Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 626 · 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 is a change that can be undone? (a) browning lemon ink (b) folding paper (c) rusting iron (d) cooking an egg
2. 2.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to butter (c) salt crystals form (d) it turns to oil
3. 3.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a piece of string (c) a magnet (d) a battery cell
4. 4.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny triangles (c) tiny cubes (d) tiny stars
5. 5.⚖️ 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 change it (b) we measure it (c) we keep it the same
6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) salt (c) a balloon (d) warm water
7. 7.🧂 Why do crystals appear as the dish dries? (a) water evaporates (b) the dish melts (c) salt eats water (d) salt grows roots
8. 8.🧂 Which of these dissolves in water? (a) sugar (b) sawdust (c) cooking oil (d) sand
9. 9.True or false: cooking an egg is a change that cannot be undone. (a) True (b) False
10. 10.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
11. 11.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
12. 12.⚖️ 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 water (b) the amount of salt (c) days to see crystals (d) the same dish
13. 13.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
14. 14.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) warm water (c) a balloon (d) a magnet
15. 15.🔍 Which is the odd one out? (a) glucose powder (b) chalk powder (c) food colour (d) table salt
16. 16.⚖️ 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 salt (b) days to see crystals (c) sunny or shady place (d) the kind of salt
17. 17.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) browning lemon ink (c) melting butter (d) baking a cake
18. 18.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
19. 19.⚖️ 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
20. 20.True or false: a balloon is needed for growing salt crystals. (a) False (b) True
21. 21.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) False (b) True
22. 22.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) baking a cake (c) folding paper (d) dissolving salt
23. 23.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) safe from small children (c) on the edge of a table (d) in a busy doorway
24. 24.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
25. 25.🧺 Which of these is not needed for growing salt crystals? (a) a battery cell (b) a piece of string (c) a shallow dish (d) a spoon
26. 26.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
27. 27.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
28. 28.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
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 amount of salt (c) days to see crystals
30. 30.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) turmeric powder (c) yeast (d) a mirror
31. 31.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
32. 32.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
33. 33.True or false: table salt dissolves in water. (a) False (b) True
34. 34.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
35. 35.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
36. 36.🔍 Which is the odd one out? (a) sand (b) sugar (c) table salt (d) food colour
37. 37.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a magnet (c) a piece of string (d) a shallow dish
38. 38.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) turmeric powder (c) a mirror (d) salt
39. 39.🧈 Which of these is a change that can be undone? (a) dissolving salt (b) baking a cake (c) cooking an egg (d) browning lemon ink
40. 40.True or false: yeast is needed for growing salt crystals. (a) True (b) False

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