Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 67 · 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.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
2. 2.🧺 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 balloon
3. 3.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) warm water (c) a piece of string (d) turmeric powder
4. 4.True or false: a balloon is needed for growing salt crystals. (a) False (b) True
5. 5.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
6. 6.⚖️ 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
7. 7.True or false: baking a cake is a change that cannot be undone. (a) True (b) False
8. 8.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False
9. 9.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
10. 10.🧂 Which of these does not dissolve in water? (a) sugar (b) sawdust (c) food colour (d) baking soda
11. 11.🧂 Why do we stir in salt until no more will dissolve? (a) to cool the water (b) to change its colour (c) to make it fizz (d) to make it very salty
12. 12.🧂 Which of these does not dissolve in water? (a) sugar (b) food colour (c) small pebbles (d) baking soda
13. 13.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.True or false: melting ice is a change that cannot be undone. (a) False (b) True
15. 15.⚖️ 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 measure it (b) we keep it the same (c) we change it
16. 16.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
17. 17.⚖️ 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) sunny or shady place (c) days to see crystals (d) the same dish
18. 18.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) milk turning to curd (c) baking a cake (d) folding paper
19. 19.🧂 Which of these dissolves in water? (a) sawdust (b) glucose powder (c) sand (d) cooking oil
20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) a spoon (d) a battery cell
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 can be undone? (a) dissolving salt (b) browning lemon ink (c) milk turning to curd (d) cooking an egg
23. 23.⚖️ 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) the amount of water (c) the amount of salt (d) days to see crystals
24. 24.True or false: cooking oil does not dissolve in water. (a) False (b) True
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) salt (d) yeast
26. 26.True or false: table salt does not dissolve in water. (a) True (b) False
27. 27.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
28. 28.🧺 Which of these is needed for growing salt crystals? (a) salt (b) a mirror (c) yeast (d) a magnet
29. 29.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
30. 30.⚖️ 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
31. 31.True or false: a mirror is needed for growing salt crystals. (a) False (b) True
32. 32.True or false: yeast is needed for growing salt crystals. (a) True (b) False
33. 33.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
34. 34.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny cubes (c) tiny spheres (d) tiny stars
35. 35.True or false: melting butter is a change that can be undone. (a) False (b) True
36. 36.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt grows roots (c) salt eats water (d) water evaporates
37. 37.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) safe from small children (c) next to the baby (d) in a busy doorway
38. 38.🧈 Which of these is a change that can be undone? (a) baking a cake (b) melting ice (c) browning lemon ink (d) milk turning to curd
39. 39.True or false: cooking an egg is a change that can be undone. (a) False (b) True
40. 40.🧂 Which of these does not dissolve in water? (a) chalk powder (b) food colour (c) baking soda (d) table salt

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