Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 165 · 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) salt (b) a spoon (c) a battery cell (d) a piece of string
2. 2.True or false: salt is not needed for growing salt crystals. (a) False (b) True
3. 3.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) warm water (c) a balloon (d) salt
4. 4.True or false: warm water is not needed for growing salt crystals. (a) False (b) True
5. 5.🧈 Which of these is a change that can be undone? (a) baking a cake (b) milk turning to curd (c) browning lemon ink (d) freezing water
6. 6.⚖️ 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
7. 7.🧂 Which of these does not dissolve in water? (a) food colour (b) sugar (c) baking soda (d) cooking oil
8. 8.⚖️ 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
9. 9.True or false: baking soda does not dissolve in water. (a) True (b) False
10. 10.🔮 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
11. 11.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a mirror (d) a piece of string
12. 12.True or false: a battery cell is needed for growing salt crystals. (a) False (b) True
13. 13.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
14. 14.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
15. 15.⚖️ 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) the amount of water (c) days to see crystals (d) the amount of salt
16. 16.True or false: cooking an egg is a change that can be undone. (a) False (b) True
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a shallow dish (c) a balloon (d) warm water
18. 18.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
19. 19.🧂 Which of these dissolves in water? (a) chalk powder (b) food colour (c) sawdust (d) small pebbles
20. 20.True or false: chalk powder dissolves in water. (a) True (b) False
21. 21.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a magnet (c) a shallow dish (d) a battery cell
22. 22.🌊 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
23. 23.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is what we measure. (a) False (b) True
24. 24.⚖️ 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 amount of salt (b) days to see crystals (c) sunny or shady place (d) the amount of water
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 keep it the same (b) we measure it (c) we change it
26. 26.⚖️ 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 keep it the same (b) we change it (c) we measure it
27. 27.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
28. 28.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) crystals grow faster (c) it fizzes (d) it turns sweet
29. 29.True or false: salt is needed for growing salt crystals. (a) True (b) False
30. 30.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) safe from small children (c) in a busy doorway (d) on the edge of a table
31. 31.True or false: a magnet is not needed for growing salt crystals. (a) False (b) True
32. 32.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
33. 33.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
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 what we measure. (a) False (b) True
35. 35.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
36. 36.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) turmeric powder (c) a magnet (d) yeast
37. 37.⚖️ 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 same dish
38. 38.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
39. 39.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
40. 40.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny stars (c) tiny triangles (d) tiny spheres

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