Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 614 · 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? What do we do with “the kind of salt”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
3. 3.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a piece of string (c) warm water (d) a magnet
4. 4.🧈 Which of these is a change that cannot be undone? (a) rusting iron (b) freezing water (c) folding paper (d) melting butter
5. 5.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) salt (c) a balloon (d) a piece of string
6. 6.🛟 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
7. 7.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) water evaporates (c) salt eats water (d) the dish melts
8. 8.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
9. 9.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a spoon (c) salt (d) a battery cell
10. 10.⚖️ 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
11. 11.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
12. 12.🔍 Which is the odd one out? (a) cooking oil (b) sand (c) small pebbles (d) glucose powder
13. 13.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
14. 14.True or false: browning lemon ink is a change that can be undone. (a) True (b) False
15. 15.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
16. 16.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) fish make it (c) sea water evaporates (d) salt rains down
17. 17.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a balloon (c) turmeric powder (d) a spoon
18. 18.⚖️ 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
19. 19.⚖️ 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
20. 20.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
21. 21.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a balloon (c) turmeric powder (d) warm water
22. 22.🔍 Which is the odd one out? (a) sugar (b) baking soda (c) sawdust (d) glucose powder
23. 23.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
24. 24.True or false: baking soda dissolves in water. (a) True (b) False
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) a piece of string (c) salt (d) warm water
26. 26.⚖️ 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
27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is the one thing we change. (a) True (b) False
28. 28.🧺 Which of these is not needed for growing salt crystals? (a) a mirror (b) warm water (c) a piece of string (d) a shallow dish
29. 29.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
30. 30.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
31. 31.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny stars (c) tiny spheres (d) tiny triangles
32. 32.🧂 Which of these dissolves in water? (a) sawdust (b) cooking oil (c) chalk powder (d) table salt
33. 33.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) a mirror (c) a battery cell (d) a magnet
34. 34.⚖️ 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) False (b) True
35. 35.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
36. 36.⚖️ 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 salt
37. 37.True or false: sand dissolves in water. (a) True (b) False
38. 38.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
39. 39.True or false: cooking an egg is a change that cannot be undone. (a) False (b) True
40. 40.🧂 Which of these dissolves in water? (a) sand (b) small pebbles (c) chalk powder (d) sugar

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