Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 238 · 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 is the odd one out? (a) glucose powder (b) baking soda (c) cooking oil (d) table salt
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) yeast (b) warm water (c) a shallow dish (d) a piece of string
3. 3.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a magnet (d) a piece of string
4. 4.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a shallow dish (c) turmeric powder (d) a magnet
5. 5.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
6. 6.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) sugar crystals form (c) it turns to oil (d) it turns to butter
7. 7.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we keep it the same (b) we measure it (c) we change it
8. 8.⚖️ 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
9. 9.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
10. 10.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
11. 11.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
12. 12.🧂 Which of these does not dissolve in water? (a) table salt (b) chalk powder (c) glucose powder (d) baking soda
13. 13.⚖️ 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 same dish (b) days to see crystals (c) sunny or shady place
14. 14.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) next to the baby (c) on the edge of a table (d) safe from small children
15. 15.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
16. 16.True or false: cooking an egg is a change that cannot be undone. (a) False (b) True
17. 17.⚖️ 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 measure it (c) we keep it the same
18. 18.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) baking a cake (c) rusting iron (d) dissolving salt
19. 19.🧂 Why do we stir in salt until no more will dissolve? (a) to make it very salty (b) to make it fizz (c) to change its colour (d) to cool the water
20. 20.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
21. 21.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
22. 22.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) it turns sweet (c) crystals grow faster (d) few or no crystals
23. 23.⚖️ 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
24. 24.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
25. 25.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
26. 26.True or false: a balloon is not needed for growing salt crystals. (a) True (b) False
27. 27.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
28. 28.True or false: food colour dissolves in water. (a) False (b) True
29. 29.⚖️ 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
30. 30.True or false: food colour does not dissolve in water. (a) True (b) False
31. 31.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
32. 32.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
33. 33.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a balloon (c) a magnet (d) salt
34. 34.True or false: sugar dissolves in water. (a) False (b) True
35. 35.⚖️ 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 measure it (c) we keep it the same
36. 36.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) days to see crystals (b) the kind of salt (c) the amount of water (d) the amount of salt
37. 37.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
38. 38.True or false: baking a cake is a change that can be undone. (a) True (b) False
39. 39.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) a shallow dish (c) warm water (d) salt
40. 40.🛟 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

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