Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 258 · 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: the kind of salt is kept the same. (a) True (b) False
2. 2.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
3. 3.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
4. 4.⚖️ 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
5. 5.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
6. 6.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
7. 7.🔮 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
8. 8.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) yeast (c) a spoon (d) a magnet
9. 9.⚖️ 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 measure it (b) we change it (c) we keep it the same
10. 10.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
11. 11.⚖️ 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 amount of salt (c) sunny or shady place (d) the amount of water
12. 12.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) warm water (c) a spoon (d) yeast
13. 13.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
14. 14.🧂 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
15. 15.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
16. 16.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) fish make it (c) sea water evaporates (d) salt rains down
17. 17.🧺 Which of these is not needed for growing salt crystals? (a) turmeric powder (b) a piece of string (c) salt (d) a spoon
18. 18.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
19. 19.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
20. 20.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
21. 21.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a balloon (c) a spoon (d) warm water
22. 22.True or false: sawdust does not dissolve in water. (a) True (b) False
23. 23.⚖️ 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) the amount of salt
24. 24.⚖️ 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 keep it the same (b) we change it (c) we measure it
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) warm water (c) a balloon (d) a piece of string
26. 26.🧈 Which of these is a change that cannot be undone? (a) cooking an egg (b) melting ice (c) folding paper (d) freezing water
27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is what we measure. (a) True (b) False
28. 28.🧂 Which of these dissolves in water? (a) sawdust (b) cooking oil (c) sand (d) table salt
29. 29.🔍 Which is the odd one out? (a) glucose powder (b) sand (c) sawdust (d) small pebbles
30. 30.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False
31. 31.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) salt (c) warm water (d) a shallow dish
32. 32.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
33. 33.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
34. 34.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a shallow dish (c) a piece of string (d) a mirror
35. 35.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
36. 36.True or false: freezing water is a change that cannot be undone. (a) False (b) True
37. 37.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) salt (d) turmeric powder
39. 39.⚖️ 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 change it (c) we measure it
40. 40.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) frozen (c) saturated (d) empty

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