Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 531 · 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.True or false: cooking an egg is a change that can be undone. (a) True (b) False
2. 2.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) on the edge of a table (c) next to the baby (d) in a busy doorway
3. 3.⚖️ 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
4. 4.True or false: food colour dissolves in water. (a) False (b) True
5. 5.True or false: a mirror is needed for growing salt crystals. (a) False (b) True
6. 6.🧺 Which of these is needed for growing salt crystals? (a) salt (b) turmeric powder (c) a magnet (d) yeast
7. 7.True or false: melting butter is a change that cannot be undone. (a) False (b) True
8. 8.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it fizzes (c) few or no crystals (d) it turns sweet
9. 9.⚖️ 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) True (b) False
10. 10.🔍 Which is the odd one out? (a) chalk powder (b) sugar (c) glucose powder (d) baking soda
11. 11.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) baking a cake (c) melting ice (d) dissolving salt
12. 12.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
13. 13.🧺 Which of these is needed for growing salt crystals? (a) a shallow dish (b) turmeric powder (c) a battery cell (d) yeast
14. 14.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
15. 15.🧂 Which of these dissolves in water? (a) sand (b) chalk powder (c) glucose powder (d) small pebbles
16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a battery cell (c) a spoon (d) a shallow dish
17. 17.🔍 Which is the odd one out? (a) glucose powder (b) sugar (c) food colour (d) sand
18. 18.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting ice (c) freezing water (d) cooking an egg
19. 19.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a shallow dish (d) a magnet
20. 20.⚖️ 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 measure it (b) we change it (c) we keep it the same
21. 21.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
22. 22.⚖️ 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
23. 23.🔍 Which is the odd one out? (a) food colour (b) sugar (c) small pebbles (d) glucose powder
24. 24.True or false: chalk powder does not dissolve in water. (a) False (b) True
25. 25.🔍 Which is the odd one out? (a) sawdust (b) food colour (c) chalk powder (d) cooking oil
26. 26.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) True (b) False
27. 27.⚖️ 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) the same dish (c) sunny or shady place (d) days to see crystals
28. 28.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
29. 29.⚖️ 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) the amount of salt (b) the amount of water (c) sunny or shady place (d) days to see crystals
30. 30.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) turmeric powder (d) warm water
31. 31.True or false: salt is not needed for growing salt crystals. (a) True (b) False
32. 32.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
33. 33.True or false: salt is needed for growing salt crystals. (a) False (b) True
34. 34.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny spheres (c) tiny triangles (d) tiny cubes
35. 35.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) liquid crystals (c) smaller crystals (d) bigger crystals
36. 36.🧂 Which of these does not dissolve in water? (a) baking soda (b) glucose powder (c) food colour (d) cooking oil
37. 37.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
38. 38.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
39. 39.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
40. 40.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed

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