Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 692 · 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.True or false: yeast is not needed for growing salt crystals. (a) True (b) False
2. 2.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
3. 3.True or false: cooking oil dissolves in water. (a) False (b) True
4. 4.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a spoon (c) turmeric powder (d) a battery cell
5. 5.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
6. 6.🧂 Which of these dissolves in water? (a) chalk powder (b) small pebbles (c) glucose powder (d) sawdust
7. 7.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) water evaporates (c) salt eats water (d) salt grows roots
8. 8.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
9. 9.⚖️ 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 amount of water (b) the same dish (c) the kind of salt (d) sunny or shady place
10. 10.True or false: sawdust dissolves in water. (a) True (b) False
11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is what we measure. (a) False (b) True
12. 12.🧂 Which of these dissolves in water? (a) cooking oil (b) baking soda (c) small pebbles (d) chalk powder
13. 13.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
14. 14.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it turns sweet (c) it fizzes (d) crystals grow faster
15. 15.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
16. 16.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) frozen (c) magnetic (d) saturated
17. 17.🧂 Which of these does not dissolve in water? (a) table salt (b) glucose powder (c) baking soda (d) chalk powder
18. 18.⚖️ 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
19. 19.🛟 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
20. 20.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) sand is ground up (c) fish make it (d) sea water evaporates
21. 21.🔍 Which is the odd one out? (a) glucose powder (b) baking soda (c) sand (d) table salt
22. 22.True or false: rusting iron is a change that can be undone. (a) False (b) True
23. 23.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
24. 24.🔍 Which is the odd one out? (a) food colour (b) sand (c) sawdust (d) small pebbles
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a battery cell (c) a shallow dish (d) a spoon
26. 26.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
27. 27.⚖️ 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 change it (b) we keep it the same (c) we measure it
28. 28.🔍 Which is the odd one out? (a) small pebbles (b) sugar (c) food colour (d) baking soda
29. 29.⚖️ 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 change it (b) we keep it the same (c) we measure it
30. 30.True or false: a balloon is not needed for growing salt crystals. (a) True (b) False
31. 31.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) True (b) False
32. 32.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
33. 33.True or false: sugar does not dissolve in water. (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 spoon (d) a magnet
35. 35.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a piece of string (c) a magnet (d) a balloon
36. 36.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny cubes (c) tiny triangles (d) tiny stars
37. 37.True or false: a magnet is not needed for growing salt crystals. (a) True (b) False
38. 38.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
39. 39.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
40. 40.⚖️ 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 measure it (b) we keep it the same (c) we change it

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