Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 167 · 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.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
2. 2.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
3. 3.🔍 Which is the odd one out? (a) baking soda (b) glucose powder (c) small pebbles (d) sugar
4. 4.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to butter (c) sugar crystals form (d) it turns to oil
5. 5.⚖️ 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 amount of salt (b) days to see crystals (c) sunny or shady place (d) the amount of water
6. 6.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
7. 7.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) yeast (c) turmeric powder (d) a piece of string
8. 8.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) the dish melts (c) water evaporates (d) salt grows roots
9. 9.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a piece of string (d) yeast
10. 10.⚖️ 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) False (b) True
11. 11.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a spoon (c) yeast (d) a balloon
12. 12.True or false: folding paper is a change that can be undone. (a) True (b) False
13. 13.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) crystals grow faster (c) it turns sweet (d) it fizzes
14. 14.True or false: cooking oil does not dissolve in water. (a) False (b) True
15. 15.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
16. 16.True or false: warm water is not needed for growing salt crystals. (a) False (b) True
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) a magnet (d) salt
18. 18.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
19. 19.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) warm water (c) a battery cell (d) a spoon
20. 20.🧂 Which of these dissolves in water? (a) small pebbles (b) baking soda (c) chalk powder (d) cooking oil
21. 21.🧂 Which of these dissolves in water? (a) chalk powder (b) food colour (c) sawdust (d) small pebbles
22. 22.🧈 Which of these is a change that can be undone? (a) baking a cake (b) dissolving salt (c) milk turning to curd (d) rusting iron
23. 23.⚖️ 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
24. 24.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
25. 25.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) folding paper (c) melting butter (d) browning lemon ink
26. 26.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) warm water (d) a balloon
27. 27.True or false: food colour does not dissolve in water. (a) False (b) True
28. 28.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
29. 29.🔍 Which is the odd one out? (a) sawdust (b) chalk powder (c) cooking oil (d) glucose powder
30. 30.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
31. 31.🔍 Which is the odd one out? (a) chalk powder (b) small pebbles (c) sugar (d) cooking oil
32. 32.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is what we measure. (a) True (b) False
33. 33.🧈 Which of these is a change that can be undone? (a) baking a cake (b) melting butter (c) cooking an egg (d) rusting iron
34. 34.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) turmeric powder (c) a shallow dish (d) a spoon
35. 35.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
36. 36.True or false: a spoon is needed for growing salt crystals. (a) True (b) False
37. 37.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) smaller crystals (c) bigger crystals (d) liquid crystals
38. 38.True or false: baking a cake is a change that can be undone. (a) True (b) False
39. 39.True or false: browning lemon ink is a change that can be undone. (a) False (b) True
40. 40.🧺 Which of these is not needed for growing salt crystals? (a) turmeric powder (b) a piece of string (c) a spoon (d) warm water

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