Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 587 · 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? True or false: sunny or shady place is kept the same. (a) True (b) False
2. 2.True or false: sugar dissolves in water. (a) False (b) True
3. 3.True or false: warm water is needed for growing salt crystals. (a) False (b) True
4. 4.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a battery cell (c) warm water (d) a shallow dish
6. 6.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) few or no crystals (c) it turns sweet (d) it fizzes
7. 7.⚖️ 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
8. 8.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a spoon (c) salt (d) a magnet
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 kept the same. (a) True (b) False
10. 10.🧂 Which of these does not dissolve in water? (a) table salt (b) food colour (c) cooking oil (d) sugar
11. 11.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a piece of string (c) salt (d) yeast
12. 12.True or false: sugar does not dissolve in water. (a) True (b) False
13. 13.🧂 Which of these does not dissolve in water? (a) glucose powder (b) food colour (c) baking soda (d) chalk powder
14. 14.True or false: sawdust does not dissolve in water. (a) False (b) True
15. 15.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
16. 16.True or false: a magnet is not needed for growing salt crystals. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) cooking oil (b) sugar (c) glucose powder (d) baking soda
18. 18.🧈 Which of these is a change that can be undone? (a) baking a cake (b) milk turning to curd (c) folding paper (d) browning lemon ink
19. 19.True or false: melting butter is a change that cannot be undone. (a) True (b) False
20. 20.🧂 Which of these dissolves in water? (a) sand (b) table salt (c) cooking oil (d) sawdust
21. 21.🧂 Which of these dissolves in water? (a) cooking oil (b) small pebbles (c) baking soda (d) sawdust
22. 22.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
23. 23.🔍 Which is the odd one out? (a) chalk powder (b) sugar (c) sawdust (d) cooking oil
24. 24.True or false: chalk powder dissolves in water. (a) True (b) False
25. 25.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
26. 26.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) warm water (c) salt (d) a mirror
27. 27.🔍 Which is the odd one out? (a) baking soda (b) cooking oil (c) sawdust (d) small pebbles
28. 28.⚖️ 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) days to see crystals (c) the amount of salt (d) the same dish
29. 29.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
30. 30.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) sunny or shady place (b) days to see crystals (c) the kind of salt
31. 31.⚖️ 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 change it (b) we keep it the same (c) we measure it
32. 32.True or false: dissolving salt is a change that can be undone. (a) False (b) True
33. 33.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) dissolving salt (c) browning lemon ink (d) folding paper
34. 34.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a spoon (c) yeast (d) a magnet
35. 35.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we change it (b) we measure it (c) we keep it the same
36. 36.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
37. 37.⚖️ 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) sunny or shady place (c) the amount of water (d) the amount of salt
38. 38.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) liquid crystals (c) smaller crystals (d) bigger crystals
39. 39.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) on the edge of a table (c) safe from small children (d) next to the baby
40. 40.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) a balloon (c) yeast (d) turmeric powder

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