Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 357 · 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.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
2. 2.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
3. 3.⚖️ 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 measure it (b) we keep it the same (c) we change it
4. 4.🔍 Which is the odd one out? (a) sand (b) sawdust (c) glucose powder (d) small pebbles
5. 5.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
6. 6.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting butter (c) baking a cake (d) folding paper
7. 7.True or false: a battery cell is needed for growing salt crystals. (a) False (b) True
8. 8.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) yeast (c) a balloon (d) turmeric powder
9. 9.True or false: rusting iron is a change that can be undone. (a) True (b) False
10. 10.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
11. 11.True or false: yeast is needed for growing salt crystals. (a) True (b) False
12. 12.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
13. 13.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a piece of string (c) a battery cell (d) salt
14. 14.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny triangles (c) tiny spheres (d) tiny stars
15. 15.🧺 Which of these is not needed for growing salt crystals? (a) turmeric powder (b) a spoon (c) a shallow dish (d) salt
16. 16.True or false: table salt does not dissolve in water. (a) True (b) False
17. 17.🧂 Which of these dissolves in water? (a) baking soda (b) cooking oil (c) chalk powder (d) sand
18. 18.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.⚖️ 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 keep it the same (b) we measure it (c) we change it
20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a battery cell (d) a piece of string
21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a mirror (c) a spoon (d) salt
22. 22.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) warm water (c) a piece of string (d) a spoon
23. 23.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
24. 24.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
25. 25.True or false: small pebbles dissolves in water. (a) True (b) False
26. 26.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) browning lemon ink (c) baking a cake (d) melting ice
27. 27.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) next to the baby (c) safe from small children (d) in a busy doorway
28. 28.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is the one thing we change. (a) True (b) False
29. 29.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
30. 30.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
31. 31.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) fish make it (c) salt rains down (d) sea water evaporates
32. 32.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) sunny or shady place (b) days to see crystals (c) the amount of salt
33. 33.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a piece of string (c) a battery cell (d) a mirror
34. 34.🧂 Which of these does not dissolve in water? (a) sugar (b) food colour (c) small pebbles (d) table salt
35. 35.⚖️ 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
36. 36.⚖️ 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) False (b) True
37. 37.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) False (b) True
38. 38.⚖️ 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
39. 39.True or false: sawdust dissolves in water. (a) True (b) False
40. 40.True or false: freezing water is a change that can be undone. (a) True (b) False

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