Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 512 · 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: a mirror is not needed for growing salt crystals. (a) False (b) True
2. 2.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a mirror (c) a spoon (d) a battery cell
3. 3.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
4. 4.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) False (b) True
5. 5.⚖️ 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 amount of salt (d) days to see crystals
6. 6.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
7. 7.⚖️ 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 amount of water (c) sunny or shady place
8. 8.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) in a busy doorway (c) safe from small children (d) on the edge of a table
9. 9.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) it turns sweet (c) crystals grow faster (d) few or no crystals
10. 10.True or false: rusting iron is a change that cannot be undone. (a) False (b) True
11. 11.True or false: sugar does not dissolve in water. (a) False (b) True
12. 12.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
13. 13.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
14. 14.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a mirror (c) a magnet (d) warm water
15. 15.🛟 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
16. 16.🧂 Which of these dissolves in water? (a) cooking oil (b) chalk powder (c) small pebbles (d) food colour
17. 17.🧈 Which of these is a change that can be undone? (a) baking a cake (b) browning lemon ink (c) melting butter (d) cooking an egg
18. 18.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) dissolving salt (c) browning lemon ink (d) folding paper
19. 19.True or false: food colour dissolves in water. (a) True (b) False
20. 20.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
21. 21.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True
22. 22.⚖️ 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
23. 23.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the kind of salt is kept the same. (a) False (b) True
24. 24.⚖️ 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 measure it (b) we change it (c) we keep it the same
25. 25.🧂 Which of these dissolves in water? (a) sawdust (b) sugar (c) sand (d) small pebbles
26. 26.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) rusting iron (c) freezing water (d) folding paper
27. 27.🧂 Which of these does not dissolve in water? (a) baking soda (b) glucose powder (c) chalk powder (d) food colour
28. 28.True or false: freezing water is a change that cannot be undone. (a) False (b) True
29. 29.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) sea water evaporates (c) fish make it (d) salt rains down
30. 30.🧈 Which of these is a change that can be undone? (a) freezing water (b) baking a cake (c) cooking an egg (d) rusting iron
31. 31.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) salt crystals form (c) sugar crystals form (d) it turns to butter
32. 32.True or false: yeast is needed for growing salt crystals. (a) True (b) False
33. 33.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) warm water (c) a magnet (d) a piece of string
34. 34.🔍 Which is the odd one out? (a) sawdust (b) sugar (c) cooking oil (d) sand
35. 35.⚖️ 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
36. 36.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) True (b) False
37. 37.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) baking a cake (c) folding paper (d) freezing water
38. 38.⚖️ 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 keep it the same (b) we change it (c) we measure it
39. 39.True or false: warm water is needed for growing salt crystals. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) glucose powder (b) food colour (c) table salt (d) small pebbles

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