Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 89 · 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? What do we do with “sunny or shady place”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
3. 3.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
4. 4.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) a mirror (d) a spoon
5. 5.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) it turns sweet (c) few or no crystals (d) crystals grow faster
6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a shallow dish (d) a balloon
7. 7.⚖️ 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) sunny or shady place (d) days to see crystals
8. 8.True or false: yeast is not needed for growing salt crystals. (a) True (b) False
9. 9.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
10. 10.⚖️ 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 same dish (b) days to see crystals (c) sunny or shady place
11. 11.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
12. 12.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a piece of string (c) yeast (d) a mirror
13. 13.🧈 Which of these is a change that can be undone? (a) rusting iron (b) milk turning to curd (c) cooking an egg (d) melting ice
14. 14.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
15. 15.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to butter (c) salt crystals form (d) it turns to oil
16. 16.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is what we measure. (a) False (b) True
17. 17.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) water evaporates (c) the dish melts (d) salt grows roots
18. 18.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) dissolving salt (c) cooking an egg (d) folding paper
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.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
21. 21.True or false: turmeric powder is not needed for growing salt crystals. (a) True (b) False
22. 22.True or false: small pebbles dissolves in water. (a) False (b) True
23. 23.True or false: milk turning to curd is a change that cannot be undone. (a) True (b) False
24. 24.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) yeast (c) a magnet (d) a spoon
25. 25.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) milk turning to curd (c) rusting iron (d) folding paper
26. 26.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
27. 27.⚖️ 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 change it (b) we keep it the same (c) we measure it
28. 28.🧂 Which of these does not dissolve in water? (a) glucose powder (b) sand (c) sugar (d) table salt
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 salt”? (a) we keep it the same (b) we measure it (c) we change it
30. 30.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) turmeric powder (c) a shallow dish (d) a battery cell
31. 31.True or false: browning lemon ink is a change that can be undone. (a) True (b) False
32. 32.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
33. 33.True or false: sawdust dissolves in water. (a) True (b) False
34. 34.🧂 Which of these does not dissolve in water? (a) baking soda (b) cooking oil (c) table salt (d) sugar
35. 35.⚖️ 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 measure it (c) we keep it the same
36. 36.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
37. 37.🔍 Which is the odd one out? (a) chalk powder (b) cooking oil (c) sawdust (d) food colour
38. 38.True or false: cooking an egg is a change that cannot be undone. (a) True (b) False
39. 39.🧂 Why do we stir in salt until no more will dissolve? (a) to make it fizz (b) to change its colour (c) to cool the water (d) to make it very salty
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 change it (c) we keep it the same

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