Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 213 · 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 of these is needed for growing salt crystals? (a) turmeric powder (b) a battery cell (c) warm water (d) yeast
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) warm water (c) salt (d) a balloon
3. 3.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
4. 4.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) salt (c) a shallow dish (d) turmeric powder
5. 5.🧺 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 shallow dish
6. 6.⚖️ 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 change it (c) we keep it the same
7. 7.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) the dish melts (c) salt eats water (d) water evaporates
8. 8.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is the one thing we change. (a) False (b) True
9. 9.🧂 Which of these does not dissolve in water? (a) table salt (b) glucose powder (c) food colour (d) sand
10. 10.🛟 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
11. 11.🧺 Which of these is needed for growing salt crystals? (a) a shallow dish (b) a mirror (c) turmeric powder (d) a battery cell
12. 12.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a battery cell (c) a balloon (d) a spoon
13. 13.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
14. 14.True or false: small pebbles does not dissolve in water. (a) False (b) True
15. 15.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
16. 16.⚖️ 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 keep it the same (c) we measure it
17. 17.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) safe from small children (c) in a busy doorway (d) next to the baby
18. 18.⚖️ 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
19. 19.🔍 Which is the odd one out? (a) sawdust (b) baking soda (c) table salt (d) sugar
20. 20.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is the one thing we change. (a) False (b) True
21. 21.True or false: melting butter is a change that can be undone. (a) True (b) False
22. 22.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True
23. 23.True or false: food colour does not dissolve in water. (a) False (b) True
24. 24.⚖️ 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) True (b) False
25. 25.True or false: sand does not dissolve in water. (a) True (b) False
26. 26.True or false: folding paper is a change that can be undone. (a) True (b) False
27. 27.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
28. 28.True or false: baking soda does not dissolve in water. (a) True (b) False
29. 29.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny triangles (c) tiny spheres (d) tiny cubes
30. 30.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) False (b) True
31. 31.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
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 what we measure. (a) True (b) False
33. 33.🧂 Why do we stir in salt until no more will dissolve? (a) to cool the water (b) to make it fizz (c) to change its colour (d) to make it very salty
34. 34.True or false: melting butter is a change that cannot be undone. (a) False (b) True
35. 35.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to oil (c) it turns to butter (d) salt crystals form
36. 36.True or false: small pebbles dissolves in water. (a) True (b) False
37. 37.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) few or no crystals (c) crystals grow faster (d) it fizzes
38. 38.True or false: warm water is needed for growing salt crystals. (a) False (b) True
39. 39.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
40. 40.⚖️ 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) sunny or shady place (c) the amount of salt (d) days to see crystals

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