Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 766 · 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 dissolves in water? (a) chalk powder (b) small pebbles (c) sand (d) food colour
2. 2.🔍 Which is the odd one out? (a) sand (b) chalk powder (c) baking soda (d) cooking oil
3. 3.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) it turns to oil (c) salt crystals form (d) sugar crystals form
4. 4.⚖️ 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) False (b) True
5. 5.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
6. 6.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) warm water (c) a balloon (d) a magnet
7. 7.⚖️ 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 amount of salt (b) sunny or shady place (c) days to see crystals (d) the same dish
8. 8.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
9. 9.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) the youngest child (c) a friend who is running (d) nobody needs to
10. 10.⚖️ 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 measure it (c) we change it
11. 11.🧈 Which of these is a change that can be undone? (a) baking a cake (b) browning lemon ink (c) milk turning to curd (d) dissolving salt
12. 12.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
13. 13.🧂 Which of these does not dissolve in water? (a) chalk powder (b) table salt (c) glucose powder (d) sugar
14. 14.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) turmeric powder (c) a battery cell (d) a shallow dish
15. 15.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a balloon (d) a piece of string
17. 17.True or false: chalk powder dissolves in water. (a) True (b) False
18. 18.🧂 Why do we stir in salt until no more will dissolve? (a) to make it very salty (b) to change its colour (c) to cool the water (d) to make it fizz
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 water (b) sunny or shady place (c) days to see crystals
20. 20.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) bigger crystals (c) liquid crystals (d) no crystals
21. 21.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny triangles (c) tiny cubes (d) tiny spheres
22. 22.⚖️ 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 amount of salt
23. 23.True or false: warm water is not needed for growing salt crystals. (a) False (b) True
24. 24.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) folding paper (c) freezing water (d) browning lemon ink
25. 25.🔍 Which is the odd one out? (a) table salt (b) glucose powder (c) small pebbles (d) food colour
26. 26.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
27. 27.🧈 Which of these is a change that can be undone? (a) rusting iron (b) milk turning to curd (c) cooking an egg (d) melting ice
28. 28.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
29. 29.🧂 Which of these dissolves in water? (a) sand (b) small pebbles (c) sugar (d) cooking oil
30. 30.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) turmeric powder (c) yeast (d) a piece of string
31. 31.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
32. 32.🧂 Which of these does not dissolve in water? (a) baking soda (b) small pebbles (c) table salt (d) sugar
33. 33.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) crystals grow faster (c) it turns sweet (d) it fizzes
34. 34.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a piece of string (c) turmeric powder (d) salt
35. 35.True or false: small pebbles dissolves in water. (a) False (b) True
36. 36.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) a battery cell (d) warm water
37. 37.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
38. 38.True or false: sugar does not dissolve in water. (a) True (b) False
39. 39.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) next to the baby (c) safe from small children (d) on the edge of a table
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