Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 336 · 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.⚖️ 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 change it (c) we keep it the same
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a shallow dish (c) turmeric powder (d) warm water
3. 3.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
4. 4.True or false: a magnet is not needed for growing salt crystals. (a) False (b) True
5. 5.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
6. 6.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
7. 7.⚖️ 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 amount of salt (b) sunny or shady place (c) days to see crystals (d) the amount of water
8. 8.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) the dish melts (c) water evaporates (d) salt grows roots
9. 9.🧈 Which of these is a change that can be undone? (a) baking a cake (b) folding paper (c) milk turning to curd (d) browning lemon ink
10. 10.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
11. 11.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a balloon (c) warm water (d) a shallow dish
12. 12.🧺 Which of these is not needed for growing salt crystals? (a) a battery cell (b) warm water (c) a shallow dish (d) salt
13. 13.True or false: table salt does not dissolve in water. (a) False (b) True
14. 14.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
15. 15.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) few or no crystals (c) crystals grow faster (d) it turns sweet
16. 16.⚖️ 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 amount of water (b) days to see crystals (c) sunny or shady place
17. 17.🧂 Why do we stir in salt until no more will dissolve? (a) to make it very salty (b) to make it fizz (c) to change its colour (d) to cool the water
18. 18.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) fish make it (c) salt rains down (d) sea water evaporates
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 the one thing we change. (a) True (b) False
20. 20.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) sugar crystals form (c) it turns to oil (d) it turns to butter
21. 21.⚖️ 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 change it (b) we measure it (c) we keep it the same
22. 22.True or false: freezing water is a change that can be undone. (a) True (b) False
23. 23.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
24. 24.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a grown-up (c) nobody needs to (d) a friend who is running
25. 25.⚖️ 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 keep it the same (b) we change it (c) we measure it
26. 26.⚖️ 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
27. 27.🔍 Which is the odd one out? (a) table salt (b) sand (c) small pebbles (d) chalk powder
28. 28.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a balloon (d) a shallow dish
29. 29.🧺 Which of these is needed for growing salt crystals? (a) warm water (b) a mirror (c) a battery cell (d) a magnet
30. 30.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
31. 31.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
32. 32.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) empty (c) magnetic (d) saturated
33. 33.🧂 Which of these does not dissolve in water? (a) glucose powder (b) table salt (c) small pebbles (d) sugar
34. 34.🧂 Which of these does not dissolve in water? (a) baking soda (b) table salt (c) cooking oil (d) glucose powder
35. 35.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
36. 36.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is the one thing we change. (a) False (b) True
37. 37.True or false: cooking an egg is a change that cannot be undone. (a) True (b) False
38. 38.⚖️ 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 kind of salt (c) sunny or shady place
39. 39.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) rusting iron (c) baking a cake (d) dissolving salt
40. 40.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a battery cell (c) a mirror (d) a spoon

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