Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 578 · 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.⚖️ 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
2. 2.🧂 Which of these dissolves in water? (a) small pebbles (b) food colour (c) sawdust (d) cooking oil
3. 3.⚖️ 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 change it (b) we measure it (c) we keep it the same
4. 4.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
5. 5.⚖️ 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
6. 6.🔍 Which is the odd one out? (a) food colour (b) sugar (c) small pebbles (d) glucose powder
7. 7.⚖️ 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 change it (c) we keep it the same
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) a battery cell (d) a shallow dish
9. 9.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) a magnet (c) yeast (d) a battery cell
10. 10.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) milk turning to curd (c) melting butter (d) dissolving salt
11. 11.True or false: melting butter is a change that can be undone. (a) False (b) True
12. 12.🛟 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
13. 13.🔍 Which is the odd one out? (a) glucose powder (b) sand (c) chalk powder (d) cooking oil
14. 14.True or false: rusting iron is a change that can be undone. (a) False (b) True
15. 15.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt eats water (c) water evaporates (d) salt grows roots
16. 16.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting butter (c) melting ice (d) cooking an egg
17. 17.⚖️ 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
18. 18.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
19. 19.True or false: melting butter is a change that cannot be undone. (a) False (b) True
20. 20.⚖️ 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 measure it (b) we change it (c) we keep it the same
21. 21.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny spheres (c) tiny triangles (d) tiny stars
22. 22.🔍 Which is the odd one out? (a) table salt (b) baking soda (c) chalk powder (d) sugar
23. 23.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a balloon (c) a shallow dish (d) warm water
25. 25.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) melting ice (c) cooking an egg (d) rusting iron
26. 26.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a piece of string (c) a balloon (d) yeast
27. 27.True or false: table salt dissolves in water. (a) False (b) True
28. 28.True or false: baking soda does not dissolve in water. (a) False (b) True
29. 29.🧺 Do we need a shallow dish 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) salt (b) a magnet (c) a piece of string (d) warm water
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 the one thing we change. (a) False (b) True
32. 32.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
33. 33.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) a battery cell (c) a mirror (d) a magnet
34. 34.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) turmeric powder (c) warm water (d) salt
35. 35.🔍 Which is the odd one out? (a) sugar (b) small pebbles (c) sawdust (d) sand
36. 36.🔍 Which is the odd one out? (a) sand (b) food colour (c) chalk powder (d) cooking oil
37. 37.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
38. 38.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) no crystals (c) liquid crystals (d) smaller crystals
39. 39.⚖️ 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 kind of salt (b) sunny or shady place (c) days to see crystals (d) the amount of salt
40. 40.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water

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