Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 176 · 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) a grown-up (b) the youngest child (c) nobody needs to (d) a friend who is running
2. 2.⚖️ 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
3. 3.⚖️ 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 amount of salt (b) the same dish (c) days to see crystals (d) the kind of salt
4. 4.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) baking a cake (c) cooking an egg (d) melting ice
5. 5.🧈 Which of these is a change that can be undone? (a) folding paper (b) milk turning to curd (c) browning lemon ink (d) cooking an egg
6. 6.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
7. 7.⚖️ 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
8. 8.True or false: cooking oil does not dissolve in water. (a) True (b) False
9. 9.⚖️ 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 keep it the same (b) we measure it (c) we change it
10. 10.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a spoon (c) salt (d) a battery cell
11. 11.⚖️ 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) True (b) False
12. 12.True or false: freezing water is a change that cannot be undone. (a) False (b) True
13. 13.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a mirror (c) salt (d) a battery cell
14. 14.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
15. 15.🧈 Which of these is a change that can be undone? (a) dissolving salt (b) cooking an egg (c) browning lemon ink (d) milk turning to curd
16. 16.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a magnet (c) a spoon (d) a piece of string
17. 17.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) glucose powder (b) cooking oil (c) baking soda (d) sugar
19. 19.🔮 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
20. 20.True or false: a shallow dish is not needed for growing salt crystals. (a) False (b) True
21. 21.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) magnetic (c) empty (d) frozen
22. 22.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
23. 23.True or false: a magnet is not needed for growing salt crystals. (a) False (b) True
24. 24.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) False (b) True
25. 25.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
26. 26.⚖️ 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 change it (c) we keep it the same
27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is kept the same. (a) False (b) True
28. 28.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) browning lemon ink (c) folding paper (d) melting ice
29. 29.🧂 Which of these does not dissolve in water? (a) glucose powder (b) baking soda (c) food colour (d) sawdust
30. 30.🧂 Which of these does not dissolve in water? (a) table salt (b) small pebbles (c) sugar (d) baking soda
31. 31.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) sand is ground up (c) salt rains down (d) sea water evaporates
32. 32.🧺 Do we need salt for growing salt crystals? (a) not needed (b) needed
33. 33.True or false: table salt dissolves in water. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) cooking oil (b) glucose powder (c) sand (d) chalk powder
35. 35.🧂 Which of these dissolves in water? (a) small pebbles (b) cooking oil (c) sawdust (d) table salt
36. 36.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) salt (c) turmeric powder (d) warm water
37. 37.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
38. 38.🧂 Which of these does not dissolve in water? (a) chalk powder (b) baking soda (c) glucose powder (d) sugar
39. 39.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is what we measure. (a) False (b) True
40. 40.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed

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