Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 341 · 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.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
2. 2.🧂 Which of these dissolves in water? (a) sand (b) chalk powder (c) food colour (d) cooking oil
3. 3.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) warm water (c) a battery cell (d) salt
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 cannot be undone? (a) folding paper (b) dissolving salt (c) cooking an egg (d) freezing water
6. 6.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
7. 7.🧂 Which of these does not dissolve in water? (a) glucose powder (b) table salt (c) cooking oil (d) sugar
8. 8.⚖️ 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) sunny or shady place (c) the amount of salt (d) the kind of salt
9. 9.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) True (b) False
10. 10.True or false: glucose powder dissolves in water. (a) False (b) True
11. 11.True or false: salt is needed for growing salt crystals. (a) True (b) False
12. 12.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) turmeric powder (c) yeast (d) a battery cell
13. 13.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) rusting iron (c) freezing water (d) browning lemon ink
14. 14.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
15. 15.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
16. 16.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is the one thing we change. (a) False (b) True
17. 17.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) milk turning to curd (c) melting ice (d) browning lemon ink
18. 18.🔍 Which is the odd one out? (a) table salt (b) cooking oil (c) sugar (d) baking soda
19. 19.⚖️ 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
20. 20.True or false: baking a cake is a change that cannot be undone. (a) True (b) False
21. 21.⚖️ 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
22. 22.True or false: rusting iron is a change that can be undone. (a) True (b) False
23. 23.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
24. 24.⚖️ 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 keep it the same (b) we measure it (c) we change it
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) True (b) False
26. 26.True or false: sand dissolves in water. (a) True (b) False
27. 27.⚖️ 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 same dish (b) the amount of water (c) sunny or shady place (d) days to see crystals
28. 28.⚖️ 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 measure it (b) we change it (c) we keep it the same
29. 29.True or false: baking soda dissolves in water. (a) False (b) True
30. 30.🧺 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) a battery cell
31. 31.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
32. 32.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) salt crystals form (c) it turns to oil (d) sugar crystals form
33. 33.⚖️ 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) False (b) True
34. 34.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False
35. 35.True or false: glucose powder does not dissolve in water. (a) True (b) False
36. 36.True or false: turmeric powder is not needed for growing salt crystals. (a) False (b) True
37. 37.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a shallow dish (d) turmeric powder
39. 39.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
40. 40.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False

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