Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 346 · 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.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) warm water (c) a magnet (d) salt
2. 2.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a balloon (c) a shallow dish (d) a spoon
4. 4.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
5. 5.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) no crystals (c) smaller crystals (d) bigger crystals
6. 6.⚖️ 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) False (b) True
7. 7.True or false: glucose powder dissolves in water. (a) False (b) True
8. 8.🧂 Which of these dissolves in water? (a) cooking oil (b) sand (c) chalk powder (d) food colour
9. 9.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) salt (c) a spoon (d) yeast
10. 10.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
11. 11.True or false: table salt does not dissolve in water. (a) True (b) False
12. 12.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
13. 13.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a piece of string (d) yeast
14. 14.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False
15. 15.⚖️ 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 change it (b) we keep it the same (c) we measure it
16. 16.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
17. 17.🧂 Why do crystals appear as the dish dries? (a) water evaporates (b) salt grows roots (c) the dish melts (d) salt eats water
18. 18.🔍 Which is the odd one out? (a) sugar (b) food colour (c) table salt (d) small pebbles
19. 19.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) False (b) True
20. 20.🧂 Which of these dissolves in water? (a) sawdust (b) sugar (c) cooking oil (d) small pebbles
21. 21.🛟 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
22. 22.⚖️ 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 keep it the same (b) we measure it (c) we change it
23. 23.⚖️ 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 kind of salt (b) the amount of water (c) the same dish (d) days to see crystals
24. 24.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny spheres (c) tiny cubes (d) tiny stars
25. 25.⚖️ 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 amount of water (b) sunny or shady place (c) days to see crystals
26. 26.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a balloon (c) yeast (d) a shallow dish
27. 27.⚖️ 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) False (b) True
28. 28.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a spoon (c) turmeric powder (d) a balloon
29. 29.True or false: sugar dissolves in water. (a) False (b) True
30. 30.True or false: cooking an egg is a change that can be undone. (a) True (b) False
31. 31.⚖️ 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 measure it (c) we keep it the same
32. 32.True or false: baking a cake is a change that cannot be undone. (a) False (b) True
33. 33.⚖️ 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
34. 34.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
35. 35.⚖️ 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) False (b) True
36. 36.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) it turns sweet (c) crystals grow faster (d) few or no crystals
37. 37.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a mirror (c) a piece of string (d) yeast
38. 38.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) a magnet (c) a balloon (d) a mirror
39. 39.True or false: cooking oil does not dissolve in water. (a) True (b) False
40. 40.True or false: small pebbles does not dissolve in water. (a) True (b) False

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