Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 523 · 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: melting ice is a change that cannot be undone. (a) True (b) False
2. 2.True or false: table salt does not dissolve in water. (a) True (b) False
3. 3.True or false: salt is needed for growing salt crystals. (a) False (b) True
4. 4.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
5. 5.🧂 Which of these does not dissolve in water? (a) sugar (b) chalk powder (c) glucose powder (d) food colour
6. 6.True or false: a mirror is not needed for growing salt crystals. (a) False (b) True
7. 7.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
8. 8.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) a magnet (c) a balloon (d) yeast
9. 9.True or false: food colour dissolves in water. (a) False (b) True
10. 10.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) in a busy doorway (c) next to the baby (d) safe from small children
11. 11.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
12. 12.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a piece of string (c) turmeric powder (d) warm water
13. 13.⚖️ 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 kind of salt (c) the amount of salt (d) days to see crystals
14. 14.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
15. 15.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
16. 16.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
17. 17.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
18. 18.⚖️ 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) False (b) True
19. 19.🔍 Which is the odd one out? (a) table salt (b) cooking oil (c) sand (d) chalk powder
20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) salt (c) warm water (d) a shallow dish
21. 21.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) nobody needs to (c) the youngest child (d) a friend who is running
22. 22.⚖️ 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 measure it (b) we keep it the same (c) we change it
23. 23.🧂 Which of these does not dissolve in water? (a) small pebbles (b) food colour (c) sugar (d) baking soda
24. 24.🧺 Which of these is needed for growing salt crystals? (a) salt (b) yeast (c) a magnet (d) a balloon
25. 25.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
26. 26.🧈 Which of these is a change that can be undone? (a) baking a cake (b) melting ice (c) milk turning to curd (d) browning lemon ink
27. 27.🧈 Which of these is a change that can be undone? (a) baking a cake (b) dissolving salt (c) milk turning to curd (d) cooking an egg
28. 28.True or false: small pebbles does not dissolve in water. (a) False (b) True
29. 29.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a balloon (c) a spoon (d) salt
30. 30.🔍 Which is the odd one out? (a) cooking oil (b) chalk powder (c) baking soda (d) small pebbles
31. 31.🔍 Which is the odd one out? (a) sugar (b) cooking oil (c) table salt (d) glucose powder
32. 32.🔮 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
33. 33.⚖️ 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 change it (b) we keep it the same (c) we measure it
34. 34.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) warm water (c) a balloon (d) a magnet
35. 35.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) sugar crystals form (c) it turns to oil (d) salt crystals form
36. 36.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
37. 37.🔍 Which is the odd one out? (a) food colour (b) sugar (c) table salt (d) sawdust
38. 38.⚖️ 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
39. 39.True or false: freezing water is a change that cannot be undone. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) table salt (b) small pebbles (c) baking soda (d) sugar

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