Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 191 · 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.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) turmeric powder (c) a shallow dish (d) salt
2. 2.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a balloon (c) turmeric powder (d) a shallow dish
3. 3.⚖️ 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 same dish (b) days to see crystals (c) sunny or shady place (d) the amount of salt
4. 4.⚖️ 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 measure it (c) we keep it the same
5. 5.⚖️ 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 amount of water (b) days to see crystals (c) the amount of salt (d) the kind of salt
6. 6.True or false: salt is needed for growing salt crystals. (a) True (b) False
7. 7.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny triangles (c) tiny spheres (d) tiny stars
8. 8.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
9. 9.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
10. 10.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
11. 11.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
12. 12.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
13. 13.True or false: folding paper is a change that cannot be undone. (a) True (b) False
14. 14.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
15. 15.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
16. 16.🧺 Which of these is not needed for growing salt crystals? (a) a balloon (b) a spoon (c) a shallow dish (d) a piece of string
17. 17.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) few or no crystals (c) crystals grow faster (d) it turns sweet
18. 18.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
19. 19.🧺 Which of these is not needed for growing salt crystals? (a) yeast (b) a piece of string (c) warm water (d) a shallow dish
20. 20.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
21. 21.🧈 Which of these is a change that can be undone? (a) rusting iron (b) browning lemon ink (c) cooking an egg (d) dissolving salt
22. 22.⚖️ 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
23. 23.⚖️ 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
24. 24.🔍 Which is the odd one out? (a) sugar (b) table salt (c) sand (d) baking soda
25. 25.True or false: table salt does not dissolve in water. (a) False (b) True
26. 26.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
27. 27.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
28. 28.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
29. 29.True or false: a piece of string is needed for growing salt crystals. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) baking soda (b) sawdust (c) table salt (d) sugar
31. 31.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
32. 32.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) a balloon (c) a mirror (d) a battery cell
33. 33.🔍 Which is the odd one out? (a) small pebbles (b) food colour (c) table salt (d) sugar
34. 34.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) folding paper (c) melting butter (d) browning lemon ink
35. 35.⚖️ 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
36. 36.🧂 Which of these dissolves in water? (a) sugar (b) cooking oil (c) chalk powder (d) sawdust
37. 37.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) sea water evaporates (c) fish make it (d) sand is ground up
38. 38.🧂 Which of these does not dissolve in water? (a) baking soda (b) table salt (c) small pebbles (d) glucose powder
39. 39.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
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 amount of salt

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