Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 185 · 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.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
2. 2.True or false: cooking an egg is a change that can be undone. (a) False (b) True
3. 3.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) nobody needs to (c) a friend who is running (d) the youngest child
4. 4.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a magnet (c) salt (d) a mirror
5. 5.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
6. 6.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
7. 7.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) liquid crystals (c) no crystals (d) bigger crystals
8. 8.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
9. 9.🧂 Which of these dissolves in water? (a) sand (b) cooking oil (c) small pebbles (d) table salt
10. 10.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
11. 11.🔍 Which is the odd one out? (a) chalk powder (b) glucose powder (c) sugar (d) table salt
12. 12.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
13. 13.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
14. 14.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
15. 15.⚖️ 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 measure it (c) we keep it the same
16. 16.True or false: a balloon is not needed for growing salt crystals. (a) False (b) True
17. 17.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a spoon (c) a shallow dish (d) a battery cell
18. 18.🧈 Which of these is a change that can be undone? (a) rusting iron (b) folding paper (c) cooking an egg (d) milk turning to curd
19. 19.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False
20. 20.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
21. 21.⚖️ 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
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 amount of salt (b) the amount of water (c) sunny or shady place (d) days to see crystals
23. 23.🧈 Which of these is a change that cannot be undone? (a) milk turning to curd (b) melting butter (c) freezing water (d) folding paper
24. 24.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a battery cell (c) a piece of string (d) a balloon
25. 25.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) sea water evaporates (c) salt rains down (d) sand is ground up
26. 26.True or false: a balloon is needed for growing salt crystals. (a) False (b) True
27. 27.⚖️ 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 change it (b) we measure it (c) we keep it the same
28. 28.True or false: baking a cake is a change that can be undone. (a) True (b) False
29. 29.🧂 Which of these does not dissolve in water? (a) table salt (b) sand (c) baking soda (d) glucose powder
30. 30.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) freezing water (c) dissolving salt (d) cooking an egg
31. 31.🧂 Which of these does not dissolve in water? (a) glucose powder (b) baking soda (c) sugar (d) cooking oil
32. 32.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) cooking an egg (c) dissolving salt (d) rusting iron
33. 33.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
34. 34.⚖️ 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 kind of salt (b) the amount of salt (c) the amount of water (d) days to see crystals
35. 35.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) True (b) False
36. 36.True or false: baking soda does not dissolve in water. (a) True (b) False
37. 37.⚖️ 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 measure it (b) we change it (c) we keep it the same
38. 38.🧈 Can this change be undone: browning lemon ink? (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? What do we do with “sunny or shady place”? (a) we keep it the same (b) we change it (c) we measure it
40. 40.🧂 Which of these dissolves in water? (a) chalk powder (b) sand (c) glucose powder (d) small pebbles

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