Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 550 · 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.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
2. 2.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) crystals grow faster (c) few or no crystals (d) it turns sweet
3. 3.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) turmeric powder (c) a shallow dish (d) a piece of string
4. 4.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a friend who is running (c) nobody needs to (d) a grown-up
5. 5.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt eats water (c) salt grows roots (d) water evaporates
6. 6.⚖️ 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
7. 7.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
8. 8.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) True (b) False
9. 9.⚖️ 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
10. 10.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) freezing water (c) melting ice (d) rusting iron
11. 11.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) in a busy doorway (c) next to the baby (d) on the edge of a table
12. 12.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) small pebbles (d) food colour
14. 14.True or false: sawdust dissolves in water. (a) False (b) True
15. 15.True or false: yeast is needed for growing salt crystals. (a) True (b) False
16. 16.True or false: browning lemon ink is a change that can be undone. (a) False (b) True
17. 17.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
18. 18.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is what we measure. (a) True (b) False
19. 19.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is what we measure. (a) True (b) False
20. 20.True or false: table salt dissolves in water. (a) True (b) False
21. 21.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) yeast (c) a piece of string (d) a mirror
22. 22.🧂 Which of these dissolves in water? (a) sawdust (b) sand (c) chalk powder (d) food colour
23. 23.🔍 Which is the odd one out? (a) sugar (b) cooking oil (c) small pebbles (d) sawdust
24. 24.⚖️ 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 measure it (b) we keep it the same (c) we change it
25. 25.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) yeast (c) a mirror (d) warm water
26. 26.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny cubes (c) tiny stars (d) tiny triangles
27. 27.🧺 Do we need a spoon for growing salt crystals? (a) not needed (b) needed
28. 28.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) sunny or shady place (b) days to see crystals (c) the kind of salt (d) the amount of salt
29. 29.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) salt (d) a magnet
30. 30.True or false: small pebbles dissolves in water. (a) False (b) True
31. 31.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
32. 32.🧈 Which of these is a change that can be undone? (a) baking a cake (b) cooking an egg (c) rusting iron (d) folding paper
33. 33.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
34. 34.🧂 Which of these dissolves in water? (a) sugar (b) chalk powder (c) sawdust (d) cooking oil
35. 35.🧺 Which of these is not needed for growing salt crystals? (a) a mirror (b) salt (c) warm water (d) a piece of string
36. 36.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
37. 37.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) turmeric powder (c) a spoon (d) a piece of string
38. 38.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a shallow dish (c) yeast (d) warm water
39. 39.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
40. 40.True or false: a mirror is needed for growing salt crystals. (a) False (b) True

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