Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 801 · 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.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a shallow dish (c) a balloon (d) a piece of string
2. 2.🧂 Which of these does not dissolve in water? (a) glucose powder (b) table salt (c) sugar (d) small pebbles
3. 3.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
4. 4.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) crystals grow faster (c) it turns sweet (d) few or no crystals
5. 5.⚖️ 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 change it (c) we keep it the same
6. 6.True or false: a spoon is needed for growing salt crystals. (a) True (b) False
7. 7.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) turmeric powder (d) warm water
8. 8.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) yeast (c) a balloon (d) warm water
9. 9.⚖️ 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
10. 10.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) True (b) False
11. 11.⚖️ 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) days to see crystals (c) the amount of salt (d) the amount of water
12. 12.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) sunny or shady place (b) the amount of water (c) days to see crystals
13. 13.🔍 Which is the odd one out? (a) small pebbles (b) food colour (c) cooking oil (d) sawdust
14. 14.🌊 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
15. 15.🧂 Which of these dissolves in water? (a) cooking oil (b) food colour (c) sawdust (d) chalk powder
16. 16.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
17. 17.True or false: a balloon is not needed for growing salt crystals. (a) False (b) True
18. 18.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) rusting iron (c) milk turning to curd (d) freezing water
19. 19.🔍 Which is the odd one out? (a) sugar (b) baking soda (c) food colour (d) small pebbles
20. 20.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
21. 21.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
22. 22.⚖️ 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 change it (b) we keep it the same (c) we measure it
23. 23.True or false: table salt dissolves in water. (a) True (b) False
24. 24.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) salt eats water (c) the dish melts (d) water evaporates
25. 25.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
26. 26.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny spheres (c) tiny triangles (d) tiny stars
27. 27.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) sugar crystals form (c) salt crystals form (d) it turns to oil
28. 28.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting ice (c) dissolving salt (d) milk turning to curd
29. 29.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
30. 30.🔍 Which is the odd one out? (a) chalk powder (b) small pebbles (c) table salt (d) sawdust
31. 31.⚖️ 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
32. 32.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
33. 33.🔍 Which is the odd one out? (a) sand (b) cooking oil (c) small pebbles (d) glucose powder
34. 34.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
35. 35.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
36. 36.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
37. 37.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) browning lemon ink (c) folding paper (d) freezing water
38. 38.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a battery cell (c) a shallow dish (d) warm water
39. 39.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
40. 40.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we keep it the same (b) we measure it (c) we change it

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