Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 64 · 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) the same dish (b) the amount of water (c) days to see crystals (d) the kind of salt
2. 2.⚖️ 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 measure it (c) we keep it the same
3. 3.🧺 Do we need a battery cell 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 kept the same? (a) sunny or shady place (b) the same dish (c) days to see crystals
5. 5.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
6. 6.🧂 Which of these does not dissolve in water? (a) sugar (b) glucose powder (c) cooking oil (d) baking soda
7. 7.True or false: a shallow dish is needed for growing salt crystals. (a) False (b) True
8. 8.⚖️ 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
9. 9.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a spoon (d) a mirror
10. 10.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) rusting iron (c) baking a cake (d) melting butter
11. 11.True or false: glucose powder dissolves in water. (a) False (b) True
12. 12.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) warm water (c) turmeric powder (d) a piece of string
13. 13.True or false: salt is not needed for growing salt crystals. (a) True (b) False
14. 14.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
15. 15.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) True (b) False
16. 16.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) turmeric powder (c) a piece of string (d) a mirror
17. 17.⚖️ 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) False (b) True
18. 18.⚖️ 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) False (b) True
19. 19.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) warm water (c) salt (d) a piece of string
20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) a spoon (c) warm water (d) a piece of string
21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a piece of string (c) salt (d) yeast
22. 22.🧂 Which of these dissolves in water? (a) glucose powder (b) sand (c) cooking oil (d) sawdust
23. 23.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a magnet (c) salt (d) a mirror
24. 24.⚖️ 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 keep it the same (c) we change it
25. 25.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
26. 26.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
27. 27.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny stars (c) tiny triangles (d) tiny spheres
28. 28.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) empty (c) saturated (d) magnetic
29. 29.🔍 Which is the odd one out? (a) sand (b) glucose powder (c) sugar (d) table salt
30. 30.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
31. 31.🧂 Which of these does not dissolve in water? (a) small pebbles (b) glucose powder (c) baking soda (d) table salt
32. 32.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) safe from small children (c) on the edge of a table (d) next to the baby
33. 33.⚖️ 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 keep it the same (b) we measure it (c) we change it
34. 34.🧂 Which of these does not dissolve in water? (a) sugar (b) sawdust (c) baking soda (d) food colour
35. 35.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
36. 36.True or false: cooking an egg is a change that can be undone. (a) True (b) False
37. 37.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) the dish melts (c) water evaporates (d) salt eats water
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a magnet (c) a shallow dish (d) warm water
39. 39.🧂 Which of these dissolves in water? (a) cooking oil (b) small pebbles (c) sawdust (d) food colour
40. 40.⚖️ 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

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