Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 666 · 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.🛟 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
2. 2.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting butter (c) melting ice (d) cooking an egg
3. 3.True or false: turmeric powder is not needed for growing salt crystals. (a) True (b) False
4. 4.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
5. 5.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
6. 6.⚖️ 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
7. 7.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
8. 8.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) bigger crystals (c) no crystals (d) smaller crystals
9. 9.⚖️ 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) the kind of salt (d) sunny or shady place
10. 10.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
11. 11.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) the dish melts (c) salt grows roots (d) water evaporates
12. 12.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
13. 13.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
14. 14.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
15. 15.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) salt crystals form (c) sugar crystals form (d) it turns to oil
16. 16.True or false: turmeric powder is needed for growing salt crystals. (a) False (b) True
17. 17.⚖️ 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
18. 18.True or false: freezing water is a change that cannot be undone. (a) False (b) True
19. 19.⚖️ 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) False (b) True
20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) salt (c) a shallow dish (d) a spoon
21. 21.True or false: cooking oil dissolves in water. (a) True (b) False
22. 22.True or false: salt is needed for growing salt crystals. (a) True (b) False
23. 23.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
24. 24.🧈 Which of these is a change that can be undone? (a) melting butter (b) rusting iron (c) milk turning to curd (d) cooking an egg
25. 25.🧂 Which of these does not dissolve in water? (a) table salt (b) food colour (c) baking soda (d) sawdust
26. 26.🔮 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
27. 27.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
28. 28.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a mirror (c) salt (d) a magnet
29. 29.⚖️ 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) the kind of salt (c) days to see crystals
30. 30.🛟 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
31. 31.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) warm water (c) a shallow dish (d) a magnet
32. 32.⚖️ 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
33. 33.🔍 Which is the odd one out? (a) sawdust (b) cooking oil (c) small pebbles (d) table salt
34. 34.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
35. 35.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
36. 36.🧺 Which of these is not needed for growing salt crystals? (a) yeast (b) a shallow dish (c) a spoon (d) warm water
37. 37.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
38. 38.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
39. 39.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny spheres (c) tiny stars (d) tiny cubes
40. 40.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve

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