Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 221 · 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.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a piece of string (c) a mirror (d) salt
2. 2.True or false: salt is not needed for growing salt crystals. (a) True (b) False
3. 3.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
4. 4.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
5. 5.True or false: small pebbles does not dissolve in water. (a) False (b) True
6. 6.⚖️ 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 kind of salt (b) the same dish (c) sunny or shady place (d) days to see crystals
7. 7.⚖️ 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
8. 8.🔮 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
9. 9.True or false: sand dissolves in water. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) sawdust (b) baking soda (c) sand (d) cooking oil
11. 11.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
12. 12.🔍 Which is the odd one out? (a) glucose powder (b) sawdust (c) food colour (d) sugar
13. 13.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) next to the baby (c) on the edge of a table (d) safe from small children
14. 14.🔮 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
15. 15.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) True (b) False
16. 16.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
17. 17.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
18. 18.True or false: melting ice is a change that can be undone. (a) False (b) True
19. 19.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
20. 20.True or false: small pebbles dissolves in water. (a) False (b) True
21. 21.⚖️ 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 change it (b) we measure it (c) we keep it the same
22. 22.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
23. 23.🧺 Which of these is needed for growing salt crystals? (a) a shallow dish (b) a magnet (c) yeast (d) turmeric powder
24. 24.⚖️ 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 keep it the same (c) we measure it
25. 25.🔍 Which is the odd one out? (a) sand (b) glucose powder (c) small pebbles (d) cooking oil
26. 26.True or false: chalk powder dissolves in water. (a) True (b) False
27. 27.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
28. 28.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
29. 29.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a piece of string (d) a battery cell
30. 30.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is the one thing we change. (a) True (b) False
31. 31.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is the one thing we change. (a) True (b) False
32. 32.🧂 Which of these does not dissolve in water? (a) sugar (b) chalk powder (c) baking soda (d) food colour
33. 33.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
34. 34.⚖️ 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
35. 35.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is what we measure. (a) True (b) False
36. 36.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) a shallow dish (c) warm water (d) a piece of string
37. 37.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) warm water (d) a mirror
38. 38.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
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 water”? (a) we measure it (b) we change it (c) we keep it the same
40. 40.True or false: baking a cake is a change that can be undone. (a) False (b) True

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