Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 790 · 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.True or false: small pebbles dissolves in water. (a) False (b) True
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a balloon (c) warm water (d) salt
3. 3.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
4. 4.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
5. 5.⚖️ 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) 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 kept the same? (a) days to see crystals (b) the amount of water (c) sunny or shady place
7. 7.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) yeast (b) salt (c) a shallow dish (d) warm water
9. 9.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
10. 10.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) fish make it (c) sand is ground up (d) sea water evaporates
11. 11.🧂 Which of these dissolves in water? (a) cooking oil (b) sand (c) glucose powder (d) small pebbles
12. 12.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) yeast (c) a piece of string (d) a battery cell
13. 13.🔍 Which is the odd one out? (a) baking soda (b) sawdust (c) chalk powder (d) small pebbles
14. 14.⚖️ 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) sunny or shady place (c) the amount of salt (d) the amount of water
15. 15.🧂 Why do we stir in salt until no more will dissolve? (a) to change its colour (b) to make it fizz (c) to cool the water (d) to make it very salty
16. 16.True or false: sugar dissolves in water. (a) True (b) False
17. 17.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
18. 18.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a balloon (c) a shallow dish (d) a piece of string
19. 19.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) salt crystals form (c) sugar crystals form (d) it turns to oil
20. 20.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) crystals grow faster (c) it turns sweet (d) few or no crystals
21. 21.⚖️ 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 measure it (c) we change it
22. 22.True or false: dissolving salt is a change that can be undone. (a) False (b) True
23. 23.True or false: a balloon is not needed for growing salt crystals. (a) False (b) True
24. 24.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) sand (b) chalk powder (c) table salt (d) sawdust
26. 26.🧈 Which of these is a change that can be undone? (a) freezing water (b) baking a cake (c) cooking an egg (d) rusting iron
27. 27.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) next to the baby (c) in a busy doorway (d) safe from small children
28. 28.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
29. 29.🧂 Which of these does not dissolve in water? (a) baking soda (b) glucose powder (c) food colour (d) chalk powder
30. 30.🧂 Which of these does not dissolve in water? (a) sugar (b) glucose powder (c) sawdust (d) baking soda
31. 31.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) warm water (c) a piece of string (d) salt
32. 32.🧈 Which of these is a change that can be undone? (a) dissolving salt (b) baking a cake (c) milk turning to curd (d) rusting iron
33. 33.🔍 Which is the odd one out? (a) small pebbles (b) baking soda (c) table salt (d) glucose powder
34. 34.⚖️ 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
35. 35.🧂 Which of these dissolves in water? (a) baking soda (b) sawdust (c) small pebbles (d) sand
36. 36.⚖️ 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
37. 37.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
38. 38.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
39. 39.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) days to see crystals (b) sunny or shady place (c) the amount of salt
40. 40.⚖️ 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 keep it the same (b) we measure it (c) we change it

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