Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 772 · 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 salt (c) the amount of water (d) days to see crystals
2. 2.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
3. 3.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
4. 4.⚖️ 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 kind of salt (c) the amount of salt (d) sunny or shady place
5. 5.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) on the edge of a table (c) next to the baby (d) in a busy doorway
6. 6.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) dissolving salt (c) browning lemon ink (d) melting butter
7. 7.True or false: melting ice is a change that cannot be undone. (a) False (b) True
8. 8.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
9. 9.True or false: browning lemon ink is a change that can be undone. (a) True (b) False
10. 10.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a spoon (d) turmeric powder
11. 11.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) melting ice (c) dissolving salt (d) rusting iron
12. 12.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a spoon (c) a magnet (d) salt
13. 13.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) a piece of string (d) a magnet
14. 14.⚖️ 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
15. 15.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
16. 16.True or false: a piece of string is needed for growing salt crystals. (a) False (b) True
17. 17.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) True (b) False
18. 18.⚖️ 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
19. 19.⚖️ 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 measure it (c) we keep it the same
20. 20.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) crystals grow faster (c) it fizzes (d) few or no crystals
21. 21.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
22. 22.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
23. 23.True or false: folding paper is a change that can be undone. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) chalk powder (b) glucose powder (c) small pebbles (d) sand
25. 25.🧂 Which of these does not dissolve in water? (a) glucose powder (b) sawdust (c) table salt (d) sugar
26. 26.True or false: salt is needed for growing salt crystals. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) food colour (b) chalk powder (c) sand (d) cooking oil
28. 28.🔍 Which is the odd one out? (a) sawdust (b) sand (c) baking soda (d) chalk powder
29. 29.⚖️ 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 keep it the same (c) we measure it
30. 30.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny cubes (c) tiny spheres (d) tiny stars
31. 31.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
32. 32.🧈 Which of these is a change that can be undone? (a) rusting iron (b) melting butter (c) browning lemon ink (d) baking a cake
33. 33.🔍 Which is the odd one out? (a) sugar (b) sawdust (c) small pebbles (d) cooking oil
34. 34.⚖️ 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 keep it the same (b) we change it (c) we measure it
35. 35.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
36. 36.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a balloon (c) a spoon (d) a mirror
37. 37.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) salt crystals form (c) it turns to oil (d) sugar crystals form
38. 38.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
39. 39.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
40. 40.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed

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