Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 787 · 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 same dish”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) a spoon (c) salt (d) warm water
3. 3.🧂 Which of these does not dissolve in water? (a) sugar (b) cooking oil (c) table salt (d) baking soda
4. 4.🔍 Which is the odd one out? (a) food colour (b) table salt (c) baking soda (d) small pebbles
5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a shallow dish (c) yeast (d) warm water
6. 6.True or false: table salt dissolves in water. (a) False (b) True
7. 7.🧂 Which of these does not dissolve in water? (a) food colour (b) glucose powder (c) sugar (d) chalk powder
8. 8.True or false: a piece of string is needed for growing salt crystals. (a) False (b) True
9. 9.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) turmeric powder (c) a piece of string (d) salt
10. 10.🧂 Which of these does not dissolve in water? (a) baking soda (b) sawdust (c) glucose powder (d) sugar
11. 11.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) sugar crystals form (c) salt crystals form (d) it turns to oil
12. 12.🧂 Which of these dissolves in water? (a) cooking oil (b) sand (c) chalk powder (d) baking soda
13. 13.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
14. 14.True or false: sand does not dissolve in water. (a) True (b) False
15. 15.⚖️ 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 amount of salt (c) sunny or shady place
16. 16.🧈 Which of these is a change that cannot be undone? (a) cooking an egg (b) folding paper (c) melting ice (d) melting butter
17. 17.True or false: cooking oil dissolves in water. (a) False (b) True
18. 18.🧈 Which of these is a change that cannot be undone? (a) baking a cake (b) dissolving salt (c) melting ice (d) melting butter
19. 19.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) empty (c) magnetic (d) saturated
20. 20.True or false: food colour does not dissolve in water. (a) True (b) False
21. 21.True or false: yeast is needed for growing salt crystals. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) small pebbles (b) cooking oil (c) chalk powder (d) sugar
23. 23.🧂 Which of these does not dissolve in water? (a) table salt (b) sugar (c) sand (d) glucose powder
24. 24.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
25. 25.⚖️ 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) True (b) False
26. 26.⚖️ 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 keep it the same (b) we change it (c) we measure it
27. 27.True or false: salt is not needed for growing salt crystals. (a) False (b) True
28. 28.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
29. 29.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) warm water (c) a balloon (d) a piece of string
30. 30.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) smaller crystals (c) no crystals (d) liquid crystals
31. 31.🔍 Which is the odd one out? (a) chalk powder (b) food colour (c) sugar (d) glucose powder
32. 32.⚖️ 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
33. 33.True or false: a spoon is needed for growing salt crystals. (a) True (b) False
34. 34.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny triangles (c) tiny stars (d) tiny cubes
35. 35.⚖️ 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) True (b) False
36. 36.🧂 Which of these dissolves in water? (a) sawdust (b) small pebbles (c) glucose powder (d) sand
37. 37.⚖️ 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 measure it (c) we change it
38. 38.True or false: a magnet is not needed for growing salt crystals. (a) True (b) False
39. 39.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
40. 40.🔍 Which is the odd one out? (a) small pebbles (b) sawdust (c) table salt (d) chalk powder

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