Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 239 · 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.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
2. 2.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) empty (c) frozen (d) magnetic
3. 3.⚖️ 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
4. 4.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) a magnet (c) a battery cell (d) a mirror
5. 5.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False
6. 6.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a magnet (c) warm water (d) a balloon
7. 7.⚖️ 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
8. 8.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
9. 9.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
10. 10.🧂 Why do we stir in salt until no more will dissolve? (a) to change its colour (b) to make it very salty (c) to cool the water (d) to make it fizz
11. 11.True or false: milk turning to curd is a change that cannot be undone. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) sugar (b) sand (c) small pebbles (d) sawdust
13. 13.⚖️ 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 change it (c) we measure it
14. 14.True or false: folding paper is a change that cannot be undone. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) sand (b) food colour (c) cooking oil (d) chalk powder
16. 16.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
17. 17.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny spheres (c) tiny stars (d) tiny cubes
18. 18.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
19. 19.⚖️ 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) the amount of water (c) sunny or shady place
20. 20.True or false: small pebbles does not dissolve in water. (a) True (b) False
21. 21.True or false: sugar dissolves in water. (a) True (b) False
22. 22.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
23. 23.⚖️ 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 change it (b) we keep it the same (c) we measure it
24. 24.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
25. 25.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the amount of salt (b) the same dish (c) days to see crystals (d) sunny or shady place
26. 26.⚖️ 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 same dish
27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) warm water (d) yeast
28. 28.⚖️ 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 amount of salt (b) days to see crystals (c) sunny or shady place (d) the kind of salt
29. 29.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
30. 30.True or false: freezing water is a change that can be undone. (a) True (b) False
31. 31.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) baking soda (b) chalk powder (c) sugar (d) food colour
33. 33.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) next to the baby (c) in a busy doorway (d) safe from small children
34. 34.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the kind of salt (b) days to see crystals (c) sunny or shady place
35. 35.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) browning lemon ink (c) rusting iron (d) melting butter
36. 36.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
37. 37.⚖️ 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 keep it the same (b) we measure it (c) we change it
38. 38.True or false: a shallow dish is needed for growing salt crystals. (a) False (b) True
39. 39.🧈 Which of these is a change that can be undone? (a) melting ice (b) milk turning to curd (c) browning lemon ink (d) baking a cake
40. 40.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone

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