Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 42 · 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) the youngest child (b) a friend who is running (c) a grown-up (d) nobody needs to
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a mirror (d) a shallow dish
3. 3.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a magnet (c) a mirror (d) a piece of string
4. 4.⚖️ 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 change it (b) we measure it (c) we keep it the same
5. 5.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
6. 6.⚖️ 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 change it (c) we measure it
7. 7.🧈 Which of these is a change that can be undone? (a) baking a cake (b) folding paper (c) milk turning to curd (d) cooking an egg
8. 8.⚖️ 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 keep it the same (b) we measure it (c) we change it
9. 9.🧂 Which of these does not dissolve in water? (a) glucose powder (b) sawdust (c) table salt (d) sugar
10. 10.🔍 Which is the odd one out? (a) sawdust (b) chalk powder (c) glucose powder (d) sand
11. 11.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a magnet (c) turmeric powder (d) a shallow dish
12. 12.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
13. 13.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
14. 14.🧂 Why do crystals appear as the dish dries? (a) water evaporates (b) salt eats water (c) the dish melts (d) salt grows roots
15. 15.🧂 Which of these dissolves in water? (a) sawdust (b) glucose powder (c) chalk powder (d) small pebbles
16. 16.True or false: sugar does not dissolve in water. (a) False (b) True
17. 17.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
18. 18.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) turmeric powder (c) a shallow dish (d) a spoon
19. 19.True or false: food colour does not dissolve in water. (a) True (b) False
20. 20.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) bigger crystals (c) no crystals (d) liquid crystals
21. 21.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) turmeric powder (c) salt (d) a shallow dish
22. 22.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) sunny or shady place (b) the amount of water (c) days to see crystals
23. 23.🧂 Which of these dissolves in water? (a) baking soda (b) small pebbles (c) cooking oil (d) chalk powder
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a magnet (c) a piece of string (d) salt
25. 25.🧂 Which of these does not dissolve in water? (a) food colour (b) sand (c) glucose powder (d) table salt
26. 26.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) magnetic (c) frozen (d) saturated
27. 27.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to oil (c) sugar crystals form (d) it turns to butter
28. 28.True or false: sugar dissolves in water. (a) True (b) False
29. 29.⚖️ 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
30. 30.True or false: table salt does not dissolve in water. (a) False (b) True
31. 31.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting ice (c) rusting iron (d) melting butter
32. 32.True or false: a battery cell is needed for growing salt crystals. (a) True (b) False
33. 33.True or false: a piece of string is needed for growing salt crystals. (a) False (b) True
34. 34.🧂 Which of these dissolves in water? (a) cooking oil (b) sawdust (c) chalk powder (d) table salt
35. 35.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a piece of string (c) a spoon (d) a mirror
36. 36.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
37. 37.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) days to see crystals (b) the amount of salt (c) sunny or shady place (d) the same dish
38. 38.True or false: yeast is not needed for growing salt crystals. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) food colour (b) sugar (c) sand (d) table salt
40. 40.True or false: freezing water is a change that can be undone. (a) True (b) False

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