Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 300 · 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? True or false: days to see crystals is what we measure. (a) False (b) True
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) turmeric powder (d) a spoon
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a magnet (c) salt (d) warm water
4. 4.True or false: a battery cell is needed for growing salt crystals. (a) False (b) True
5. 5.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) it turns to butter (c) salt crystals form (d) sugar crystals form
6. 6.True or false: melting ice is a change that can be undone. (a) False (b) True
7. 7.True or false: baking soda does not dissolve in water. (a) True (b) False
8. 8.🧂 Which of these dissolves in water? (a) chalk powder (b) cooking oil (c) sawdust (d) glucose powder
9. 9.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny cubes (c) tiny triangles (d) tiny stars
10. 10.🧂 Which of these dissolves in water? (a) small pebbles (b) sand (c) sawdust (d) sugar
11. 11.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
12. 12.⚖️ 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 measure it (b) we keep it the same (c) we change it
13. 13.True or false: baking a cake is a change that can be undone. (a) True (b) False
14. 14.🧂 Which of these does not dissolve in water? (a) food colour (b) sand (c) glucose powder (d) table salt
15. 15.True or false: warm water is not needed for growing salt crystals. (a) False (b) True
16. 16.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) salt (c) a piece of string (d) turmeric powder
17. 17.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
18. 18.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) True (b) False
19. 19.⚖️ 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 keep it the same (c) we measure it
20. 20.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) False (b) True
21. 21.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
22. 22.⚖️ 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 keep it the same (b) we measure it (c) we change it
23. 23.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
24. 24.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
25. 25.True or false: a magnet is needed for growing salt crystals. (a) False (b) True
26. 26.True or false: food colour dissolves in water. (a) False (b) True
27. 27.⚖️ 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) sunny or shady place (c) days to see crystals
28. 28.⚖️ 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 change it (c) we keep it the same
29. 29.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a shallow dish (d) a mirror
30. 30.True or false: chalk powder dissolves in water. (a) False (b) True
31. 31.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a piece of string (c) warm water (d) a battery cell
32. 32.🧂 Why do we stir in salt until no more will dissolve? (a) to cool the water (b) to make it fizz (c) to make it very salty (d) to change its colour
33. 33.⚖️ 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 same dish (b) days to see crystals (c) sunny or shady place
34. 34.⚖️ 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
35. 35.⚖️ 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 measure it (b) we change it (c) we keep it the same
36. 36.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
37. 37.⚖️ 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 same dish (c) the amount of water (d) sunny or shady place
38. 38.🧈 Which of these is a change that can be undone? (a) baking a cake (b) melting butter (c) milk turning to curd (d) rusting iron
39. 39.True or false: turmeric powder is not needed for growing salt crystals. (a) False (b) True
40. 40.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed

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