (c) salt (d) a mirror
23. 23.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to oil (c) it turns to butter (d) salt crystals form
24. 24.True or false: melting ice is a change that can be undone. (a) False (b) True
25. 25.⚖️ 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 change it (c) we measure it
26. 26.🧂 Which of these dissolves in water? (a) small pebbles (b) sand (c) chalk powder (d) sugar
27. 27.⚖️ 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) True (b) False
28. 28.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
29. 29.⚖️ 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
30. 30.⚖️ 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 measure it (c) we change it
31. 31.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a battery cell (c) warm water (d) a mirror
32. 32.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) food colour (b) chalk powder (c) table salt (d) glucose powder
34. 34.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) next to the baby (c) in a busy doorway (d) safe from small children
35. 35.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) cooking an egg (c) melting ice (d) baking a cake
36. 36.🧂 Which of these dissolves in water? (a) food colour (b) small pebbles (c) cooking oil (d) sawdust
37. 37.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny triangles (c) tiny stars (d) tiny spheres
38. 38.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a shallow dish (c) a mirror (d) turmeric powder
39. 39.True or false: glucose powder does not dissolve in water. (a) True (b) False
40. 40.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone

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