Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 493 · 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.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
2. 2.⚖️ 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
3. 3.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) warm water (c) turmeric powder (d) a battery cell
4. 4.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) salt (c) a piece of string (d) a balloon
5. 5.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a shallow dish (c) a balloon (d) warm water
6. 6.True or false: milk turning to curd is a change that cannot be undone. (a) True (b) False
7. 7.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
8. 8.🧂 Which of these dissolves in water? (a) small pebbles (b) sand (c) sugar (d) sawdust
9. 9.🛟 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
10. 10.⚖️ 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 same dish (b) days to see crystals (c) sunny or shady place (d) the kind of salt
11. 11.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) a piece of string (c) salt (d) warm water
12. 12.True or false: rusting iron is a change that cannot be undone. (a) True (b) False
13. 13.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) warm water (c) a spoon (d) a mirror
14. 14.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is what we measure. (a) False (b) True
15. 15.True or false: a balloon is not needed for growing salt crystals. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) sugar (b) table salt (c) sawdust (d) food colour
17. 17.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) crystals grow faster (c) few or no crystals (d) it fizzes
18. 18.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
19. 19.⚖️ 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 salt (b) sunny or shady place (c) days to see crystals
20. 20.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
21. 21.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a magnet (c) a balloon (d) a shallow dish
22. 22.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
23. 23.⚖️ 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) True (b) False
24. 24.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
25. 25.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
26. 26.⚖️ 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) True (b) False
27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) a battery cell (d) a piece of string
28. 28.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
29. 29.🔍 Which is the odd one out? (a) sugar (b) baking soda (c) sand (d) glucose powder
30. 30.⚖️ 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 measure it (b) we change it (c) we keep it the same
31. 31.True or false: freezing water is a change that can be undone. (a) False (b) True
32. 32.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
33. 33.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
34. 34.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) melting butter (c) folding paper (d) cooking an egg
35. 35.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
36. 36.🔍 Which is the odd one out? (a) cooking oil (b) small pebbles (c) sawdust (d) table salt
37. 37.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) liquid crystals (c) bigger crystals (d) no crystals
38. 38.⚖️ 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 same dish (c) the amount of salt (d) the kind of salt
39. 39.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
40. 40.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) rusting iron (c) melting ice (d) baking a cake

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