Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 411 · 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? True or false: the same dish is kept the same. (a) True (b) False
2. 2.🛟 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
3. 3.🧺 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) a balloon
4. 4.⚖️ 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
5. 5.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) smaller crystals (c) liquid crystals (d) bigger crystals
6. 6.True or false: baking a cake is a change that cannot be undone. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) sawdust (b) cooking oil (c) food colour (d) sand
8. 8.🧂 Which of these does not dissolve in water? (a) cooking oil (b) sugar (c) table salt (d) baking soda
9. 9.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
10. 10.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
11. 11.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
12. 12.⚖️ 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) sunny or shady place (b) the amount of water (c) the amount of salt (d) the kind of salt
13. 13.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it fizzes (c) it turns sweet (d) crystals grow faster
14. 14.True or false: chalk powder does not dissolve in water. (a) True (b) False
15. 15.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
16. 16.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
17. 17.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
18. 18.True or false: baking soda dissolves in water. (a) True (b) False
19. 19.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) salt (c) a battery cell (d) yeast
20. 20.⚖️ 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
21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) a spoon (c) salt (d) warm water
22. 22.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
23. 23.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) warm water (d) a magnet
24. 24.True or false: folding paper is a change that cannot be undone. (a) True (b) False
25. 25.⚖️ 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 salt (c) days to see crystals (d) sunny or shady place
26. 26.🔍 Which is the odd one out? (a) cooking oil (b) sawdust (c) table salt (d) sand
27. 27.True or false: baking soda does not dissolve in water. (a) True (b) False
28. 28.True or false: yeast is not needed for growing salt crystals. (a) True (b) False
29. 29.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the amount of water (b) days to see crystals (c) sunny or shady place
30. 30.True or false: rusting iron is a change that can be undone. (a) False (b) True
31. 31.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
32. 32.🧂 Which of these dissolves in water? (a) chalk powder (b) sawdust (c) table salt (d) small pebbles
33. 33.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
34. 34.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
35. 35.True or false: small pebbles does not dissolve in water. (a) False (b) True
36. 36.🧂 Which of these dissolves in water? (a) small pebbles (b) chalk powder (c) sawdust (d) baking soda
37. 37.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
38. 38.🔍 Which is the odd one out? (a) table salt (b) baking soda (c) glucose powder (d) chalk powder
39. 39.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a mirror (c) a shallow dish (d) a spoon
40. 40.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) salt crystals form (c) sugar crystals form (d) it turns to butter

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