Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 380 · 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.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) salt (c) warm water (d) a balloon
2. 2.⚖️ 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 measure it (b) we change it (c) we keep it the same
3. 3.True or false: folding paper is a change that cannot be undone. (a) True (b) False
4. 4.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is what we measure. (a) True (b) False
5. 5.⚖️ 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) the kind of salt (b) sunny or shady place (c) the same dish (d) days to see crystals
6. 6.🧂 Which of these does not dissolve in water? (a) baking soda (b) glucose powder (c) sugar (d) chalk powder
7. 7.True or false: glucose powder does not dissolve in water. (a) False (b) True
8. 8.🧈 Which of these is a change that can be undone? (a) baking a cake (b) cooking an egg (c) rusting iron (d) dissolving salt
9. 9.True or false: cooking oil dissolves in water. (a) True (b) False
10. 10.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny spheres (c) tiny cubes (d) tiny stars
11. 11.True or false: cooking an egg is a change that can be undone. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) sawdust (b) sugar (c) glucose powder (d) food colour
13. 13.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
14. 14.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
15. 15.⚖️ 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) False (b) True
16. 16.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
17. 17.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
18. 18.⚖️ 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
19. 19.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
20. 20.🧂 Which of these dissolves in water? (a) cooking oil (b) table salt (c) sawdust (d) chalk powder
21. 21.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
22. 22.🧂 Which of these does not dissolve in water? (a) baking soda (b) table salt (c) cooking oil (d) sugar
23. 23.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) it turns sweet (c) few or no crystals (d) crystals grow faster
24. 24.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) fish make it (c) salt rains down (d) sea water evaporates
25. 25.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
26. 26.⚖️ 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 kind of salt (c) days to see crystals (d) the amount of salt
27. 27.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
28. 28.⚖️ 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
29. 29.True or false: salt is needed for growing salt crystals. (a) False (b) True
30. 30.True or false: a magnet is needed for growing salt crystals. (a) False (b) True
31. 31.🧂 Which of these does not dissolve in water? (a) table salt (b) glucose powder (c) sugar (d) sand
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a piece of string (d) a magnet
33. 33.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
34. 34.True or false: milk turning to curd is a change that cannot be undone. (a) True (b) False
35. 35.🧈 Which of these is a change that can be undone? (a) baking a cake (b) rusting iron (c) freezing water (d) cooking an egg
36. 36.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a battery cell (c) a mirror (d) warm water
37. 37.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
38. 38.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) True (b) False
39. 39.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) the dish melts (c) salt grows roots (d) water evaporates
40. 40.⚖️ 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

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