Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 103 · 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.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
2. 2.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) turmeric powder (c) a mirror (d) a shallow dish
3. 3.🔍 Which is the odd one out? (a) food colour (b) sugar (c) table salt (d) chalk powder
4. 4.⚖️ 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
5. 5.🧈 Which of these is a change that can be undone? (a) melting butter (b) browning lemon ink (c) cooking an egg (d) baking a cake
6. 6.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) a balloon (c) a battery cell (d) a mirror
7. 7.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) browning lemon ink (c) melting butter (d) folding paper
8. 8.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) few or no crystals (c) crystals grow faster (d) it fizzes
9. 9.⚖️ 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
10. 10.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
11. 11.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) warm water (d) a mirror
12. 12.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
13. 13.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
14. 14.True or false: warm water is needed for growing salt crystals. (a) True (b) False
15. 15.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) next to the baby (c) on the edge of a table (d) in a busy doorway
16. 16.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) nobody needs to (c) the youngest child (d) a friend who is running
17. 17.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
18. 18.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
19. 19.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
20. 20.True or false: sawdust dissolves in water. (a) False (b) True
21. 21.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
22. 22.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) turmeric powder (d) warm water
23. 23.🌊 How is salt made in salt pans by the sea? (a) sea water evaporates (b) fish make it (c) salt rains down (d) sand is ground up
24. 24.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) liquid crystals (c) smaller crystals (d) no crystals
25. 25.🧂 Which of these dissolves in water? (a) small pebbles (b) cooking oil (c) sawdust (d) sugar
26. 26.⚖️ 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
27. 27.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
28. 28.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
29. 29.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
30. 30.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a spoon (c) salt (d) turmeric powder
31. 31.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
32. 32.True or false: yeast is needed for growing salt crystals. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) glucose powder (b) small pebbles (c) food colour (d) baking soda
34. 34.⚖️ 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
35. 35.⚖️ 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
36. 36.True or false: cooking oil dissolves in water. (a) False (b) True
37. 37.True or false: small pebbles does not dissolve in water. (a) True (b) False
38. 38.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) True (b) False
39. 39.True or false: small pebbles dissolves in water. (a) False (b) True
40. 40.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) sunny or shady place (b) days to see crystals (c) the same dish

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