Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 986 · 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) not needed (b) needed
2. 2.⚖️ 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 keep it the same (b) we change it (c) we measure it
3. 3.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) water evaporates (c) salt grows roots (d) salt eats water
4. 4.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny spheres (c) tiny cubes (d) tiny triangles
5. 5.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
6. 6.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it turns sweet (c) few or no crystals (d) it fizzes
7. 7.🧺 Which of these is not needed for growing salt crystals? (a) yeast (b) a spoon (c) warm water (d) a shallow dish
8. 8.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a mirror (c) warm water (d) turmeric powder
9. 9.True or false: melting ice is a change that cannot be undone. (a) True (b) False
10. 10.True or false: milk turning to curd is a change that cannot be undone. (a) True (b) False
11. 11.🧂 Which of these does not dissolve in water? (a) baking soda (b) sand (c) sugar (d) food colour
12. 12.True or false: melting butter is a change that can be undone. (a) False (b) True
13. 13.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
14. 14.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) turmeric powder (c) a spoon (d) a shallow dish
15. 15.True or false: yeast is needed for growing salt crystals. (a) False (b) True
16. 16.True or false: chalk powder dissolves in water. (a) False (b) True
17. 17.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) sea water evaporates (c) fish make it (d) salt rains down
18. 18.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
19. 19.⚖️ 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) the amount of water (c) days to see crystals (d) sunny or shady place
20. 20.True or false: salt is needed for growing salt crystals. (a) False (b) True
21. 21.⚖️ 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) False (b) True
22. 22.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a balloon (d) warm water
23. 23.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
24. 24.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
25. 25.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
26. 26.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
27. 27.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) bigger crystals (c) smaller crystals (d) no crystals
28. 28.🧂 Which of these dissolves in water? (a) cooking oil (b) sand (c) glucose powder (d) small pebbles
29. 29.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
30. 30.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
31. 31.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
32. 32.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we measure it (b) we keep it the same (c) we change it
33. 33.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
34. 34.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
35. 35.⚖️ 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 salt (c) the kind of salt (d) the same dish
36. 36.🧈 Which of these is a change that can be undone? (a) baking a cake (b) rusting iron (c) cooking an egg (d) melting butter
37. 37.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
38. 38.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) folding paper (c) cooking an egg (d) milk turning to curd
39. 39.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
40. 40.True or false: dissolving salt is a change that can be undone. (a) True (b) False

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