Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 757 · 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 does not dissolve in water? (a) table salt (b) food colour (c) sand (d) sugar
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) a shallow dish (c) warm water (d) a piece of string
3. 3.⚖️ 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 measure it (b) we keep it the same (c) we change it
4. 4.🔍 Which is the odd one out? (a) sawdust (b) chalk powder (c) glucose powder (d) cooking oil
5. 5.True or false: sawdust does not dissolve in water. (a) False (b) True
6. 6.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) warm water (c) turmeric powder (d) a balloon
7. 7.True or false: baking a cake is a change that cannot be undone. (a) False (b) True
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a shallow dish (d) a magnet
9. 9.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) a shallow dish (d) turmeric powder
10. 10.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
11. 11.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False
12. 12.🧺 Which of these is not needed for growing salt crystals? (a) a balloon (b) a spoon (c) warm water (d) a shallow dish
13. 13.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny triangles (c) tiny cubes (d) tiny stars
14. 14.🧂 Why do we stir in salt until no more will dissolve? (a) to change its colour (b) to make it very salty (c) to make it fizz (d) to cool the water
15. 15.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
16. 16.⚖️ 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 salt (b) days to see crystals (c) the kind of salt (d) sunny or shady place
17. 17.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) baking a cake (c) folding paper (d) milk turning to curd
18. 18.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a shallow dish (c) a mirror (d) a spoon
19. 19.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
20. 20.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) yeast (c) a mirror (d) a spoon
21. 21.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) safe from small children (c) in a busy doorway (d) on the edge of a table
22. 22.🔮 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
23. 23.⚖️ 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 amount of salt (b) days to see crystals (c) sunny or shady place
24. 24.⚖️ 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 amount of water
25. 25.⚖️ 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
26. 26.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
27. 27.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt eats water (c) salt grows roots (d) water evaporates
28. 28.True or false: salt is needed for growing salt crystals. (a) False (b) True
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 change it (b) we keep it the same (c) we measure it
30. 30.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a battery cell (c) a shallow dish (d) a balloon
31. 31.⚖️ 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 keep it the same (b) we measure it (c) we change it
32. 32.🧈 Which of these is a change that cannot be undone? (a) baking a cake (b) folding paper (c) melting butter (d) freezing water
33. 33.⚖️ 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) True (b) False
34. 34.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) dissolving salt (c) rusting iron (d) melting butter
35. 35.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) salt rains down (c) sand is ground up (d) sea water evaporates
36. 36.⚖️ 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
37. 37.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to oil (c) it turns to butter (d) sugar crystals form
38. 38.🧂 Which of these does not dissolve in water? (a) sawdust (b) baking soda (c) glucose powder (d) table salt
39. 39.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a magnet (c) a piece of string (d) a shallow dish
40. 40.⚖️ 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) sunny or shady place (c) the kind of salt

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