Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 735 · 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 sand dissolve in water? (a) dissolves in water (b) does not dissolve
2. 2.🔍 Which is the odd one out? (a) sugar (b) glucose powder (c) chalk powder (d) baking soda
3. 3.True or false: a mirror is not needed for growing salt crystals. (a) False (b) True
4. 4.🧺 Which of these is not needed for growing salt crystals? (a) a balloon (b) a spoon (c) warm water (d) salt
5. 5.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a balloon (c) a spoon (d) turmeric powder
6. 6.True or false: salt is not needed for growing salt crystals. (a) False (b) True
7. 7.🧂 Which of these dissolves in water? (a) sawdust (b) sand (c) small pebbles (d) sugar
8. 8.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it turns sweet (c) crystals grow faster (d) it fizzes
9. 9.🧂 Which of these dissolves in water? (a) sand (b) small pebbles (c) baking soda (d) sawdust
10. 10.⚖️ 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 same dish (c) the amount of salt (d) days to see crystals
11. 11.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
12. 12.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) on the edge of a table (c) next to the baby (d) in a busy doorway
13. 13.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a battery cell (c) a shallow dish (d) a spoon
14. 14.⚖️ 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 change it (b) we measure it (c) we keep it the same
15. 15.True or false: cooking oil dissolves in water. (a) False (b) True
16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) turmeric powder (d) warm water
17. 17.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny cubes (c) tiny spheres (d) tiny triangles
18. 18.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) the dish melts (c) water evaporates (d) salt eats water
19. 19.🧂 Which of these dissolves in water? (a) cooking oil (b) glucose powder (c) sawdust (d) chalk powder
20. 20.True or false: sand dissolves in water. (a) True (b) False
21. 21.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
22. 22.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
23. 23.True or false: food colour dissolves in water. (a) False (b) True
24. 24.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) folding paper (c) cooking an egg (d) melting ice
25. 25.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) salt crystals form (c) sugar crystals form (d) it turns to oil
26. 26.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is what we measure. (a) True (b) False
27. 27.⚖️ 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
28. 28.🌊 How is salt made in salt pans by the sea? (a) sea water evaporates (b) fish make it (c) salt rains down (d) sand is ground up
29. 29.True or false: chalk powder does not dissolve in water. (a) True (b) False
30. 30.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
31. 31.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) sunny or shady place (b) days to see crystals (c) the same dish (d) the amount of salt
32. 32.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
33. 33.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a balloon (c) salt (d) warm water
34. 34.True or false: baking soda dissolves in water. (a) True (b) False
35. 35.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) True (b) False
36. 36.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a shallow dish (c) a magnet (d) salt
37. 37.True or false: a battery cell is not needed for growing salt crystals. (a) True (b) False
38. 38.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
39. 39.True or false: small pebbles does not dissolve in water. (a) False (b) True
40. 40.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed

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