Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 610 · 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.True or false: cooking an egg is a change that cannot be undone. (a) False (b) True
2. 2.True or false: glucose powder dissolves in water. (a) True (b) False
3. 3.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
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 kept the same. (a) False (b) True
5. 5.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
6. 6.True or false: small pebbles dissolves in water. (a) False (b) True
7. 7.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) in a busy doorway (c) on the edge of a table (d) safe from small children
8. 8.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a magnet (c) a spoon (d) a piece of string
9. 9.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) warm water (d) a balloon
10. 10.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
11. 11.⚖️ 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 measure it (c) we change it
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 salt (c) days to see crystals
13. 13.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a shallow dish (d) turmeric powder
14. 14.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) a spoon (d) a magnet
15. 15.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
16. 16.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a battery cell (c) a shallow dish (d) a balloon
17. 17.True or false: food colour does not dissolve in water. (a) True (b) False
18. 18.🧂 Which of these dissolves in water? (a) cooking oil (b) small pebbles (c) chalk powder (d) glucose powder
19. 19.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is what we measure. (a) True (b) False
20. 20.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
21. 21.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
22. 22.⚖️ 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) False (b) True
23. 23.🔍 Which is the odd one out? (a) chalk powder (b) baking soda (c) sawdust (d) small pebbles
24. 24.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) salt rains down (c) sea water evaporates (d) fish make it
25. 25.True or false: cooking an egg is a change that can be undone. (a) False (b) True
26. 26.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) the dish melts (c) water evaporates (d) salt grows roots
27. 27.True or false: melting butter is a change that can be undone. (a) True (b) False
28. 28.True or false: sugar does not dissolve in water. (a) True (b) False
29. 29.⚖️ 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 change it (b) we keep it the same (c) we measure it
30. 30.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
31. 31.True or false: cooking oil does not dissolve in water. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) sand (b) glucose powder (c) sawdust (d) small pebbles
33. 33.⚖️ 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 amount of salt (b) the amount of water (c) days to see crystals (d) sunny or shady place
34. 34.True or false: baking a cake is a change that can be undone. (a) True (b) False
35. 35.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
36. 36.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
37. 37.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a shallow dish (c) a battery cell (d) salt
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a mirror (c) warm water (d) a spoon
39. 39.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
40. 40.🔍 Which is the odd one out? (a) sand (b) small pebbles (c) sugar (d) chalk powder

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