Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 513 · 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.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) yeast (c) warm water (d) a shallow dish
2. 2.True or false: browning lemon ink is a change that can be undone. (a) False (b) True
3. 3.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
4. 4.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
5. 5.⚖️ 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 amount of water (c) days to see crystals (d) sunny or shady place
6. 6.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) sugar crystals form (c) it turns to oil (d) it turns to butter
7. 7.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
8. 8.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
9. 9.True or false: a balloon is needed for growing salt crystals. (a) False (b) True
10. 10.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) warm water (c) a shallow dish (d) a piece of string
11. 11.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) freezing water (c) cooking an egg (d) dissolving salt
12. 12.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) milk turning to curd (c) melting ice (d) cooking an egg
13. 13.🧂 Which of these dissolves in water? (a) sawdust (b) cooking oil (c) small pebbles (d) sugar
14. 14.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
15. 15.⚖️ 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) True (b) False
16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) salt (c) a spoon (d) a shallow dish
17. 17.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) in a busy doorway (c) on the edge of a table (d) next to the baby
18. 18.True or false: baking soda does not dissolve in water. (a) False (b) True
19. 19.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) True (b) False
20. 20.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
21. 21.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is kept the same. (a) True (b) False
22. 22.True or false: glucose powder dissolves in water. (a) False (b) True
23. 23.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) days to see crystals (b) the amount of salt (c) sunny or shady place (d) the amount of water
24. 24.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
25. 25.True or false: warm water is needed for growing salt crystals. (a) False (b) True
26. 26.True or false: folding paper is a change that can be undone. (a) False (b) True
27. 27.True or false: freezing water is a change that cannot be undone. (a) True (b) False
28. 28.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) bigger crystals (c) smaller crystals (d) liquid crystals
29. 29.🧺 Which of these is needed for growing salt crystals? (a) a shallow dish (b) yeast (c) a mirror (d) a balloon
30. 30.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) browning lemon ink (c) folding paper (d) freezing water
31. 31.True or false: small pebbles does not dissolve in water. (a) True (b) False
32. 32.🧈 Which of these is a change that can be undone? (a) rusting iron (b) cooking an egg (c) milk turning to curd (d) dissolving salt
33. 33.⚖️ 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 measure it (b) we change it (c) we keep it the same
34. 34.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt eats water (c) salt grows roots (d) water evaporates
35. 35.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a mirror (c) a spoon (d) warm water
36. 36.⚖️ 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 measure it (b) we keep it the same (c) we change it
37. 37.🧂 Which of these does not dissolve in water? (a) glucose powder (b) baking soda (c) cooking oil (d) sugar
38. 38.🧂 Which of these does not dissolve in water? (a) glucose powder (b) baking soda (c) sugar (d) small pebbles
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 measure it (b) we change it (c) we keep it the same
40. 40.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a balloon (c) salt (d) warm water

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