Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 806 · 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: yeast is not needed for growing salt crystals. (a) True (b) False
2. 2.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
3. 3.🧂 Which of these dissolves in water? (a) cooking oil (b) small pebbles (c) baking soda (d) sand
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) in a busy doorway (d) safe from small children
5. 5.🔍 Which is the odd one out? (a) glucose powder (b) food colour (c) cooking oil (d) baking soda
6. 6.True or false: salt is needed for growing salt crystals. (a) False (b) True
7. 7.🧈 Which of these is a change that can be undone? (a) baking a cake (b) rusting iron (c) cooking an egg (d) melting ice
8. 8.🔍 Which is the odd one out? (a) sawdust (b) chalk powder (c) sand (d) sugar
9. 9.⚖️ 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 measure it (c) we change it
10. 10.🧈 Which of these is a change that cannot be undone? (a) cooking an egg (b) melting ice (c) melting butter (d) freezing water
11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is what we measure. (a) False (b) True
12. 12.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
13. 13.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
14. 14.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a balloon (c) turmeric powder (d) a spoon
15. 15.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
16. 16.True or false: baking a cake is a change that can be undone. (a) True (b) False
17. 17.True or false: cooking an egg is a change that can be undone. (a) True (b) False
18. 18.🧂 Which of these dissolves in water? (a) sand (b) small pebbles (c) chalk powder (d) glucose powder
19. 19.True or false: a piece of string is needed for growing salt crystals. (a) False (b) True
20. 20.🧂 Which of these does not dissolve in water? (a) cooking oil (b) food colour (c) baking soda (d) glucose powder
21. 21.True or false: a mirror is not needed for growing salt crystals. (a) True (b) False
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) the same dish (b) the kind of salt (c) sunny or shady place (d) days to see crystals
23. 23.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) warm water (d) a balloon
24. 24.True or false: sand does not dissolve in water. (a) True (b) False
25. 25.⚖️ 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 measure it (b) we change it (c) we keep it the same
26. 26.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) warm water (c) a battery cell (d) a piece of string
27. 27.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
28. 28.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) warm water (c) a mirror (d) a shallow dish
29. 29.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a piece of string (c) turmeric powder (d) a mirror
30. 30.⚖️ 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) True (b) False
31. 31.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is what we measure. (a) False (b) True
32. 32.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) salt crystals form (c) it turns to oil (d) sugar crystals form
33. 33.🧂 Which of these dissolves in water? (a) small pebbles (b) cooking oil (c) sawdust (d) sugar
34. 34.True or false: sugar does not dissolve in water. (a) False (b) True
35. 35.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a magnet (c) a balloon (d) warm water
36. 36.True or false: warm water is needed for growing salt crystals. (a) False (b) True
37. 37.🧂 Which of these does not dissolve in water? (a) table salt (b) baking soda (c) glucose powder (d) sawdust
38. 38.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
39. 39.⚖️ 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 water (b) the kind of salt (c) sunny or shady place (d) days to see crystals
40. 40.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False

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