Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 753 · 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: sugar does not dissolve in water. (a) True (b) False
2. 2.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) days to see crystals (b) the amount of water (c) sunny or shady place
3. 3.⚖️ 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
4. 4.⚖️ 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 amount of water (c) the kind of salt (d) days to see crystals
5. 5.⚖️ 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 change it (c) we keep it the same
6. 6.True or false: a spoon 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? Which of these is the one thing we change? (a) the amount of water (b) the amount of salt (c) sunny or shady place (d) days to see crystals
8. 8.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a balloon (c) salt (d) a piece of string
9. 9.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
10. 10.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
11. 11.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) salt (d) a battery cell
12. 12.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a battery cell (c) warm water (d) a shallow dish
13. 13.🔍 Which is the odd one out? (a) chalk powder (b) glucose powder (c) table salt (d) sugar
14. 14.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) baking a cake (c) freezing water (d) cooking an egg
15. 15.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) turmeric powder (c) a piece of string (d) a spoon
16. 16.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) it fizzes (c) few or no crystals (d) crystals grow faster
17. 17.🛟 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
18. 18.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) False (b) True
19. 19.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
20. 20.⚖️ 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
21. 21.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) dissolving salt (c) milk turning to curd (d) melting butter
22. 22.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) liquid crystals (c) bigger crystals (d) no crystals
23. 23.🛟 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
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) a magnet (d) salt
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) yeast (c) a spoon (d) warm water
26. 26.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) salt crystals form (c) it turns to butter (d) it turns to oil
27. 27.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
28. 28.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
29. 29.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) saturated (c) empty (d) magnetic
30. 30.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) freezing water (c) folding paper (d) browning lemon ink
31. 31.True or false: melting ice is a change that can be undone. (a) True (b) False
32. 32.🧺 Which of these is not needed for growing salt crystals? (a) a mirror (b) salt (c) warm water (d) a piece of string
33. 33.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
34. 34.True or false: dissolving salt is a change that cannot be undone. (a) False (b) True
35. 35.⚖️ 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) True (b) False
36. 36.⚖️ 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) True (b) False
37. 37.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
38. 38.🔍 Which is the odd one out? (a) cooking oil (b) glucose powder (c) chalk powder (d) sand
39. 39.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) rusting iron (c) cooking an egg (d) melting ice
40. 40.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is kept the same. (a) True (b) False

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