Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 585 · 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.🔍 Which is the odd one out? (a) table salt (b) glucose powder (c) food colour (d) chalk powder
2. 2.True or false: salt is not needed for growing salt crystals. (a) False (b) True
3. 3.⚖️ 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) sunny or shady place (d) the amount of salt
4. 4.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) warm water (c) a battery cell (d) a shallow dish
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: a spoon is needed for growing salt crystals. (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) the same dish (b) the kind of salt (c) days to see crystals (d) sunny or shady place
8. 8.⚖️ 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
9. 9.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
10. 10.🔮 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
11. 11.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) melting butter (c) folding paper (d) browning lemon ink
12. 12.🧂 Which of these does not dissolve in water? (a) glucose powder (b) table salt (c) baking soda (d) cooking oil
13. 13.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) smaller crystals (c) liquid crystals (d) bigger crystals
14. 14.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) dissolving salt (c) folding paper (d) milk turning to curd
15. 15.True or false: warm water is needed for growing salt crystals. (a) True (b) False
16. 16.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) a balloon (c) a mirror (d) yeast
17. 17.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny stars (c) tiny cubes (d) tiny spheres
18. 18.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a balloon (c) a magnet (d) salt
19. 19.True or false: melting ice is a change that can be undone. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) baking soda (b) sugar (c) sand (d) food colour
21. 21.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) empty (c) magnetic (d) frozen
22. 22.🛟 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
23. 23.True or false: a battery cell is needed for growing salt crystals. (a) False (b) True
24. 24.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
25. 25.True or false: dissolving salt is a change that cannot be undone. (a) False (b) True
26. 26.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
27. 27.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) sugar crystals form (c) it turns to butter (d) salt crystals form
28. 28.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) yeast (d) warm water
29. 29.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a spoon (c) a piece of string (d) a magnet
30. 30.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) False (b) True
31. 31.🧂 Which of these dissolves in water? (a) sand (b) table salt (c) sawdust (d) small pebbles
32. 32.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
33. 33.True or false: milk turning to curd is a change that can be undone. (a) False (b) True
34. 34.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) a piece of string (d) a battery cell
35. 35.True or false: sawdust does not dissolve in water. (a) True (b) False
36. 36.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
37. 37.⚖️ 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
38. 38.True or false: freezing water is a change that cannot be undone. (a) False (b) True
39. 39.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
40. 40.🧂 Which of these dissolves in water? (a) sand (b) chalk powder (c) sugar (d) sawdust

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