Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 848 · 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: turmeric powder is needed for growing salt crystals. (a) True (b) False
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) turmeric powder (c) salt (d) warm water
3. 3.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is kept the same. (a) False (b) True
4. 4.⚖️ 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) sunny or shady place (c) the same dish (d) the amount of water
5. 5.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
6. 6.True or false: cooking oil dissolves in water. (a) False (b) True
7. 7.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) few or no crystals (c) it turns sweet (d) it fizzes
8. 8.🧂 Which of these dissolves in water? (a) baking soda (b) small pebbles (c) chalk powder (d) sawdust
9. 9.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
10. 10.🔍 Which is the odd one out? (a) sand (b) food colour (c) cooking oil (d) chalk powder
11. 11.True or false: glucose powder does not dissolve in water. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) sand (b) chalk powder (c) baking soda (d) small pebbles
13. 13.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) browning lemon ink (c) freezing water (d) dissolving salt
14. 14.True or false: sand dissolves in water. (a) True (b) False
15. 15.True or false: baking a cake is a change that cannot be undone. (a) False (b) True
16. 16.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) salt (c) a mirror (d) a balloon
17. 17.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) on the edge of a table (c) safe from small children (d) in a busy doorway
18. 18.True or false: rusting iron is a change that cannot be undone. (a) True (b) False
19. 19.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
20. 20.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
21. 21.🧂 Which of these does not dissolve in water? (a) cooking oil (b) sugar (c) food colour (d) glucose powder
22. 22.🧂 Which of these dissolves in water? (a) glucose powder (b) sand (c) small pebbles (d) cooking oil
23. 23.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting butter (c) freezing water (d) baking a cake
24. 24.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
25. 25.🔍 Which is the odd one out? (a) sand (b) food colour (c) table salt (d) baking soda
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 what we measure. (a) False (b) True
27. 27.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny stars (c) tiny spheres (d) tiny cubes
28. 28.⚖️ 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 keep it the same (c) we change it
29. 29.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
30. 30.True or false: yeast 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 mirror (c) a piece of string (d) warm water
32. 32.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a shallow dish (c) a mirror (d) a battery cell
33. 33.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
34. 34.⚖️ 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 keep it the same (c) we change it
35. 35.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
36. 36.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
37. 37.⚖️ 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) False (b) True
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) a magnet (d) a piece of string
39. 39.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
40. 40.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed

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