Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 83 · 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) glucose powder (b) food colour (c) sugar (d) sand
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) a shallow dish (c) a spoon (d) warm water
4. 4.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
5. 5.True or false: browning lemon ink is a change that can be undone. (a) True (b) False
6. 6.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a magnet (c) warm water (d) a shallow dish
7. 7.True or false: sugar does not dissolve in water. (a) True (b) False
8. 8.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
9. 9.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) crystals grow faster (c) few or no crystals (d) it turns sweet
10. 10.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True
11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) False (b) True
12. 12.True or false: a shallow dish is needed for growing salt crystals. (a) False (b) True
13. 13.⚖️ 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) True (b) False
14. 14.⚖️ 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 kind of salt (b) the amount of water (c) sunny or shady place (d) the amount of salt
15. 15.🧂 Which of these dissolves in water? (a) table salt (b) chalk powder (c) cooking oil (d) small pebbles
16. 16.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) the youngest child (d) a friend who is running
17. 17.⚖️ 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 measure it (c) we change it
18. 18.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
19. 19.⚖️ 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
20. 20.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
21. 21.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
22. 22.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
23. 23.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to oil (c) it turns to butter (d) sugar crystals form
24. 24.🧂 Which of these does not dissolve in water? (a) table salt (b) glucose powder (c) sugar (d) cooking oil
25. 25.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
26. 26.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) salt grows roots (c) the dish melts (d) water evaporates
27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) False (b) True
28. 28.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a shallow dish (c) a piece of string (d) yeast
29. 29.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) next to the baby (c) in a busy doorway (d) on the edge of a table
30. 30.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a magnet (c) turmeric powder (d) warm water
31. 31.🧂 Which of these does not dissolve in water? (a) food colour (b) sawdust (c) glucose powder (d) table salt
32. 32.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a battery cell (c) salt (d) warm water
33. 33.⚖️ 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 keep it the same (c) we measure it
34. 34.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
35. 35.🧈 Which of these is a change that can be undone? (a) baking a cake (b) cooking an egg (c) milk turning to curd (d) melting butter
36. 36.⚖️ 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 change it (b) we keep it the same (c) we measure it
37. 37.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a spoon (c) a battery cell (d) a magnet
38. 38.True or false: a magnet is not needed for growing salt crystals. (a) False (b) True
39. 39.⚖️ 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 amount of water (b) sunny or shady place (c) days to see crystals
40. 40.🧈 Which of these is a change that cannot be undone? (a) baking a cake (b) freezing water (c) melting butter (d) dissolving salt

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