Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 397 · 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.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) sand is ground up (c) fish make it (d) sea water evaporates
2. 2.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it fizzes (c) crystals grow faster (d) it turns sweet
3. 3.True or false: small pebbles dissolves in water. (a) True (b) False
4. 4.True or false: yeast is needed for growing salt crystals. (a) False (b) True
5. 5.🧂 Does sawdust 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) warm water (b) a magnet (c) a spoon (d) a shallow dish
7. 7.🔍 Which is the odd one out? (a) glucose powder (b) food colour (c) sugar (d) sawdust
8. 8.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) nobody needs to (c) the youngest child (d) a friend who is running
9. 9.True or false: a shallow dish is not needed for growing salt crystals. (a) True (b) False
10. 10.⚖️ 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 amount of salt (c) days to see crystals (d) sunny or shady place
11. 11.True or false: food colour dissolves in water. (a) False (b) True
12. 12.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
13. 13.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
14. 14.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny cubes (c) tiny spheres (d) tiny stars
15. 15.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a battery cell (c) a piece of string (d) a spoon
16. 16.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) sunny or shady place (b) the kind of salt (c) days to see crystals (d) the same dish
17. 17.🧂 Why do we stir in salt until no more will dissolve? (a) to change its colour (b) to make it very salty (c) to cool the water (d) to make it fizz
18. 18.⚖️ 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 change it (b) we measure it (c) we keep it the same
19. 19.True or false: table salt does not dissolve in water. (a) True (b) False
20. 20.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
21. 21.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a shallow dish (c) a mirror (d) warm water
22. 22.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
23. 23.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a balloon (c) yeast (d) salt
24. 24.🧂 Which of these dissolves in water? (a) sawdust (b) baking soda (c) small pebbles (d) chalk powder
25. 25.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) True (b) False
26. 26.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) cooking an egg (c) melting butter (d) rusting iron
27. 27.🔍 Which is the odd one out? (a) small pebbles (b) glucose powder (c) table salt (d) food colour
28. 28.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
29. 29.🧂 Which of these dissolves in water? (a) sawdust (b) cooking oil (c) table salt (d) chalk powder
30. 30.🧈 Which of these is a change that can be undone? (a) melting ice (b) rusting iron (c) baking a cake (d) milk turning to curd
31. 31.🔍 Which is the odd one out? (a) glucose powder (b) table salt (c) chalk powder (d) sugar
32. 32.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) yeast (d) a piece of string
33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is what we measure. (a) False (b) True
34. 34.True or false: sawdust dissolves in water. (a) True (b) False
35. 35.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) the dish melts (c) salt eats water (d) water evaporates
36. 36.True or false: table salt dissolves in water. (a) False (b) True
37. 37.True or false: a balloon is not needed for growing salt crystals. (a) True (b) False
38. 38.⚖️ 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
39. 39.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a piece of string (c) a shallow dish (d) yeast
40. 40.🔍 Which is the odd one out? (a) baking soda (b) table salt (c) cooking oil (d) food colour

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