Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 290 · 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? Which of these is what we measure? (a) the same dish (b) the amount of water (c) days to see crystals (d) the kind of salt
2. 2.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
3. 3.📘 What do we call a solution that cannot dissolve any more salt? (a) saturated (b) empty (c) magnetic (d) frozen
4. 4.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) salt (d) a magnet
5. 5.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) in a busy doorway (c) safe from small children (d) next to the baby
6. 6.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
7. 7.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
8. 8.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
9. 9.True or false: a battery cell is not needed for growing salt crystals. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) food colour (b) cooking oil (c) glucose powder (d) table salt
11. 11.🔍 Which is the odd one out? (a) sand (b) small pebbles (c) glucose powder (d) cooking oil
12. 12.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
13. 13.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
14. 14.True or false: chalk powder does not dissolve in water. (a) False (b) True
15. 15.True or false: salt is not needed for growing salt crystals. (a) False (b) True
16. 16.⚖️ 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 change it (b) we measure it (c) we keep it the same
17. 17.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it turns sweet (c) it fizzes (d) crystals grow faster
18. 18.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a balloon (c) a spoon (d) a shallow dish
19. 19.⚖️ 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) days to see crystals (b) the kind of salt (c) the same dish (d) sunny or shady place
20. 20.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) smaller crystals (c) bigger crystals (d) liquid crystals
21. 21.🧂 Does sand dissolve in water? (a) dissolves in water (b) does not dissolve
22. 22.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
23. 23.True or false: baking soda dissolves in water. (a) False (b) True
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) a battery cell (d) a piece of string
25. 25.⚖️ 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) sunny or shady place (c) the amount of salt
26. 26.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) dissolving salt (c) rusting iron (d) freezing water
27. 27.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) a balloon (c) a battery cell (d) a magnet
28. 28.True or false: a piece of string is not needed for growing salt crystals. (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 amount of water is what we measure. (a) False (b) True
30. 30.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) milk turning to curd (c) browning lemon ink (d) dissolving salt
31. 31.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) yeast (d) a spoon
32. 32.🧂 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
33. 33.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
34. 34.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
35. 35.🧂 Which of these dissolves in water? (a) glucose powder (b) sand (c) chalk powder (d) sawdust
36. 36.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a magnet (c) salt (d) a spoon
37. 37.⚖️ 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 keep it the same (c) we change it
38. 38.True or false: sugar dissolves in water. (a) False (b) True
39. 39.🔮 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
40. 40.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve

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