Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 906 · 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.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
2. 2.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) yeast (c) a spoon (d) turmeric powder
3. 3.True or false: warm water is needed for growing salt crystals. (a) False (b) True
4. 4.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) in a busy doorway (c) on the edge of a table (d) safe from small children
5. 5.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny spheres (c) tiny cubes (d) tiny stars
6. 6.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
7. 7.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a shallow dish (c) a magnet (d) yeast
8. 8.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
9. 9.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
10. 10.🧂 Which of these does not dissolve in water? (a) baking soda (b) sugar (c) table salt (d) sawdust
11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) True (b) False
12. 12.True or false: sand does not dissolve in water. (a) False (b) True
13. 13.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) it fizzes (c) few or no crystals (d) crystals grow faster
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) sunny or shady place (b) the same dish (c) the amount of salt (d) the kind of salt
15. 15.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) warm water (c) salt (d) a shallow dish
16. 16.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) yeast (c) a mirror (d) a battery cell
17. 17.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
18. 18.🧂 Which of these dissolves in water? (a) small pebbles (b) sugar (c) sand (d) cooking oil
19. 19.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is what we measure. (a) True (b) False
20. 20.🧂 Why do we stir in salt until no more will dissolve? (a) to make it fizz (b) to change its colour (c) to cool the water (d) to make it very salty
21. 21.🔍 Which is the odd one out? (a) sugar (b) glucose powder (c) chalk powder (d) food colour
22. 22.🧺 Which of these is not needed for growing salt crystals? (a) a battery cell (b) a piece of string (c) salt (d) a shallow dish
23. 23.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
24. 24.True or false: sugar dissolves in water. (a) False (b) True
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a mirror (c) warm water (d) a spoon
26. 26.True or false: cooking oil dissolves in water. (a) False (b) True
27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) a magnet (d) a piece of string
28. 28.🧂 Which of these does not dissolve in water? (a) small pebbles (b) food colour (c) sugar (d) table salt
29. 29.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) saturated (c) magnetic (d) empty
30. 30.🧂 Which of these dissolves in water? (a) chalk powder (b) sawdust (c) glucose powder (d) small pebbles
31. 31.⚖️ 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 same dish (c) sunny or shady place
32. 32.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) rusting iron (c) folding paper (d) melting butter
33. 33.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
34. 34.True or false: baking a cake is a change that cannot be undone. (a) True (b) False
35. 35.⚖️ 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 keep it the same (c) we measure it
36. 36.🧈 Which of these is a change that can be undone? (a) freezing water (b) milk turning to curd (c) browning lemon ink (d) cooking an egg
37. 37.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
38. 38.🔍 Which is the odd one out? (a) sugar (b) sand (c) baking soda (d) glucose powder
39. 39.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) water evaporates (c) salt eats water (d) salt grows roots
40. 40.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone

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