Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 913 · 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 what we measure? (a) sunny or shady place (b) the amount of water (c) the amount of salt (d) days to see crystals
2. 2.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) glucose powder (d) sawdust
3. 3.⚖️ 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 kind of salt
4. 4.True or false: baking a cake is a change that can be undone. (a) False (b) True
5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a magnet (c) salt (d) warm water
6. 6.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) crystals grow faster (c) it turns sweet (d) few or no crystals
7. 7.🧈 Which of these is a change that cannot be undone? (a) baking a cake (b) freezing water (c) dissolving salt (d) folding paper
8. 8.True or false: sawdust does not dissolve in water. (a) False (b) True
9. 9.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a balloon (c) a battery cell (d) warm water
10. 10.⚖️ 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
11. 11.🧂 Why do we stir in salt until no more will dissolve? (a) to cool the water (b) to make it very salty (c) to change its colour (d) to make it fizz
12. 12.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
13. 13.🔍 Which is the odd one out? (a) baking soda (b) chalk powder (c) sugar (d) table salt
14. 14.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
15. 15.⚖️ 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 measure it (c) we keep it the same
16. 16.⚖️ 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) True (b) False
17. 17.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) folding paper (c) baking a cake (d) rusting iron
18. 18.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a balloon (c) a magnet (d) a shallow dish
19. 19.True or false: salt is needed for growing salt crystals. (a) True (b) False
20. 20.⚖️ 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) days to see crystals (b) the same dish (c) the kind of salt (d) sunny or shady place
21. 21.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) in a busy doorway (c) next to the baby (d) on the edge of a table
22. 22.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a piece of string (c) yeast (d) turmeric powder
23. 23.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
24. 24.🧂 Which of these dissolves in water? (a) sawdust (b) cooking oil (c) sand (d) food colour
25. 25.True or false: sand does not dissolve in water. (a) True (b) False
26. 26.🧂 Which of these does not dissolve in water? (a) glucose powder (b) table salt (c) chalk powder (d) baking soda
27. 27.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) salt eats water (c) water evaporates (d) the dish melts
28. 28.⚖️ 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) True (b) False
29. 29.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
30. 30.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny triangles (c) tiny spheres (d) tiny cubes
31. 31.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
32. 32.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
33. 33.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
34. 34.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is what we measure. (a) False (b) True
35. 35.🧂 Which of these dissolves in water? (a) cooking oil (b) sand (c) sawdust (d) table salt
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) True (b) False
37. 37.🔍 Which is the odd one out? (a) sugar (b) sand (c) food colour (d) table salt
38. 38.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) nobody needs to (c) a grown-up (d) the youngest child
39. 39.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) days to see crystals (b) sunny or shady place (c) the amount of water
40. 40.🧂 Which of these dissolves in water? (a) glucose powder (b) sand (c) sawdust (d) small pebbles

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