Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 61 · 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.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
2. 2.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny stars (c) tiny spheres (d) tiny triangles
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a shallow dish (c) yeast (d) a piece of string
4. 4.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
5. 5.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) a mirror (c) a battery cell (d) a magnet
6. 6.⚖️ 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 same dish (b) sunny or shady place (c) the amount of salt (d) days to see crystals
7. 7.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
8. 8.🧂 Which of these dissolves in water? (a) food colour (b) chalk powder (c) small pebbles (d) sand
9. 9.🔍 Which is the odd one out? (a) food colour (b) table salt (c) sand (d) glucose powder
10. 10.🔍 Which is the odd one out? (a) glucose powder (b) baking soda (c) cooking oil (d) table salt
11. 11.True or false: glucose powder does not dissolve in water. (a) False (b) True
12. 12.⚖️ 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 keep it the same (b) we change it (c) we measure it
13. 13.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a mirror (c) a balloon (d) salt
14. 14.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
15. 15.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
16. 16.🧂 Which of these does not dissolve in water? (a) baking soda (b) small pebbles (c) table salt (d) sugar
17. 17.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
18. 18.🔍 Which is the odd one out? (a) table salt (b) food colour (c) sugar (d) small pebbles
19. 19.🧂 Which of these dissolves in water? (a) sand (b) cooking oil (c) table salt (d) chalk powder
20. 20.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) salt eats water (c) the dish melts (d) water evaporates
21. 21.🔮 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
22. 22.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
23. 23.🧂 Which of these does not dissolve in water? (a) food colour (b) table salt (c) sugar (d) sawdust
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) turmeric powder (c) warm water (d) a shallow dish
25. 25.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
26. 26.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
27. 27.True or false: food colour dissolves in water. (a) True (b) False
28. 28.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
29. 29.⚖️ 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) days to see crystals (b) the kind of salt (c) sunny or shady place (d) the amount of water
30. 30.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
31. 31.⚖️ 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 measure it (c) we change it
32. 32.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) dissolving salt (c) freezing water (d) cooking an egg
33. 33.⚖️ 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 change it (b) we measure it (c) we keep it the same
34. 34.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
35. 35.True or false: folding paper is a change that can be undone. (a) False (b) True
36. 36.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
37. 37.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
38. 38.🧺 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) salt
39. 39.True or false: table salt does not dissolve in water. (a) False (b) True
40. 40.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a piece of string (c) salt (d) a magnet

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