Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 115 · 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: glucose powder does not dissolve in water. (a) True (b) False
2. 2.🧂 Which of these dissolves in water? (a) chalk powder (b) baking soda (c) sawdust (d) sand
3. 3.True or false: cooking an egg is a change that cannot be undone. (a) False (b) True
4. 4.⚖️ 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
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.🛟 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
7. 7.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) a spoon (c) salt (d) warm water
8. 8.⚖️ 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
9. 9.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) False (b) True
10. 10.True or false: table salt does not dissolve in water. (a) True (b) False
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 what we measure. (a) True (b) False
12. 12.⚖️ 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 same dish (b) the amount of water (c) the amount of salt (d) sunny or shady place
13. 13.🧂 Which of these does not dissolve in water? (a) food colour (b) small pebbles (c) table salt (d) sugar
14. 14.🧂 Which of these does not dissolve in water? (a) sand (b) glucose powder (c) baking soda (d) table salt
15. 15.True or false: chalk powder does not dissolve in water. (a) False (b) True
16. 16.True or false: yeast is needed for growing salt crystals. (a) False (b) True
17. 17.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) salt (c) warm water (d) a spoon
18. 18.True or false: browning lemon ink is a change that can be undone. (a) True (b) False
19. 19.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) cooking an egg (c) melting ice (d) milk turning to curd
20. 20.🔍 Which is the odd one out? (a) cooking oil (b) table salt (c) sawdust (d) small pebbles
21. 21.True or false: cooking an egg is a change that can be undone. (a) True (b) False
22. 22.True or false: a balloon is needed for growing salt crystals. (a) False (b) True
23. 23.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
24. 24.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
25. 25.🧂 Which of these does not dissolve in water? (a) sawdust (b) baking soda (c) food colour (d) sugar
26. 26.⚖️ 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 change it (b) we keep it the same (c) we measure it
27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) True (b) False
28. 28.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
29. 29.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
30. 30.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) in a busy doorway (c) next to the baby (d) safe from small children
31. 31.⚖️ 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
32. 32.🧂 Which of these dissolves in water? (a) cooking oil (b) table salt (c) sand (d) small pebbles
33. 33.🔍 Which is the odd one out? (a) food colour (b) sand (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 amount of salt is the one thing we change. (a) True (b) False
35. 35.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
36. 36.⚖️ 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
37. 37.True or false: baking soda does not dissolve in water. (a) True (b) False
38. 38.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
39. 39.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) melting butter (c) browning lemon ink (d) baking a cake
40. 40.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) a spoon (d) yeast

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