Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 474 · 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.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
2. 2.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
3. 3.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
4. 4.🧂 Which of these dissolves in water? (a) sawdust (b) cooking oil (c) small pebbles (d) table salt
5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a mirror (c) salt (d) a piece of string
6. 6.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
7. 7.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
8. 8.⚖️ 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
9. 9.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a piece of string (c) a magnet (d) turmeric powder
10. 10.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a magnet (c) warm water (d) salt
11. 11.🧂 Which of these does not dissolve in water? (a) glucose powder (b) sand (c) baking soda (d) table salt
12. 12.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) yeast (c) salt (d) a spoon
13. 13.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
14. 14.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) empty (c) frozen (d) saturated
15. 15.⚖️ 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
16. 16.⚖️ 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
17. 17.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a battery cell (c) turmeric powder (d) a shallow dish
18. 18.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) dissolving salt (c) baking a cake (d) melting ice
19. 19.🧈 Can this change be undone: dissolving salt? (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? Which of these is the one thing we change? (a) the amount of water (b) the same dish (c) sunny or shady place (d) the amount of salt
21. 21.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it turns sweet (c) few or no crystals (d) it fizzes
22. 22.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
23. 23.🔍 Which is the odd one out? (a) food colour (b) cooking oil (c) chalk powder (d) sand
24. 24.True or false: freezing water is a change that cannot be undone. (a) False (b) True
25. 25.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
26. 26.🧂 Which of these dissolves in water? (a) cooking oil (b) small pebbles (c) sugar (d) sand
27. 27.True or false: salt is needed for growing salt crystals. (a) False (b) True
28. 28.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
29. 29.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) smaller crystals (c) bigger crystals (d) liquid crystals
30. 30.True or false: dissolving salt is a change that can be undone. (a) False (b) True
31. 31.🧂 Which of these dissolves in water? (a) sand (b) chalk powder (c) glucose powder (d) cooking oil
32. 32.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) sugar crystals form (c) it turns to oil (d) it turns to butter
33. 33.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
34. 34.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
35. 35.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) milk turning to curd (c) rusting iron (d) melting butter
36. 36.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
37. 37.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is what we measure. (a) True (b) False
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a battery cell (c) a shallow dish (d) warm water
39. 39.🔍 Which is the odd one out? (a) small pebbles (b) table salt (c) sand (d) chalk powder
40. 40.🔍 Which is the odd one out? (a) sand (b) glucose powder (c) baking soda (d) table salt

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