Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 552 · 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.True or false: yeast is not needed for growing salt crystals. (a) True (b) False
2. 2.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) True (b) False
3. 3.🌊 How is salt made in salt pans by the sea? (a) sea water evaporates (b) fish make it (c) sand is ground up (d) salt rains down
4. 4.🔍 Which is the odd one out? (a) cooking oil (b) food colour (c) chalk powder (d) sawdust
5. 5.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
6. 6.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
7. 7.True or false: a mirror is not needed for growing salt crystals. (a) False (b) True
8. 8.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
9. 9.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) turmeric powder (c) a spoon (d) salt
10. 10.🔍 Which is the odd one out? (a) food colour (b) sawdust (c) glucose powder (d) sugar
11. 11.🔮 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
12. 12.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) in a busy doorway (c) next to the baby (d) on the edge of a table
13. 13.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) milk turning to curd (c) melting ice (d) folding paper
14. 14.⚖️ 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) days to see crystals (c) the amount of salt
15. 15.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
16. 16.True or false: sawdust does not dissolve in water. (a) False (b) True
17. 17.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) baking a cake (c) folding paper (d) cooking an egg
18. 18.True or false: chalk powder dissolves in water. (a) False (b) True
19. 19.🧂 Which of these does not dissolve in water? (a) cooking oil (b) glucose powder (c) table salt (d) sugar
20. 20.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
21. 21.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) table salt (d) sand
22. 22.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
23. 23.⚖️ 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) days to see crystals (c) the kind of salt
24. 24.⚖️ 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) False (b) True
25. 25.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) magnetic (c) saturated (d) empty
26. 26.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) turmeric powder (c) a piece of string (d) a balloon
27. 27.⚖️ 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
28. 28.🧂 Why do crystals appear as the dish dries? (a) water evaporates (b) salt eats water (c) the dish melts (d) salt grows roots
29. 29.True or false: food colour dissolves in water. (a) True (b) False
30. 30.True or false: sand dissolves in water. (a) True (b) False
31. 31.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
32. 32.🧂 Which of these dissolves in water? (a) glucose powder (b) sand (c) cooking oil (d) chalk powder
33. 33.⚖️ 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) days to see crystals (b) the amount of salt (c) the amount of water (d) sunny or shady place
34. 34.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) warm water (c) a mirror (d) salt
35. 35.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
36. 36.True or false: glucose powder dissolves in water. (a) True (b) False
37. 37.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a balloon (c) a spoon (d) salt
38. 38.🔍 Which is the odd one out? (a) sawdust (b) cooking oil (c) glucose powder (d) chalk powder
39. 39.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a balloon (c) a shallow dish (d) a mirror
40. 40.True or false: salt is needed for growing salt crystals. (a) True (b) False

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