Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 602 · 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.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny spheres (c) tiny cubes (d) tiny triangles
2. 2.🧂 Why do crystals appear as the dish dries? (a) water evaporates (b) the dish melts (c) salt eats water (d) salt grows roots
3. 3.True or false: table salt does not dissolve in water. (a) False (b) True
4. 4.🧈 Which of these is a change that cannot be undone? (a) rusting iron (b) melting butter (c) freezing water (d) folding paper
5. 5.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
6. 6.True or false: small pebbles dissolves in water. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) table salt (b) sawdust (c) baking soda (d) sugar
8. 8.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) salt crystals form (c) it turns to oil (d) it turns to butter
9. 9.🧂 Why do we stir in salt until no more will dissolve? (a) to change its colour (b) to make it fizz (c) to make it very salty (d) to cool the water
10. 10.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) False (b) True
12. 12.🧂 Which of these dissolves in water? (a) sawdust (b) small pebbles (c) food colour (d) cooking oil
13. 13.🧂 Which of these does not dissolve in water? (a) baking soda (b) glucose powder (c) table salt (d) small pebbles
14. 14.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) the youngest child (c) a grown-up (d) nobody needs to
15. 15.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) True (b) False
16. 16.True or false: turmeric powder is needed for growing salt crystals. (a) False (b) True
17. 17.⚖️ 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) the kind of salt (c) the same dish (d) sunny or shady place
18. 18.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it turns sweet (c) few or no crystals (d) it fizzes
19. 19.🔍 Which is the odd one out? (a) sand (b) glucose powder (c) table salt (d) baking soda
20. 20.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) melting ice (c) browning lemon ink (d) baking a cake
21. 21.⚖️ 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 keep it the same (b) we change it (c) we measure it
22. 22.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a magnet (c) a spoon (d) warm water
23. 23.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) warm water (d) turmeric powder
24. 24.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
25. 25.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
26. 26.🧂 Which of these does not dissolve in water? (a) sugar (b) food colour (c) glucose powder (d) sand
27. 27.🔍 Which is the odd one out? (a) glucose powder (b) cooking oil (c) sugar (d) baking soda
28. 28.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) dissolving salt (c) melting butter (d) baking a cake
29. 29.🔍 Which is the odd one out? (a) cooking oil (b) small pebbles (c) chalk powder (d) food colour
30. 30.True or false: freezing water is a change that can be undone. (a) True (b) False
31. 31.True or false: salt is needed for growing salt crystals. (a) True (b) False
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) a shallow dish (c) a spoon (d) a piece of string
33. 33.True or false: baking soda dissolves in water. (a) False (b) True
34. 34.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) magnetic (c) frozen (d) empty
35. 35.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
36. 36.True or false: browning lemon ink is a change that can be undone. (a) True (b) False
37. 37.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
38. 38.🧈 Which of these is a change that can be undone? (a) rusting iron (b) milk turning to curd (c) freezing water (d) browning lemon ink
39. 39.True or false: chalk powder dissolves in water. (a) True (b) False
40. 40.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) False (b) True

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