Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 586 · 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.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
2. 2.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting ice (c) baking a cake (d) melting butter
3. 3.True or false: cooking oil dissolves in water. (a) True (b) False
4. 4.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it fizzes (c) few or no crystals (d) it turns sweet
5. 5.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) warm water (c) a balloon (d) a piece of string
6. 6.🧂 Which of these dissolves in water? (a) table salt (b) sawdust (c) sand (d) small pebbles
7. 7.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) yeast (c) a mirror (d) turmeric powder
8. 8.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
9. 9.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) liquid crystals (c) smaller crystals (d) bigger crystals
10. 10.⚖️ 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) days to see crystals (c) the amount of salt (d) sunny or shady place
11. 11.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
12. 12.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a magnet (c) a spoon (d) a shallow dish
13. 13.True or false: baking a cake is a change that can be undone. (a) False (b) True
14. 14.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
15. 15.⚖️ 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
16. 16.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
17. 17.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
18. 18.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) sugar crystals form (c) it turns to butter (d) salt crystals form
19. 19.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) water evaporates (c) salt eats water (d) salt grows roots
20. 20.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
21. 21.True or false: glucose powder does not dissolve in water. (a) True (b) False
22. 22.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) dissolving salt (c) baking a cake (d) browning lemon ink
23. 23.True or false: freezing water is a change that can be undone. (a) True (b) False
24. 24.🧂 Which of these dissolves in water? (a) sugar (b) small pebbles (c) cooking oil (d) sawdust
25. 25.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
26. 26.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) days to see crystals (b) the kind of salt (c) sunny or shady place
27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) True (b) False
28. 28.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
29. 29.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
30. 30.⚖️ 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
31. 31.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) folding paper (c) freezing water (d) cooking an egg
32. 32.🧂 Which of these does not dissolve in water? (a) table salt (b) food colour (c) sugar (d) sawdust
33. 33.⚖️ 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
34. 34.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) a piece of string (d) yeast
35. 35.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
36. 36.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
37. 37.🧺 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 battery cell (d) salt
38. 38.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a piece of string (c) a magnet (d) a spoon
39. 39.🧺 Which of these is needed for growing salt crystals? (a) a shallow dish (b) a magnet (c) a balloon (d) a battery cell
40. 40.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed

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