Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 305 · 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.True or false: baking a cake is a change that cannot be undone. (a) False (b) True
2. 2.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) freezing water (c) baking a cake (d) rusting iron
3. 3.⚖️ 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
4. 4.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
5. 5.🧈 Which of these is a change that can be undone? (a) folding paper (b) cooking an egg (c) milk turning to curd (d) rusting iron
6. 6.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny spheres (c) tiny cubes (d) tiny triangles
7. 7.⚖️ 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) the kind of salt (c) days to see crystals (d) sunny or shady place
8. 8.True or false: cooking oil does not dissolve in water. (a) True (b) False
9. 9.True or false: a balloon is not needed for growing salt crystals. (a) False (b) True
10. 10.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
11. 11.⚖️ 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 change it (c) we keep it the same
12. 12.⚖️ 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) True (b) False
13. 13.🧂 Which of these does not dissolve in water? (a) food colour (b) glucose powder (c) sand (d) sugar
14. 14.🔍 Which is the odd one out? (a) cooking oil (b) chalk powder (c) sand (d) sugar
15. 15.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) liquid crystals (c) smaller crystals (d) bigger crystals
16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) salt (c) a shallow dish (d) a piece of string
17. 17.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
18. 18.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) yeast (c) a battery cell (d) a magnet
19. 19.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the kind of salt (b) sunny or shady place (c) days to see crystals (d) the amount of salt
20. 20.⚖️ 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 change it (b) we keep it the same (c) we measure it
21. 21.🔮 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
22. 22.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
23. 23.⚖️ 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) True (b) False
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a battery cell (c) a piece of string (d) salt
25. 25.🔍 Which is the odd one out? (a) sand (b) food colour (c) glucose powder (d) baking soda
26. 26.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a piece of string (c) a spoon (d) yeast
27. 27.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a mirror (c) a battery cell (d) a spoon
28. 28.🧂 Which of these dissolves in water? (a) cooking oil (b) sand (c) table salt (d) small pebbles
29. 29.🔍 Which is the odd one out? (a) food colour (b) glucose powder (c) baking soda (d) small pebbles
30. 30.🧈 Which of these is a change that cannot be undone? (a) milk turning to curd (b) dissolving salt (c) folding paper (d) freezing water
31. 31.🧈 Which of these is a change that can be undone? (a) dissolving salt (b) milk turning to curd (c) baking a cake (d) browning lemon ink
32. 32.🔍 Which is the odd one out? (a) sawdust (b) table salt (c) food colour (d) baking soda
33. 33.⚖️ 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
34. 34.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
35. 35.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
36. 36.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) True (b) False
37. 37.⚖️ 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 keep it the same (b) we measure it (c) we change it
38. 38.⚖️ 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) True (b) False
39. 39.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a magnet (c) a battery cell (d) a piece of string
40. 40.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) milk turning to curd (c) melting ice (d) baking a cake

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