Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 289 · 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 chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
2. 2.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) melting butter (c) rusting iron (d) cooking an egg
3. 3.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
4. 4.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) baking a cake (c) dissolving salt (d) rusting iron
5. 5.🛟 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
6. 6.True or false: sand dissolves in water. (a) True (b) False
7. 7.⚖️ 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 salt (c) the same dish (d) days to see crystals
8. 8.⚖️ 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) the kind of salt (b) days to see crystals (c) the same dish (d) sunny or shady place
9. 9.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) turmeric powder (c) a mirror (d) warm water
10. 10.True or false: baking a cake is a change that cannot be undone. (a) True (b) False
11. 11.🧈 Which of these is a change that can be undone? (a) freezing water (b) milk turning to curd (c) browning lemon ink (d) cooking an egg
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 water”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
14. 14.⚖️ 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 measure it (c) we keep it the same
15. 15.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) freezing water (c) cooking an egg (d) dissolving salt
16. 16.True or false: sugar dissolves in water. (a) True (b) False
17. 17.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
18. 18.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
19. 19.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a piece of string (d) turmeric powder
20. 20.🔍 Which is the odd one out? (a) chalk powder (b) sawdust (c) small pebbles (d) glucose powder
21. 21.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
22. 22.🧂 Which of these dissolves in water? (a) chalk powder (b) small pebbles (c) sand (d) table salt
23. 23.⚖️ 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) sunny or shady place (c) the kind of salt
24. 24.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it turns sweet (c) few or no crystals (d) it fizzes
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a balloon (c) salt (d) a spoon
26. 26.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) salt crystals form (c) sugar crystals form (d) it turns to butter
27. 27.🔍 Which is the odd one out? (a) food colour (b) table salt (c) small pebbles (d) baking soda
28. 28.True or false: a mirror is needed for growing salt crystals. (a) False (b) True
29. 29.True or false: sand does not dissolve in water. (a) True (b) False
30. 30.🧂 Which of these does not dissolve in water? (a) baking soda (b) sugar (c) glucose powder (d) chalk powder
31. 31.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) turmeric powder (c) a balloon (d) a piece of string
32. 32.⚖️ 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) True (b) False
33. 33.🧂 Which of these dissolves in water? (a) food colour (b) sawdust (c) sand (d) small pebbles
34. 34.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) baking soda (b) food colour (c) glucose powder (d) sawdust
36. 36.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) sea water evaporates (c) sand is ground up (d) salt rains down
37. 37.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
38. 38.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a balloon (c) a spoon (d) a piece of string
39. 39.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
40. 40.⚖️ 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 keep it the same (c) we change it

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