Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 359 · 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) sand (b) glucose powder (c) small pebbles (d) chalk powder
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) a piece of string (d) a mirror
3. 3.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) days to see crystals (b) the kind of salt (c) the same dish (d) sunny or shady place
4. 4.True or false: rusting iron is a change that can be undone. (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 the one thing we change? (a) days to see crystals (b) the amount of salt (c) sunny or shady place (d) the kind of salt
6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) a shallow dish (c) a spoon (d) warm water
7. 7.🔍 Which is the odd one out? (a) table salt (b) chalk powder (c) sugar (d) baking soda
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) warm water (c) salt (d) yeast
9. 9.⚖️ 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
10. 10.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) salt (c) a magnet (d) a piece of string
11. 11.True or false: baking a cake is a change that cannot be undone. (a) True (b) False
12. 12.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) baking a cake (c) dissolving salt (d) rusting iron
13. 13.True or false: table salt dissolves in water. (a) False (b) True
14. 14.⚖️ 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 keep it the same (b) we change it (c) we measure it
15. 15.🔍 Which is the odd one out? (a) food colour (b) glucose powder (c) table salt (d) sawdust
16. 16.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) on the edge of a table (c) in a busy doorway (d) next to the baby
17. 17.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
18. 18.⚖️ 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 measure it (b) we change it (c) we keep it the same
19. 19.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
20. 20.🧂 Which of these dissolves in water? (a) food colour (b) chalk powder (c) cooking oil (d) sawdust
21. 21.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a shallow dish (c) salt (d) yeast
22. 22.True or false: a magnet is not needed for growing salt crystals. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) food colour (b) baking soda (c) glucose powder (d) sand
24. 24.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
25. 25.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a balloon (c) turmeric powder (d) salt
26. 26.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) crystals grow faster (c) it turns sweet (d) it fizzes
27. 27.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
28. 28.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny triangles (c) tiny cubes (d) tiny stars
29. 29.⚖️ 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 keep it the same (b) we measure it (c) we change it
30. 30.🧂 Which of these does not dissolve in water? (a) food colour (b) glucose powder (c) sugar (d) sawdust
31. 31.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) True (b) False
32. 32.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
33. 33.⚖️ 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 same dish (c) sunny or shady place
34. 34.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) liquid crystals (c) bigger crystals (d) smaller crystals
35. 35.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) small pebbles (d) sugar
36. 36.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) salt (d) a balloon
37. 37.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a piece of string (c) salt (d) a battery cell
39. 39.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) folding paper (c) browning lemon ink (d) melting butter
40. 40.🔍 Which is the odd one out? (a) glucose powder (b) sugar (c) food colour (d) cooking oil

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