Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 650 · 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.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny spheres (c) tiny triangles (d) tiny stars
2. 2.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) saturated (c) empty (d) magnetic
3. 3.True or false: baking soda dissolves in water. (a) True (b) False
4. 4.True or false: sugar does not dissolve in water. (a) True (b) False
5. 5.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
6. 6.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) safe from small children (c) next to the baby (d) in a busy doorway
7. 7.🧺 Which of these is not needed for growing salt crystals? (a) a magnet (b) warm water (c) a piece of string (d) salt
8. 8.🔍 Which is the odd one out? (a) sand (b) sugar (c) chalk powder (d) sawdust
9. 9.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) smaller crystals (c) bigger crystals (d) no crystals
10. 10.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a balloon (c) a battery cell (d) a shallow dish
11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) True (b) False
12. 12.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
13. 13.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a battery cell (c) warm water (d) a spoon
14. 14.⚖️ 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 salt (b) sunny or shady place (c) days to see crystals (d) the same dish
15. 15.True or false: a magnet is needed for growing salt crystals. (a) False (b) True
16. 16.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the kind of salt (b) days to see crystals (c) sunny or shady place
17. 17.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is the one thing we change. (a) False (b) True
18. 18.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
19. 19.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
20. 20.⚖️ 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
21. 21.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
22. 22.⚖️ 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 kind of salt (c) the amount of water (d) sunny or shady place
23. 23.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
24. 24.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
25. 25.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
26. 26.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
27. 27.True or false: yeast is needed for growing salt crystals. (a) False (b) True
28. 28.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
29. 29.🔍 Which is the odd one out? (a) food colour (b) baking soda (c) glucose powder (d) chalk powder
30. 30.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) glucose powder (b) food colour (c) sawdust (d) table salt
32. 32.True or false: small pebbles dissolves in water. (a) False (b) True
33. 33.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt grows roots (c) water evaporates (d) salt eats water
34. 34.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) warm water (c) a piece of string (d) a mirror
35. 35.True or false: freezing water is a change that cannot be undone. (a) False (b) True
36. 36.🧈 Which of these is a change that cannot be undone? (a) baking a cake (b) melting butter (c) freezing water (d) melting ice
37. 37.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
38. 38.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a friend who is running (c) the youngest child (d) a grown-up
39. 39.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
40. 40.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a shallow dish (c) warm water (d) a balloon

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