Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 588 · 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: sugar dissolves in water. (a) True (b) False
2. 2.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) crystals grow faster (c) it turns sweet (d) it fizzes
3. 3.⚖️ 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
4. 4.🧂 Which of these does not dissolve in water? (a) sugar (b) table salt (c) food colour (d) chalk powder
5. 5.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny triangles (c) tiny spheres (d) tiny cubes
6. 6.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
7. 7.🧈 Which of these is a change that can be undone? (a) baking a cake (b) browning lemon ink (c) melting ice (d) milk turning to curd
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) turmeric powder (c) a piece of string (d) salt
9. 9.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
10. 10.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) on the edge of a table (c) safe from small children (d) next to the baby
11. 11.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
12. 12.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) salt (c) turmeric powder (d) a piece of string
13. 13.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) milk turning to curd (c) melting ice (d) folding paper
14. 14.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
15. 15.True or false: freezing water is a change that can be undone. (a) True (b) False
16. 16.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) False (b) True
17. 17.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) turmeric powder (c) yeast (d) a magnet
18. 18.⚖️ 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 amount of salt (c) the same dish (d) days to see crystals
19. 19.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
20. 20.🧂 Which of these dissolves in water? (a) sand (b) sawdust (c) small pebbles (d) baking soda
21. 21.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a balloon (c) turmeric powder (d) a piece of string
22. 22.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a mirror (c) turmeric powder (d) warm water
23. 23.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
24. 24.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt grows roots (c) water evaporates (d) salt eats water
25. 25.True or false: folding paper is a change that can be undone. (a) False (b) True
26. 26.⚖️ 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
27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) a piece of string (c) a spoon (d) warm water
28. 28.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
29. 29.🧈 Which of these is a change that cannot be undone? (a) baking a cake (b) melting butter (c) folding paper (d) dissolving salt
30. 30.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
31. 31.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) salt (d) a mirror
32. 32.True or false: a mirror is not needed for growing salt crystals. (a) True (b) False
33. 33.🧺 Which of these is needed for growing salt crystals? (a) salt (b) a mirror (c) a magnet (d) a balloon
34. 34.🧂 Which of these dissolves in water? (a) chalk powder (b) sawdust (c) sand (d) sugar
35. 35.⚖️ 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) False (b) True
36. 36.🧂 Which of these does not dissolve in water? (a) food colour (b) sawdust (c) baking soda (d) glucose powder
37. 37.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting ice (c) melting butter (d) cooking an egg
38. 38.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
39. 39.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is what we measure. (a) True (b) False
40. 40.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed

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