Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 660 · 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.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
2. 2.🧂 Which of these dissolves in water? (a) sawdust (b) sand (c) baking soda (d) chalk powder
3. 3.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) liquid crystals (c) bigger crystals (d) no crystals
4. 4.⚖️ 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
5. 5.⚖️ 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
6. 6.🔍 Which is the odd one out? (a) sand (b) chalk powder (c) glucose powder (d) sawdust
7. 7.🧂 Which of these dissolves in water? (a) glucose powder (b) cooking oil (c) sand (d) small pebbles
8. 8.True or false: folding paper is a change that cannot be undone. (a) False (b) True
9. 9.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
10. 10.⚖️ 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
11. 11.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) sand is ground up (c) salt rains down (d) sea water evaporates
12. 12.⚖️ 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 keep it the same (b) we change it (c) we measure it
13. 13.🔍 Which is the odd one out? (a) table salt (b) sugar (c) sawdust (d) baking soda
14. 14.True or false: freezing water is a change that cannot be undone. (a) False (b) True
15. 15.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
16. 16.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
17. 17.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) dissolving salt (c) folding paper (d) rusting iron
18. 18.🧂 Which of these dissolves in water? (a) cooking oil (b) sawdust (c) chalk powder (d) sugar
19. 19.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) yeast (c) a shallow dish (d) a piece of string
20. 20.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
21. 21.🧂 Which of these does not dissolve in water? (a) sawdust (b) sugar (c) table salt (d) baking soda
22. 22.True or false: turmeric powder is needed for growing salt crystals. (a) False (b) True
23. 23.True or false: melting ice is a change that cannot be undone. (a) True (b) False
24. 24.🧺 Which of these is not needed for growing salt crystals? (a) yeast (b) a piece of string (c) a shallow dish (d) warm water
25. 25.True or false: cooking an egg is a change that can be undone. (a) False (b) True
26. 26.🧂 Which of these does not dissolve in water? (a) table salt (b) sugar (c) glucose powder (d) cooking oil
27. 27.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a shallow dish (c) a piece of string (d) a battery cell
28. 28.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) a battery cell (d) warm water
29. 29.⚖️ 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 keep it the same (c) we measure it
30. 30.🔍 Which is the odd one out? (a) glucose powder (b) baking soda (c) table salt (d) cooking oil
31. 31.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) in a busy doorway (c) on the edge of a table (d) safe from small children
32. 32.🧈 Which of these is a change that can be undone? (a) dissolving salt (b) rusting iron (c) browning lemon ink (d) cooking an egg
33. 33.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) magnetic (c) empty (d) saturated
34. 34.🔍 Which is the odd one out? (a) sawdust (b) small pebbles (c) sugar (d) sand
35. 35.⚖️ 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 amount of water (b) the amount of salt (c) the same dish (d) days to see crystals
36. 36.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) warm water (c) a balloon (d) salt
37. 37.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
38. 38.True or false: turmeric powder is not needed for growing salt crystals. (a) False (b) True
39. 39.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a spoon (c) a magnet (d) yeast
40. 40.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) baking a cake (c) browning lemon ink (d) melting butter

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