Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 998 · 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? What do we do with “sunny or shady place”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.True or false: table salt does not dissolve in water. (a) True (b) False
3. 3.🧂 Why do we stir in salt until no more will dissolve? (a) to cool the water (b) to change its colour (c) to make it very salty (d) to make it fizz
4. 4.True or false: glucose powder does not dissolve in water. (a) True (b) False
5. 5.⚖️ 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 kind of salt (b) the same dish (c) the amount of water (d) days to see crystals
6. 6.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) yeast (c) a balloon (d) turmeric powder
7. 7.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a shallow dish (c) a spoon (d) a balloon
8. 8.True or false: yeast is needed for growing salt crystals. (a) True (b) False
9. 9.⚖️ 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
10. 10.True or false: cooking an egg is a change that can be undone. (a) False (b) True
11. 11.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) a magnet (d) a spoon
12. 12.⚖️ 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 keep it the same (c) we change it
13. 13.⚖️ 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) the same dish (c) days to see crystals (d) sunny or shady place
14. 14.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the amount of salt (b) days to see crystals (c) sunny or shady place
15. 15.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
16. 16.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) magnetic (c) frozen (d) empty
17. 17.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) melting butter (c) melting ice (d) cooking an egg
18. 18.True or false: chalk powder dissolves in water. (a) False (b) True
19. 19.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a shallow dish (d) a battery cell
21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a spoon (d) a mirror
22. 22.True or false: warm water is needed for growing salt crystals. (a) True (b) False
23. 23.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
24. 24.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the amount of water (b) sunny or shady place (c) days to see crystals
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) yeast (c) salt (d) a shallow dish
26. 26.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) in a busy doorway (c) next to the baby (d) safe from small children
27. 27.🧂 Which of these dissolves in water? (a) small pebbles (b) cooking oil (c) sand (d) baking soda
28. 28.True or false: cooking oil dissolves in water. (a) True (b) False
29. 29.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
30. 30.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
31. 31.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) crystals grow faster (c) few or no crystals (d) it fizzes
32. 32.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny cubes (c) tiny triangles (d) tiny spheres
33. 33.🔍 Which is the odd one out? (a) glucose powder (b) baking soda (c) sugar (d) sand
34. 34.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
35. 35.True or false: melting butter is a change that cannot be undone. (a) True (b) False
36. 36.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
37. 37.🔍 Which is the odd one out? (a) chalk powder (b) sugar (c) sand (d) sawdust
38. 38.True or false: a balloon is not needed for growing salt crystals. (a) False (b) True
39. 39.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
40. 40.🧺 Which of these is not needed for growing salt crystals? (a) a battery cell (b) salt (c) a spoon (d) a piece of string

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