Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 303 · 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 a change that can be undone? (a) cooking an egg (b) browning lemon ink (c) baking a cake (d) dissolving salt
2. 2.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) baking a cake (c) melting ice (d) freezing water
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) a piece of string (d) a balloon
4. 4.⚖️ 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 keep it the same (b) we measure it (c) we change it
5. 5.True or false: browning lemon ink is a change that can be undone. (a) True (b) False
6. 6.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False
7. 7.⚖️ 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) False (b) True
8. 8.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) salt rains down (c) fish make it (d) sea water evaporates
9. 9.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
10. 10.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) turmeric powder (c) yeast (d) a spoon
11. 11.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
12. 12.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
13. 13.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
14. 14.⚖️ 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
15. 15.True or false: freezing water is a change that cannot be undone. (a) False (b) True
16. 16.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) turmeric powder (c) a spoon (d) warm water
17. 17.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
18. 18.🧈 Which of these is a change that cannot be undone? (a) cooking an egg (b) melting ice (c) dissolving salt (d) freezing water
19. 19.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
20. 20.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
21. 21.🛟 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
22. 22.⚖️ 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 same dish (b) the kind of salt (c) days to see crystals (d) the amount of salt
23. 23.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) browning lemon ink (c) baking a cake (d) folding paper
24. 24.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) salt grows roots (c) the dish melts (d) water evaporates
25. 25.True or false: small pebbles does not dissolve in water. (a) True (b) False
26. 26.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
27. 27.🧈 Which of these is a change that can be undone? (a) rusting iron (b) cooking an egg (c) browning lemon ink (d) melting ice
28. 28.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting butter (c) browning lemon ink (d) melting ice
29. 29.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a piece of string (c) a mirror (d) salt
30. 30.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) saturated (c) empty (d) magnetic
31. 31.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) a shallow dish (d) yeast
32. 32.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to oil (c) it turns to butter (d) salt crystals form
33. 33.🧈 Which of these is a change that cannot be undone? (a) rusting iron (b) freezing water (c) folding paper (d) melting butter
34. 34.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) salt (c) a piece of string (d) yeast
35. 35.True or false: turmeric powder is not needed for growing salt crystals. (a) False (b) True
36. 36.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
37. 37.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) sunny or shady place (b) the amount of water (c) days to see crystals
38. 38.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is the one thing we change. (a) True (b) False
39. 39.🧂 Why do we stir in salt until no more will dissolve? (a) to cool the water (b) to change its colour (c) to make it fizz (d) to make it very salty
40. 40.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) True (b) False

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids