Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 891 · 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 is the odd one out? (a) sugar (b) baking soda (c) small pebbles (d) food colour
2. 2.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) crystals grow faster (c) it turns sweet (d) few or no crystals
3. 3.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) cooking an egg (c) melting ice (d) rusting iron
4. 4.⚖️ 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
5. 5.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a balloon (c) warm water (d) a piece of string
7. 7.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a piece of string (c) turmeric powder (d) salt
8. 8.🔍 Which is the odd one out? (a) food colour (b) baking soda (c) sand (d) table salt
9. 9.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a shallow dish (c) yeast (d) turmeric powder
10. 10.🧈 Which of these is a change that can be undone? (a) rusting iron (b) milk turning to curd (c) dissolving salt (d) browning lemon ink
11. 11.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny stars (c) tiny cubes (d) tiny triangles
12. 12.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a battery cell (c) a mirror (d) a piece of string
13. 13.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) liquid crystals (c) smaller crystals (d) no crystals
14. 14.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) safe from small children (c) in a busy doorway (d) next to the baby
15. 15.True or false: rusting iron is a change that can be undone. (a) True (b) False
16. 16.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a piece of string (c) a spoon (d) a magnet
17. 17.🔍 Which is the odd one out? (a) baking soda (b) sawdust (c) chalk powder (d) cooking oil
18. 18.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is the one thing we change. (a) True (b) False
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) days to see crystals (b) the same dish (c) sunny or shady place
20. 20.True or false: glucose powder does not dissolve in water. (a) True (b) False
21. 21.True or false: food colour dissolves in water. (a) False (b) True
22. 22.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
23. 23.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
24. 24.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) salt crystals form (c) sugar crystals form (d) it turns to butter
25. 25.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is what we measure. (a) False (b) True
26. 26.True or false: a mirror is not needed for growing salt crystals. (a) False (b) True
27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
28. 28.🧂 Which of these does not dissolve in water? (a) glucose powder (b) table salt (c) sugar (d) chalk powder
29. 29.True or false: yeast is needed for growing salt crystals. (a) True (b) False
30. 30.True or false: baking a cake is a change that can be undone. (a) True (b) False
31. 31.⚖️ 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 change it (c) we keep it the same
32. 32.🧂 Which of these dissolves in water? (a) sand (b) chalk powder (c) baking soda (d) small pebbles
33. 33.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
34. 34.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) yeast (c) turmeric powder (d) warm water
35. 35.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
36. 36.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) a shallow dish (d) a magnet
37. 37.🔍 Which is the odd one out? (a) sand (b) chalk powder (c) sugar (d) cooking oil
38. 38.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) warm water (c) a shallow dish (d) turmeric powder
39. 39.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) yeast (c) salt (d) a piece of string
40. 40.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone

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