Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 591 · 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? Which of these is the one thing we change? (a) sunny or shady place (b) the amount of salt (c) the same dish (d) days to see crystals
2. 2.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a piece of string (c) warm water (d) a balloon
3. 3.True or false: table salt dissolves in water. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) food colour (b) sand (c) sugar (d) baking soda
5. 5.⚖️ 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 change it (c) we measure it
6. 6.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) True (b) False
7. 7.⚖️ 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 keep it the same (b) we measure it (c) we change it
8. 8.⚖️ 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
9. 9.True or false: warm water is needed for growing salt crystals. (a) False (b) True
10. 10.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) warm water (c) a shallow dish (d) salt
11. 11.True or false: salt is not needed for growing salt crystals. (a) True (b) False
12. 12.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) safe from small children (c) on the edge of a table (d) in a busy doorway
13. 13.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
14. 14.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
15. 15.True or false: baking soda dissolves in water. (a) False (b) True
16. 16.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
17. 17.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) freezing water (c) dissolving salt (d) baking a cake
18. 18.True or false: glucose powder does not dissolve in water. (a) True (b) False
19. 19.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is what we measure. (a) True (b) False
20. 20.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) saturated (c) magnetic (d) empty
21. 21.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) crystals grow faster (c) it fizzes (d) few or no crystals
22. 22.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny stars (c) tiny triangles (d) tiny spheres
23. 23.🧺 Which of these is not needed for growing salt crystals? (a) turmeric powder (b) a piece of string (c) salt (d) warm water
24. 24.⚖️ 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 measure it (b) we keep it the same (c) we change it
25. 25.True or false: melting butter is a change that cannot be undone. (a) True (b) False
26. 26.True or false: baking soda does not dissolve in water. (a) True (b) False
27. 27.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a balloon (c) turmeric powder (d) a piece of string
28. 28.🧂 Which of these does not dissolve in water? (a) table salt (b) glucose powder (c) sugar (d) cooking oil
29. 29.⚖️ 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 same dish
30. 30.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
31. 31.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) sunny or shady place (b) the amount of salt (c) days to see crystals (d) the same dish
32. 32.🧈 Which of these is a change that can be undone? (a) melting ice (b) browning lemon ink (c) rusting iron (d) cooking an egg
33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is the one thing we change. (a) True (b) False
34. 34.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
35. 35.True or false: melting ice is a change that can be undone. (a) False (b) True
36. 36.⚖️ 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 measure it (c) we change it
37. 37.🧂 Which of these does not dissolve in water? (a) sugar (b) sawdust (c) glucose powder (d) baking soda
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) a shallow dish (c) a piece of string (d) a spoon
39. 39.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) melting ice (c) melting butter (d) cooking an egg
40. 40.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) False (b) True

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