Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 410 · 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? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) sea water evaporates (c) salt rains down (d) sand is ground up
3. 3.True or false: food colour dissolves in water. (a) True (b) False
4. 4.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
5. 5.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
6. 6.⚖️ 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
7. 7.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) next to the baby (c) in a busy doorway (d) on the edge of a table
8. 8.⚖️ 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 change it (b) we keep it the same (c) we measure it
9. 9.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
10. 10.🔍 Which is the odd one out? (a) sawdust (b) small pebbles (c) glucose powder (d) chalk powder
11. 11.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
12. 12.🔍 Which is the odd one out? (a) table salt (b) small pebbles (c) sawdust (d) chalk powder
13. 13.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) a magnet (d) a shallow dish
14. 14.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) warm water (c) yeast (d) a spoon
15. 15.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
16. 16.True or false: cooking an egg is a change that cannot be undone. (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) sunny or shady place (b) the same dish (c) days to see crystals (d) the kind of salt
18. 18.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
19. 19.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) a battery cell (c) a magnet (d) yeast
20. 20.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is what we measure. (a) True (b) False
21. 21.🧂 Which of these does not dissolve in water? (a) sawdust (b) baking soda (c) table salt (d) sugar
22. 22.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
23. 23.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt grows roots (c) salt eats water (d) water evaporates
24. 24.🔍 Which is the odd one out? (a) glucose powder (b) baking soda (c) small pebbles (d) food colour
25. 25.⚖️ 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 change it (c) we keep it the same
26. 26.🧺 Which of these is not needed for growing salt crystals? (a) a balloon (b) warm water (c) a piece of string (d) salt
27. 27.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
28. 28.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
29. 29.True or false: baking a cake is a change that cannot be undone. (a) True (b) False
30. 30.⚖️ 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 keep it the same (c) we change it
31. 31.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
32. 32.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to oil (c) it turns to butter (d) sugar crystals form
33. 33.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
34. 34.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) a spoon (d) yeast
35. 35.True or false: freezing water is a change that can be undone. (a) True (b) False
36. 36.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) sunny or shady place (b) days to see crystals (c) the same dish (d) the kind of salt
37. 37.True or false: baking soda does not dissolve in water. (a) False (b) True
38. 38.⚖️ 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
39. 39.True or false: a magnet is not needed for growing salt crystals. (a) False (b) True
40. 40.True or false: turmeric powder is needed for growing salt crystals. (a) False (b) True

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