Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 233 · 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.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) bigger crystals (c) liquid crystals (d) smaller crystals
2. 2.⚖️ 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
3. 3.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) melting ice (c) baking a cake (d) dissolving salt
4. 4.⚖️ 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
5. 5.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) turmeric powder (c) a spoon (d) a mirror
6. 6.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny cubes (c) tiny triangles (d) tiny stars
7. 7.⚖️ 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 keep it the same (b) we change it (c) we measure it
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) turmeric powder (d) a spoon
9. 9.⚖️ 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) sunny or shady place (c) the same dish
10. 10.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
11. 11.🧈 Which of these is a change that cannot be undone? (a) browning lemon ink (b) melting butter (c) dissolving salt (d) melting ice
12. 12.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a mirror (d) a spoon
13. 13.🧺 Which of these is not needed for growing salt crystals? (a) a mirror (b) salt (c) a spoon (d) a shallow dish
14. 14.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
15. 15.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
16. 16.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
17. 17.True or false: sawdust does not dissolve in water. (a) True (b) False
18. 18.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a magnet (d) a piece of string
19. 19.True or false: salt is not needed for growing salt crystals. (a) True (b) False
20. 20.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a mirror (c) salt (d) yeast
21. 21.🧺 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) yeast
22. 22.True or false: cooking an egg is a change that can be undone. (a) True (b) False
23. 23.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a mirror (c) turmeric powder (d) a shallow dish
24. 24.🔍 Which is the odd one out? (a) glucose powder (b) sand (c) chalk powder (d) sawdust
25. 25.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) it turns to oil (c) salt crystals form (d) sugar crystals form
26. 26.⚖️ 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
27. 27.⚖️ 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 same dish (c) sunny or shady place (d) the kind of salt
28. 28.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
29. 29.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
30. 30.True or false: melting ice is a change that cannot be undone. (a) True (b) False
31. 31.True or false: a magnet is needed for growing salt crystals. (a) False (b) True
32. 32.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
33. 33.⚖️ 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
34. 34.🔍 Which is the odd one out? (a) food colour (b) glucose powder (c) small pebbles (d) baking soda
35. 35.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
36. 36.🔍 Which is the odd one out? (a) sand (b) food colour (c) glucose powder (d) table salt
37. 37.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
38. 38.🧂 Which of these does not dissolve in water? (a) food colour (b) sugar (c) baking soda (d) small pebbles
39. 39.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) warm water (d) a battery cell
40. 40.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve

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