Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 977 · 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.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
2. 2.⚖️ 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 measure it (b) we change it (c) we keep it the same
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) warm water (d) a magnet
4. 4.🧂 Which of these does not dissolve in water? (a) chalk powder (b) table salt (c) glucose powder (d) sugar
5. 5.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) the dish melts (c) water evaporates (d) salt eats water
6. 6.True or false: rusting iron is a change that can be undone. (a) True (b) False
7. 7.🔮 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
8. 8.True or false: a balloon is not needed for growing salt crystals. (a) False (b) True
9. 9.True or false: a balloon is needed for growing salt crystals. (a) False (b) True
10. 10.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a spoon (c) a magnet (d) turmeric powder
11. 11.🧂 Which of these does not dissolve in water? (a) glucose powder (b) sugar (c) table salt (d) sand
12. 12.⚖️ 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) days to see crystals (b) sunny or shady place (c) the same dish (d) the amount of water
13. 13.True or false: yeast is needed for growing salt crystals. (a) False (b) True
14. 14.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
15. 15.🧂 Which of these does not dissolve in water? (a) sugar (b) glucose powder (c) small pebbles (d) table salt
16. 16.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
17. 17.⚖️ 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
18. 18.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a battery cell (c) a magnet (d) warm water
19. 19.🔍 Which is the odd one out? (a) cooking oil (b) glucose powder (c) table salt (d) sugar
20. 20.🧂 Which of these does not dissolve in water? (a) food colour (b) table salt (c) cooking oil (d) glucose powder
21. 21.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
22. 22.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny cubes (c) tiny triangles (d) tiny spheres
23. 23.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
24. 24.🔍 Which is the odd one out? (a) food colour (b) sugar (c) chalk powder (d) baking soda
25. 25.🔍 Which is the odd one out? (a) baking soda (b) sand (c) food colour (d) glucose powder
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) days to see crystals (b) the amount of salt (c) the kind of salt (d) sunny or shady place
27. 27.🧺 Which of these is not needed for growing salt crystals? (a) a mirror (b) warm water (c) a shallow dish (d) a spoon
28. 28.⚖️ 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
29. 29.True or false: baking soda dissolves in water. (a) False (b) True
30. 30.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) warm water (c) a magnet (d) salt
31. 31.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
32. 32.🧈 Which of these is a change that can be undone? (a) dissolving salt (b) browning lemon ink (c) cooking an egg (d) milk turning to curd
33. 33.🧂 Which of these dissolves in water? (a) sand (b) chalk powder (c) small pebbles (d) glucose powder
34. 34.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) next to the baby (c) on the edge of a table (d) safe from small children
35. 35.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) False (b) True
36. 36.🧂 Which of these dissolves in water? (a) sand (b) baking soda (c) cooking oil (d) chalk powder
37. 37.True or false: folding paper is a change that cannot be undone. (a) False (b) True
38. 38.True or false: melting ice is a change that cannot be undone. (a) False (b) True
39. 39.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
40. 40.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) yeast (c) a shallow dish (d) salt

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