Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 952 · 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.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
2. 2.🧂 Why do we stir in salt until no more will dissolve? (a) to make it very salty (b) to cool the water (c) to make it fizz (d) to change its colour
3. 3.True or false: a magnet is needed for growing salt crystals. (a) False (b) True
4. 4.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) turmeric powder (c) a shallow dish (d) a magnet
5. 5.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
6. 6.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
7. 7.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a battery cell (c) a mirror (d) salt
8. 8.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to butter (c) it turns to oil (d) salt crystals form
9. 9.🧂 Which of these dissolves in water? (a) food colour (b) cooking oil (c) sand (d) small pebbles
10. 10.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
11. 11.🧂 Which of these dissolves in water? (a) sugar (b) chalk powder (c) cooking oil (d) sawdust
12. 12.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
13. 13.⚖️ 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 change it (b) we keep it the same (c) we measure it
14. 14.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is what we measure. (a) False (b) True
15. 15.🧂 Which of these does not dissolve in water? (a) sugar (b) food colour (c) table salt (d) sawdust
16. 16.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
17. 17.⚖️ 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
18. 18.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
19. 19.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a magnet (c) a spoon (d) warm water
20. 20.⚖️ 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
21. 21.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a magnet (c) yeast (d) a piece of string
22. 22.True or false: browning lemon ink is a change that can be undone. (a) False (b) True
23. 23.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) safe from small children (c) next to the baby (d) on the edge of a table
24. 24.🧈 Which of these is a change that can be undone? (a) dissolving salt (b) baking a cake (c) rusting iron (d) milk turning to curd
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) warm water (c) a piece of string (d) a magnet
26. 26.True or false: sand does not dissolve in water. (a) False (b) True
27. 27.🧈 Which of these is a change that can be undone? (a) melting butter (b) milk turning to curd (c) browning lemon ink (d) cooking an egg
28. 28.🔍 Which is the odd one out? (a) sand (b) baking soda (c) table salt (d) sugar
29. 29.🧂 Which of these does not dissolve in water? (a) cooking oil (b) baking soda (c) glucose powder (d) food colour
30. 30.⚖️ 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 measure it (c) we keep it the same
31. 31.True or false: warm water is not needed for growing salt crystals. (a) False (b) True
32. 32.⚖️ 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 measure it (c) we keep it the same
33. 33.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) crystals grow faster (c) few or no crystals (d) it turns sweet
34. 34.⚖️ 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
35. 35.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) sea water evaporates (c) fish make it (d) sand is ground up
36. 36.🧺 Do we need a mirror 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? Which of these is kept the same? (a) days to see crystals (b) the kind of salt (c) sunny or shady place
38. 38.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) warm water (c) a spoon (d) a balloon
39. 39.True or false: sugar does not dissolve in water. (a) True (b) False
40. 40.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve

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