Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 980 · 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.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
2. 2.True or false: chalk powder dissolves in water. (a) True (b) False
3. 3.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a mirror (c) yeast (d) warm water
4. 4.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) salt (c) warm water (d) a shallow dish
5. 5.🔍 Which is the odd one out? (a) table salt (b) chalk powder (c) baking soda (d) sugar
6. 6.🔮 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
7. 7.🧂 Which of these does not dissolve in water? (a) baking soda (b) chalk powder (c) table salt (d) food colour
8. 8.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
9. 9.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
10. 10.True or false: browning lemon ink is a change that cannot be undone. (a) False (b) True
11. 11.🌊 How is salt made in salt pans by the sea? (a) sea water evaporates (b) sand is ground up (c) salt rains down (d) fish make it
12. 12.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) salt grows roots (c) the dish melts (d) water evaporates
13. 13.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a spoon (c) a piece of string (d) yeast
14. 14.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
15. 15.True or false: salt is needed for growing salt crystals. (a) False (b) True
16. 16.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
17. 17.True or false: a battery cell is not needed for growing salt crystals. (a) True (b) False
18. 18.⚖️ 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 keep it the same (b) we change it (c) we measure it
19. 19.⚖️ 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) sunny or shady place (b) the amount of water (c) the kind of salt (d) days to see crystals
20. 20.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
21. 21.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) melting ice (c) baking a cake (d) freezing water
22. 22.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
23. 23.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a battery cell (c) a shallow dish (d) a piece of string
24. 24.🔍 Which is the odd one out? (a) sand (b) cooking oil (c) small pebbles (d) baking soda
25. 25.🧂 Which of these dissolves in water? (a) small pebbles (b) cooking oil (c) food colour (d) sand
26. 26.⚖️ 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 change it (b) we keep it the same (c) we measure it
27. 27.True or false: baking a cake is a change that cannot be undone. (a) True (b) False
28. 28.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) warm water (c) a mirror (d) a shallow dish
29. 29.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
30. 30.True or false: small pebbles does not dissolve in water. (a) False (b) True
31. 31.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
32. 32.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) small pebbles (d) glucose powder
33. 33.🧺 Which of these is needed for growing salt crystals? (a) a piece of string (b) a balloon (c) a mirror (d) yeast
34. 34.🧂 Which of these does not dissolve in water? (a) sugar (b) food colour (c) glucose powder (d) sand
35. 35.⚖️ 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) True (b) False
36. 36.🧂 Which of these does not dissolve in water? (a) food colour (b) table salt (c) sugar (d) cooking oil
37. 37.⚖️ 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
38. 38.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) liquid crystals (c) smaller crystals (d) no crystals
39. 39.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
40. 40.⚖️ 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

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