Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 327 · 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.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
2. 2.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
3. 3.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting ice (c) freezing water (d) cooking an egg
4. 4.🧂 Which of these does not dissolve in water? (a) cooking oil (b) sugar (c) table salt (d) glucose powder
5. 5.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) salt crystals form (c) it turns to oil (d) it turns to butter
6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) turmeric powder (d) a piece of string
7. 7.🧂 Which of these dissolves in water? (a) sawdust (b) food colour (c) cooking oil (d) small pebbles
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) a battery cell (d) warm water
9. 9.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a mirror (c) a piece of string (d) warm water
10. 10.True or false: cooking an egg is a change that cannot be undone. (a) False (b) True
11. 11.True or false: a balloon is needed for growing salt crystals. (a) False (b) True
12. 12.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) yeast (c) warm water (d) a mirror
13. 13.True or false: a mirror is needed for growing salt crystals. (a) False (b) True
14. 14.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False
15. 15.🔍 Which is the odd one out? (a) baking soda (b) chalk powder (c) small pebbles (d) sand
16. 16.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
17. 17.⚖️ 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 keep it the same (b) we measure it (c) we change it
18. 18.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a piece of string (c) a balloon (d) a spoon
19. 19.🧂 Which of these dissolves in water? (a) baking soda (b) sawdust (c) chalk powder (d) sand
20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) a piece of string (d) a magnet
21. 21.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
22. 22.True or false: sand dissolves in water. (a) True (b) False
23. 23.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
24. 24.True or false: a piece of string is needed for growing salt crystals. (a) False (b) True
25. 25.🧂 Which of these dissolves in water? (a) chalk powder (b) sugar (c) sawdust (d) cooking oil
26. 26.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) turmeric powder (c) a spoon (d) warm water
27. 27.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) sand is ground up (c) fish make it (d) sea water evaporates
28. 28.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
29. 29.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
30. 30.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) a piece of string (c) salt (d) warm water
31. 31.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) few or no crystals (c) it turns sweet (d) crystals grow faster
32. 32.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we measure it (b) we change it (c) we keep it the same
34. 34.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) in a busy doorway (c) on the edge of a table (d) next to the baby
35. 35.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
36. 36.⚖️ 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 keep it the same (c) we measure it
37. 37.🧺 Which of these is not needed for growing salt crystals? (a) a balloon (b) a spoon (c) salt (d) warm water
38. 38.⚖️ 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) the amount of salt (c) days to see crystals
39. 39.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
40. 40.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny triangles (c) tiny spheres (d) tiny cubes

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