Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 571 · 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 triangles (d) tiny cubes
2. 2.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
3. 3.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) empty (c) saturated (d) frozen
4. 4.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) smaller crystals (c) liquid crystals (d) bigger crystals
5. 5.True or false: salt is needed for growing salt crystals. (a) False (b) True
6. 6.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
7. 7.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) a battery cell (c) a mirror (d) yeast
8. 8.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) yeast (c) a spoon (d) salt
9. 9.🔍 Which is the odd one out? (a) sand (b) baking soda (c) food colour (d) glucose powder
10. 10.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
11. 11.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
12. 12.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
13. 13.True or false: a magnet is not needed for growing salt crystals. (a) True (b) False
14. 14.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
15. 15.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
16. 16.True or false: milk turning to curd is a change that can be undone. (a) False (b) True
17. 17.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
18. 18.🔍 Which is the odd one out? (a) table salt (b) baking soda (c) sugar (d) sawdust
19. 19.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) turmeric powder (c) salt (d) a spoon
20. 20.🧂 Which of these dissolves in water? (a) small pebbles (b) cooking oil (c) sugar (d) sand
21. 21.⚖️ 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) True (b) False
22. 22.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False
23. 23.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) few or no crystals (c) it fizzes (d) crystals grow faster
24. 24.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) warm water (c) salt (d) a mirror
26. 26.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
27. 27.True or false: cooking oil dissolves in water. (a) False (b) True
28. 28.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a balloon (c) a piece of string (d) a spoon
29. 29.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
30. 30.True or false: turmeric powder is not needed for growing salt crystals. (a) False (b) True
31. 31.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a piece of string (c) a mirror (d) yeast
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 keep it the same (b) we change it (c) we measure it
33. 33.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
34. 34.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
35. 35.True or false: a magnet is needed for growing salt crystals. (a) False (b) True
36. 36.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
37. 37.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) it turns to butter (c) sugar crystals form (d) salt crystals form
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a magnet (d) a spoon
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 salt”? (a) we change it (b) we measure it (c) we keep it the same
40. 40.🧂 Why do we stir in salt until no more will dissolve? (a) to change its colour (b) to cool the water (c) to make it very salty (d) to make it fizz

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