Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 403 · 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? What do we do with “the amount of salt”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) few or no crystals (c) it turns sweet (d) crystals grow faster
3. 3.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
4. 4.🔍 Which is the odd one out? (a) cooking oil (b) table salt (c) food colour (d) sugar
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 kind of salt (b) the amount of salt (c) the amount of water (d) days to see crystals
6. 6.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
7. 7.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
8. 8.🧈 Which of these is a change that can be undone? (a) rusting iron (b) dissolving salt (c) baking a cake (d) cooking an egg
9. 9.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
10. 10.🔮 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
11. 11.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a mirror (c) salt (d) a magnet
12. 12.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) fish make it (c) sea water evaporates (d) salt rains down
13. 13.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) salt eats water (c) the dish melts (d) water evaporates
14. 14.True or false: chalk powder dissolves in water. (a) False (b) True
15. 15.🧈 Which of these is a change that can be undone? (a) melting butter (b) baking a cake (c) milk turning to curd (d) browning lemon ink
16. 16.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
17. 17.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) folding paper (c) browning lemon ink (d) baking a cake
18. 18.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) turmeric powder (c) a balloon (d) a magnet
19. 19.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is the one thing we change. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) table salt (b) sand (c) glucose powder (d) food colour
21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) a battery cell (d) salt
22. 22.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) empty (c) magnetic (d) frozen
23. 23.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a balloon (c) salt (d) warm water
24. 24.🔍 Which is the odd one out? (a) sawdust (b) table salt (c) baking soda (d) sugar
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a piece of string (c) a spoon (d) a mirror
26. 26.⚖️ 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 keep it the same (b) we change it (c) we measure it
27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a piece of string (c) yeast (d) warm water
28. 28.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
29. 29.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
30. 30.True or false: a mirror is not needed for growing salt crystals. (a) True (b) False
31. 31.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
32. 32.True or false: sugar dissolves in water. (a) False (b) True
33. 33.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
34. 34.🧂 Which of these dissolves in water? (a) cooking oil (b) sand (c) food colour (d) sawdust
35. 35.🧂 Which of these does not dissolve in water? (a) glucose powder (b) food colour (c) small pebbles (d) sugar
36. 36.True or false: baking a cake is a change that cannot be undone. (a) True (b) False
37. 37.True or false: yeast is needed for growing salt crystals. (a) True (b) False
38. 38.🧂 Which of these dissolves in water? (a) glucose powder (b) cooking oil (c) sawdust (d) sand
39. 39.🧈 Which of these is a change that cannot be undone? (a) milk turning to curd (b) melting butter (c) freezing water (d) folding paper
40. 40.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a battery cell (c) salt (d) a spoon

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