Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 501 · 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 a battery cell for growing salt crystals? (a) not needed (b) needed
2. 2.🧈 Which of these is a change that cannot be undone? (a) cooking an egg (b) melting ice (c) freezing water (d) dissolving salt
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a piece of string (c) a mirror (d) salt
4. 4.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is the one thing we change. (a) False (b) True
5. 5.True or false: rusting iron is a change that can be undone. (a) True (b) False
6. 6.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
7. 7.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) next to the baby (c) in a busy doorway (d) safe from small children
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) warm water (c) a shallow dish (d) a balloon
9. 9.⚖️ 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 measure it (b) we keep it the same (c) we change it
10. 10.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
11. 11.🔍 Which is the odd one out? (a) glucose powder (b) sugar (c) table salt (d) chalk powder
12. 12.⚖️ 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 keep it the same (b) we measure it (c) we change it
13. 13.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) turmeric powder (c) salt (d) a spoon
14. 14.🔮 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
15. 15.True or false: milk turning to curd is a change that cannot be undone. (a) False (b) True
16. 16.True or false: a piece of string is needed for growing salt crystals. (a) True (b) False
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) yeast (b) a shallow dish (c) salt (d) a piece of string
18. 18.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
19. 19.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) milk turning to curd (c) freezing water (d) rusting iron
20. 20.True or false: melting butter is a change that can be undone. (a) False (b) True
21. 21.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) fish make it (c) sand is ground up (d) sea water evaporates
22. 22.🧂 Which of these does not dissolve in water? (a) glucose powder (b) food colour (c) sawdust (d) table salt
23. 23.⚖️ 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
24. 24.🔍 Which is the odd one out? (a) cooking oil (b) baking soda (c) food colour (d) glucose powder
25. 25.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting ice (c) milk turning to curd (d) dissolving salt
26. 26.🧈 Which of these is a change that can be undone? (a) folding paper (b) milk turning to curd (c) browning lemon ink (d) baking a cake
27. 27.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a magnet (c) salt (d) a battery cell
28. 28.🔍 Which is the odd one out? (a) cooking oil (b) glucose powder (c) small pebbles (d) chalk powder
29. 29.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a piece of string (c) yeast (d) salt
30. 30.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
31. 31.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) True (b) False
32. 32.🧺 Which of these is not needed for growing salt crystals? (a) turmeric powder (b) a shallow dish (c) warm water (d) a spoon
33. 33.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
34. 34.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
35. 35.True or false: small pebbles does not dissolve in water. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) sawdust (b) sand (c) food colour (d) small pebbles
37. 37.⚖️ 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
38. 38.⚖️ 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) the amount of water (c) the kind of salt (d) days to see crystals
39. 39.⚖️ 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
40. 40.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed

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