Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 271 · 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: cooking oil dissolves in water. (a) False (b) True
2. 2.True or false: food colour does not dissolve in water. (a) True (b) False
3. 3.⚖️ 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 measure it (b) we change it (c) we keep it the same
4. 4.⚖️ 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 measure it (b) we keep it the same (c) we change it
5. 5.⚖️ 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) sunny or shady place (b) the same dish (c) the amount of salt (d) the amount of water
6. 6.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
7. 7.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
8. 8.🧈 Which of these is a change that can be undone? (a) rusting iron (b) baking a cake (c) melting ice (d) browning lemon ink
9. 9.🧂 Which of these dissolves in water? (a) small pebbles (b) chalk powder (c) food colour (d) sand
10. 10.🧂 Which of these does not dissolve in water? (a) sugar (b) glucose powder (c) sand (d) baking soda
11. 11.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting butter (c) freezing water (d) browning lemon ink
12. 12.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
13. 13.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) dissolving salt (c) freezing water (d) rusting iron
14. 14.🔍 Which is the odd one out? (a) cooking oil (b) food colour (c) sugar (d) table salt
15. 15.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False
16. 16.⚖️ 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) False (b) True
17. 17.🔍 Which is the odd one out? (a) table salt (b) sugar (c) chalk powder (d) food colour
18. 18.🔍 Which is the odd one out? (a) sugar (b) baking soda (c) table salt (d) sawdust
19. 19.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
20. 20.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
21. 21.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
22. 22.True or false: a battery cell is needed for growing salt crystals. (a) False (b) True
23. 23.🧺 Which of these is needed for growing salt crystals? (a) a shallow dish (b) a balloon (c) a mirror (d) yeast
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a piece of string (d) a magnet
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) warm water (c) turmeric powder (d) a piece of string
26. 26.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) in a busy doorway (c) on the edge of a table (d) safe from small children
27. 27.⚖️ 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 keep it the same (b) we measure it (c) we change it
28. 28.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
29. 29.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a shallow dish (d) a balloon
30. 30.True or false: milk turning to curd is a change that cannot be undone. (a) False (b) True
31. 31.True or false: cooking an egg is a change that cannot be undone. (a) True (b) False
32. 32.🧂 Which of these dissolves in water? (a) sawdust (b) small pebbles (c) sugar (d) sand
33. 33.⚖️ 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 same dish
34. 34.🔍 Which is the odd one out? (a) table salt (b) cooking oil (c) sawdust (d) sand
35. 35.🧂 Which of these dissolves in water? (a) cooking oil (b) small pebbles (c) baking soda (d) sawdust
36. 36.True or false: browning lemon ink is a change that can be undone. (a) False (b) True
37. 37.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) few or no crystals (c) it turns sweet (d) it fizzes
38. 38.⚖️ 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 measure it (b) we change it (c) we keep it the same
39. 39.🧂 Why do we stir in salt until no more will dissolve? (a) to change its colour (b) to make it fizz (c) to make it very salty (d) to cool the water
40. 40.⚖️ 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) False (b) True

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