Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 443 · 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.🧂 Which of these does not dissolve in water? (a) glucose powder (b) table salt (c) food colour (d) chalk powder
2. 2.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
3. 3.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we change it (b) we measure it (c) we keep it the same
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 change it (b) we measure it (c) we keep it the same
5. 5.True or false: food colour does not dissolve in water. (a) False (b) True
6. 6.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) bigger crystals (c) smaller crystals (d) liquid crystals
7. 7.🔍 Which is the odd one out? (a) chalk powder (b) sawdust (c) table salt (d) small pebbles
8. 8.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
9. 9.True or false: rusting iron is a change that can be undone. (a) True (b) False
10. 10.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) a balloon (d) a shallow dish
11. 11.True or false: freezing water is a change that cannot be undone. (a) False (b) True
12. 12.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
13. 13.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) magnetic (c) empty (d) saturated
14. 14.⚖️ 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) days to see crystals (d) the same dish
15. 15.True or false: folding paper is a change that can be undone. (a) False (b) True
16. 16.⚖️ 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
17. 17.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) safe from small children (c) on the edge of a table (d) next to the baby
18. 18.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny stars (c) tiny spheres (d) tiny triangles
19. 19.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) salt (c) a balloon (d) a battery cell
20. 20.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
21. 21.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) turmeric powder (c) a shallow dish (d) a balloon
22. 22.🔍 Which is the odd one out? (a) table salt (b) food colour (c) small pebbles (d) baking soda
23. 23.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
24. 24.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) fish make it (c) sea water evaporates (d) sand is ground up
25. 25.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
26. 26.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) melting ice (c) freezing water (d) cooking an egg
27. 27.⚖️ 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) sunny or shady place (c) the kind of salt (d) days to see crystals
28. 28.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
29. 29.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
30. 30.🧂 Which of these does not dissolve in water? (a) table salt (b) sugar (c) baking soda (d) sawdust
31. 31.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) baking a cake (c) rusting iron (d) dissolving salt
32. 32.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
33. 33.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
34. 34.⚖️ 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
35. 35.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
36. 36.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
37. 37.True or false: yeast is needed for growing salt crystals. (a) True (b) False
38. 38.True or false: sawdust does not dissolve in water. (a) False (b) True
39. 39.🧂 Which of these dissolves in water? (a) chalk powder (b) sand (c) glucose powder (d) cooking oil
40. 40.⚖️ 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 keep it the same (b) we change it (c) we measure it

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