Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 215 · 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: freezing water is a change that can be undone. (a) True (b) False
2. 2.🧂 Which of these does not dissolve in water? (a) small pebbles (b) glucose powder (c) baking soda (d) sugar
3. 3.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) dissolving salt (c) cooking an egg (d) melting butter
4. 4.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a shallow dish (c) a magnet (d) salt
5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a balloon (c) salt (d) a shallow dish
6. 6.⚖️ 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) days to see crystals (c) sunny or shady place (d) the same dish
7. 7.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) yeast (d) a shallow dish
8. 8.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) fish make it (c) sand is ground up (d) sea water evaporates
9. 9.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a battery cell (c) warm water (d) a shallow dish
10. 10.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) dissolving salt (c) milk turning to curd (d) baking a cake
11. 11.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) smaller crystals (c) liquid crystals (d) bigger crystals
12. 12.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
13. 13.True or false: turmeric powder is needed for growing salt crystals. (a) False (b) True
14. 14.🛟 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
15. 15.🛟 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
16. 16.True or false: melting ice is a change that cannot be undone. (a) False (b) True
17. 17.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) it turns to oil (c) salt crystals form (d) sugar crystals form
18. 18.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
19. 19.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
20. 20.True or false: small pebbles does not dissolve in water. (a) True (b) False
21. 21.True or false: table salt does not dissolve in water. (a) False (b) True
22. 22.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
23. 23.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the kind of salt (b) sunny or shady place (c) days to see crystals
24. 24.⚖️ 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 keep it the same (b) we measure it (c) we change it
25. 25.⚖️ 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
26. 26.True or false: browning lemon ink is a change that can be undone. (a) False (b) True
27. 27.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) baking a cake (c) rusting iron (d) folding paper
28. 28.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
29. 29.⚖️ 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 keep it the same (c) we change it
30. 30.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) it fizzes (c) few or no crystals (d) crystals grow faster
31. 31.⚖️ 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
32. 32.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) melting ice (c) baking a cake (d) browning lemon ink
33. 33.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
34. 34.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) yeast (c) salt (d) warm water
35. 35.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
36. 36.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
37. 37.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
38. 38.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) salt (c) a battery cell (d) a shallow dish
39. 39.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
40. 40.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) a spoon (c) warm water (d) salt

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