Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 268 · 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? Which of these is what we measure? (a) sunny or shady place (b) the same dish (c) the kind of salt (d) days to see crystals
2. 2.🧂 Which of these dissolves in water? (a) chalk powder (b) sawdust (c) food colour (d) sand
3. 3.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
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) the same dish (c) sunny or shady place (d) the amount of salt
5. 5.🧂 Which of these dissolves in water? (a) chalk powder (b) sawdust (c) glucose powder (d) cooking oil
6. 6.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
7. 7.True or false: a battery cell is not needed for growing salt crystals. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) table salt (b) sawdust (c) food colour (d) baking soda
9. 9.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
10. 10.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) few or no crystals (c) crystals grow faster (d) it fizzes
11. 11.🛟 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
12. 12.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
13. 13.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny cubes (c) tiny triangles (d) tiny stars
14. 14.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
15. 15.True or false: chalk powder does not dissolve in water. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) cooking oil (b) sand (c) table salt (d) sawdust
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) yeast (d) salt
18. 18.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is what we measure. (a) False (b) True
19. 19.True or false: rusting iron is a change that can be undone. (a) False (b) True
20. 20.True or false: yeast is not needed for growing salt crystals. (a) True (b) False
21. 21.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
22. 22.🧺 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 magnet
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) False (b) True
24. 24.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) milk turning to curd (c) browning lemon ink (d) freezing water
25. 25.⚖️ 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
26. 26.True or false: sand dissolves in water. (a) False (b) True
27. 27.⚖️ 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
28. 28.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
29. 29.🔍 Which is the odd one out? (a) sugar (b) glucose powder (c) sand (d) table salt
30. 30.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a shallow dish (c) yeast (d) a battery cell
31. 31.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) salt (c) warm water (d) a shallow dish
32. 32.🔍 Which is the odd one out? (a) small pebbles (b) table salt (c) sugar (d) food colour
33. 33.⚖️ 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
34. 34.True or false: small pebbles dissolves in water. (a) True (b) False
35. 35.⚖️ 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 measure it (c) we keep it the same
36. 36.True or false: browning lemon ink is a change that cannot be undone. (a) False (b) True
37. 37.🧂 Which of these does not dissolve in water? (a) glucose powder (b) baking soda (c) table salt (d) sawdust
38. 38.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
39. 39.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
40. 40.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) False (b) True

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