Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 856 · 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.🧺 Which of these is needed for growing salt crystals? (a) salt (b) turmeric powder (c) a battery cell (d) a magnet
2. 2.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
3. 3.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
4. 4.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) next to the baby (c) safe from small children (d) in a busy doorway
5. 5.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) melting ice (c) baking a cake (d) browning lemon ink
6. 6.True or false: sugar dissolves in water. (a) False (b) True
7. 7.⚖️ 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 change it (b) we keep it the same (c) we measure it
8. 8.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
9. 9.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
10. 10.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) a magnet (c) a balloon (d) a mirror
11. 11.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
12. 12.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) turmeric powder (d) warm water
13. 13.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it turns sweet (c) few or no crystals (d) it fizzes
14. 14.🧺 Do we need a piece of string for growing salt crystals? (a) needed (b) not needed
15. 15.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
16. 16.⚖️ 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
17. 17.⚖️ 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) days to see crystals (c) the kind of salt (d) the amount of water
18. 18.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) melting ice (c) baking a cake (d) folding paper
19. 19.⚖️ 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) days to see crystals (d) the amount of water
20. 20.True or false: food colour dissolves in water. (a) False (b) True
21. 21.🧂 Which of these does not dissolve in water? (a) food colour (b) sawdust (c) glucose powder (d) sugar
22. 22.True or false: warm water is needed for growing salt crystals. (a) True (b) False
23. 23.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
24. 24.🔍 Which is the odd one out? (a) food colour (b) sand (c) chalk powder (d) cooking oil
25. 25.⚖️ 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 keep it the same (c) we change it
26. 26.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is what we measure. (a) True (b) False
27. 27.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
28. 28.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
29. 29.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) frozen (c) empty (d) saturated
30. 30.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) sea water evaporates (c) salt rains down (d) fish make it
31. 31.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) folding paper (c) cooking an egg (d) freezing water
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) salt (d) a mirror
33. 33.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
34. 34.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) freezing water (c) milk turning to curd (d) melting butter
35. 35.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
36. 36.🔍 Which is the odd one out? (a) food colour (b) glucose powder (c) baking soda (d) sawdust
37. 37.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
38. 38.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
39. 39.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
40. 40.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False

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