Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 968 · 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? Which of these is the one thing we change? (a) sunny or shady place (b) the amount of water (c) the kind of salt (d) days to see crystals
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) a shallow dish (c) salt (d) a piece of string
3. 3.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
4. 4.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) yeast (c) a magnet (d) a piece of string
5. 5.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) glucose powder (b) food colour (c) cooking oil (d) sugar
7. 7.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
8. 8.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) no crystals (c) liquid crystals (d) bigger crystals
9. 9.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
10. 10.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it turns sweet (c) it fizzes (d) few or no crystals
11. 11.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny triangles (c) tiny stars (d) tiny cubes
12. 12.True or false: a magnet is not needed for growing salt crystals. (a) False (b) True
13. 13.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
14. 14.True or false: table salt dissolves in water. (a) True (b) False
15. 15.⚖️ 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 kind of salt (d) the amount of salt
16. 16.🔍 Which is the odd one out? (a) sand (b) glucose powder (c) cooking oil (d) sawdust
17. 17.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) dissolving salt (c) melting ice (d) cooking an egg
18. 18.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
19. 19.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
20. 20.⚖️ 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 keep it the same (c) we change it
21. 21.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is what we measure. (a) True (b) False
22. 22.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) salt (d) turmeric powder
23. 23.🧈 Which of these is a change that cannot be undone? (a) rusting iron (b) dissolving salt (c) melting ice (d) folding paper
24. 24.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
25. 25.⚖️ 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) False (b) True
26. 26.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
27. 27.🌊 How is salt made in salt pans by the sea? (a) sea water evaporates (b) salt rains down (c) sand is ground up (d) fish make it
28. 28.🔍 Which is the odd one out? (a) sand (b) glucose powder (c) table salt (d) baking soda
29. 29.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
30. 30.True or false: yeast is not needed for growing salt crystals. (a) True (b) False
31. 31.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
32. 32.⚖️ 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 measure it (b) we keep it the same (c) we change it
33. 33.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) a piece of string (d) a battery cell
34. 34.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
35. 35.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a shallow dish (c) a battery cell (d) a magnet
36. 36.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
37. 37.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) on the edge of a table (c) safe from small children (d) in a busy doorway
38. 38.🧂 Which of these does not dissolve in water? (a) food colour (b) sawdust (c) sugar (d) table salt
39. 39.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) salt (c) yeast (d) warm 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) the kind of salt (b) days to see crystals (c) sunny or shady place

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