Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 955 · 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 of these is needed for growing salt crystals? (a) turmeric powder (b) salt (c) a magnet (d) a battery cell
2. 2.True or false: browning lemon ink is a change that cannot be undone. (a) False (b) True
3. 3.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
4. 4.True or false: sawdust dissolves in water. (a) False (b) True
5. 5.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
6. 6.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting ice (c) melting butter (d) browning lemon ink
7. 7.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) cooking an egg (c) freezing water (d) folding paper
8. 8.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
9. 9.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
10. 10.True or false: sand dissolves in water. (a) False (b) True
11. 11.True or false: milk turning to curd is a change that cannot be undone. (a) False (b) True
12. 12.⚖️ 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 keep it the same (c) we measure it
13. 13.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) salt (c) a piece of string (d) a mirror
14. 14.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
15. 15.🧂 Which of these dissolves in water? (a) glucose powder (b) small pebbles (c) chalk powder (d) sand
16. 16.True or false: a shallow dish is needed for growing salt crystals. (a) False (b) True
17. 17.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) bigger crystals (c) liquid crystals (d) smaller crystals
18. 18.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) yeast (c) a piece of string (d) warm water
19. 19.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a piece of string (c) turmeric powder (d) salt
20. 20.🔍 Which is the odd one out? (a) glucose powder (b) sawdust (c) baking soda (d) food colour
21. 21.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it fizzes (c) few or no crystals (d) it turns sweet
22. 22.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) salt crystals form (c) it turns to oil (d) sugar crystals form
23. 23.True or false: rusting iron is a change that cannot be undone. (a) False (b) True
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a balloon (c) a spoon (d) a shallow dish
25. 25.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
26. 26.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
27. 27.🧂 Why do we stir in salt until no more will dissolve? (a) to make it fizz (b) to cool the water (c) to change its colour (d) to make it very salty
28. 28.🧈 Which of these is a change that can be undone? (a) freezing water (b) cooking an egg (c) browning lemon ink (d) milk turning to curd
29. 29.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
30. 30.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
31. 31.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
32. 32.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) baking a cake (c) melting ice (d) melting butter
33. 33.⚖️ 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 kind of salt (b) the same dish (c) the amount of water (d) sunny or shady place
34. 34.True or false: melting ice is a change that cannot be undone. (a) False (b) True
35. 35.🧂 Which of these dissolves in water? (a) sawdust (b) sugar (c) small pebbles (d) sand
36. 36.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
37. 37.🧂 Does small pebbles dissolve in water? (a) dissolves in water (b) does not dissolve
38. 38.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt grows roots (c) salt eats water (d) water evaporates
39. 39.⚖️ 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
40. 40.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) sea water evaporates (c) fish make it (d) sand is ground up

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