Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 1 · 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.⚖️ 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) sunny or shady place (c) the kind of salt (d) days to see crystals
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.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
4. 4.True or false: food colour does not dissolve in water. (a) True (b) False
5. 5.True or false: chalk powder does not dissolve in water. (a) True (b) False
6. 6.🧂 Which of these does not dissolve in water? (a) sawdust (b) table salt (c) glucose powder (d) food colour
7. 7.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
8. 8.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) warm water (c) a spoon (d) a magnet
9. 9.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
10. 10.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a piece of string (c) a spoon (d) turmeric powder
11. 11.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
12. 12.True or false: freezing water is a change that can be undone. (a) True (b) False
13. 13.⚖️ 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 change it (b) we keep it the same (c) we measure it
14. 14.🧂 Which of these dissolves in water? (a) baking soda (b) chalk powder (c) cooking oil (d) small pebbles
15. 15.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
16. 16.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny cubes (c) tiny spheres (d) tiny triangles
17. 17.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) empty (c) frozen (d) magnetic
18. 18.🧂 Which of these does not dissolve in water? (a) baking soda (b) table salt (c) food colour (d) sand
19. 19.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) salt (c) a balloon (d) a shallow dish
20. 20.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) warm water (c) turmeric powder (d) a mirror
21. 21.True or false: glucose powder dissolves in water. (a) False (b) True
22. 22.🧂 Which of these dissolves in water? (a) small pebbles (b) sand (c) sugar (d) chalk powder
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) False (b) True
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a battery cell (d) a piece of string
25. 25.⚖️ 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) the kind of salt (c) sunny or shady place
26. 26.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
27. 27.⚖️ 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) the same dish (c) the amount of salt (d) the amount of water
28. 28.🔍 Which is the odd one out? (a) table salt (b) sugar (c) food colour (d) small pebbles
29. 29.⚖️ 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
30. 30.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
31. 31.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
32. 32.🧂 Which of these does not dissolve in water? (a) sugar (b) glucose powder (c) table salt (d) chalk powder
33. 33.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
34. 34.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
35. 35.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
36. 36.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) in a busy doorway (c) on the edge of a table (d) next to the baby
37. 37.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
38. 38.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
39. 39.⚖️ 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 measure it (b) we change it (c) we keep it the same
40. 40.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child

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