Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 665 · 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: salt is not needed for growing salt crystals. (a) False (b) True
2. 2.⚖️ 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) sunny or shady place (c) the kind of salt (d) the amount of salt
3. 3.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
4. 4.🔍 Which is the odd one out? (a) baking soda (b) sand (c) sawdust (d) cooking oil
5. 5.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False
6. 6.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
7. 7.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) it fizzes (c) crystals grow faster (d) few or no crystals
8. 8.🔍 Which is the odd one out? (a) baking soda (b) sugar (c) glucose powder (d) sawdust
9. 9.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt eats water (c) water evaporates (d) salt grows roots
10. 10.True or false: milk turning to curd is a change that cannot be undone. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) sawdust (b) sand (c) cooking oil (d) glucose powder
12. 12.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) warm water (d) turmeric powder
13. 13.🧂 Which of these does not dissolve in water? (a) chalk powder (b) sugar (c) table salt (d) food colour
14. 14.True or false: glucose powder dissolves in water. (a) True (b) False
15. 15.🧂 Which of these does not dissolve in water? (a) sugar (b) sand (c) food colour (d) table salt
16. 16.True or false: yeast is not needed for growing salt crystals. (a) True (b) False
17. 17.⚖️ 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
18. 18.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny spheres (c) tiny stars (d) tiny cubes
19. 19.🔍 Which is the odd one out? (a) small pebbles (b) food colour (c) glucose powder (d) sugar
20. 20.True or false: cooking an egg is a change that can be undone. (a) True (b) False
21. 21.True or false: dissolving salt is a change that can be undone. (a) False (b) True
22. 22.🧈 Which of these is a change that can be undone? (a) melting butter (b) browning lemon ink (c) cooking an egg (d) baking a cake
23. 23.🧂 Which of these dissolves in water? (a) small pebbles (b) chalk powder (c) cooking oil (d) baking soda
24. 24.True or false: cooking oil dissolves in water. (a) True (b) False
25. 25.🛟 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
26. 26.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
27. 27.🧂 Which of these does not dissolve in water? (a) glucose powder (b) cooking oil (c) baking soda (d) sugar
28. 28.🧂 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
29. 29.⚖️ 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) False (b) True
30. 30.🧺 Which of these is not needed for growing salt crystals? (a) yeast (b) a spoon (c) warm water (d) salt
31. 31.⚖️ 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 keep it the same (c) we measure it
32. 32.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the kind of salt (b) sunny or shady place (c) days to see crystals
34. 34.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) cooking an egg (c) folding paper (d) baking a cake
35. 35.⚖️ 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
36. 36.True or false: browning lemon ink is a change that can be undone. (a) False (b) True
37. 37.🧂 Which of these does not dissolve in water? (a) small pebbles (b) table salt (c) sugar (d) food colour
38. 38.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) bigger crystals (c) no crystals (d) liquid crystals
39. 39.🔍 Which is the odd one out? (a) sand (b) cooking oil (c) sugar (d) small pebbles
40. 40.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a spoon (c) a piece of string (d) a balloon

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