Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 385 · 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.⚖️ 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 amount of salt (b) the amount of water (c) sunny or shady place (d) days to see crystals
2. 2.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) milk turning to curd (c) dissolving salt (d) rusting iron
3. 3.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a battery cell (c) a spoon (d) a shallow dish
4. 4.🧂 Which of these dissolves in water? (a) sand (b) baking soda (c) sawdust (d) chalk powder
5. 5.⚖️ 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
6. 6.True or false: freezing water is a change that can be undone. (a) False (b) True
7. 7.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) salt (d) turmeric powder
8. 8.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a balloon (c) warm water (d) a spoon
9. 9.⚖️ 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) sunny or shady place (c) the amount of water (d) the amount of salt
10. 10.🧂 Which of these does not dissolve in water? (a) glucose powder (b) chalk powder (c) sugar (d) food colour
11. 11.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
12. 12.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny triangles (c) tiny cubes (d) tiny spheres
13. 13.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) salt (c) turmeric powder (d) a battery cell
14. 14.⚖️ 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
15. 15.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it turns sweet (c) it fizzes (d) few or no crystals
16. 16.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
17. 17.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) baking a cake (c) dissolving salt (d) melting butter
18. 18.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) rusting iron (c) melting ice (d) baking a cake
19. 19.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
20. 20.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is the one thing we change. (a) False (b) True
21. 21.True or false: table salt does not dissolve in water. (a) False (b) True
22. 22.🧂 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
23. 23.True or false: a spoon is needed for growing salt crystals. (a) True (b) False
24. 24.⚖️ 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
25. 25.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is the one thing we change. (a) False (b) True
26. 26.🧈 Which of these is a change that can be undone? (a) melting butter (b) milk turning to curd (c) baking a cake (d) browning lemon ink
27. 27.🔍 Which is the odd one out? (a) chalk powder (b) table salt (c) food colour (d) glucose powder
28. 28.⚖️ 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 measure it (b) we keep it the same (c) we change it
29. 29.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
30. 30.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
31. 31.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) freezing water (c) baking a cake (d) rusting iron
32. 32.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
33. 33.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
34. 34.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
35. 35.⚖️ 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) days to see crystals (c) sunny or shady place
36. 36.🧂 Which of these does not dissolve in water? (a) table salt (b) cooking oil (c) baking soda (d) sugar
37. 37.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) safe from small children (c) on the edge of a table (d) in a busy doorway
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) salt (d) a balloon
39. 39.⚖️ 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 keep it the same (c) we measure it
40. 40.True or false: glucose powder does not dissolve in water. (a) False (b) True

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