Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 138 · 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: baking soda does not dissolve in water. (a) False (b) True
2. 2.🧂 Which of these dissolves in water? (a) sawdust (b) baking soda (c) cooking oil (d) sand
3. 3.🧺 Do we need warm water for growing salt crystals? (a) needed (b) not needed
4. 4.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) safe from small children (c) on the edge of a table (d) next to the baby
5. 5.True or false: a mirror is needed for growing salt crystals. (a) False (b) True
6. 6.True or false: cooking oil dissolves in water. (a) False (b) True
7. 7.🧈 Which of these is a change that cannot be undone? (a) baking a cake (b) freezing water (c) dissolving salt (d) melting butter
8. 8.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
9. 9.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a piece of string (c) a shallow dish (d) turmeric powder
10. 10.🔍 Which is the odd one out? (a) small pebbles (b) sand (c) sugar (d) chalk powder
11. 11.True or false: a magnet is not needed for growing salt crystals. (a) False (b) True
12. 12.⚖️ 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 keep it the same (b) we measure it (c) we change it
13. 13.True or false: a spoon is not needed for growing salt crystals. (a) False (b) True
14. 14.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
15. 15.🧺 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 balloon
16. 16.True or false: small pebbles dissolves in water. (a) True (b) False
17. 17.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a piece of string (c) a magnet (d) turmeric powder
18. 18.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
19. 19.⚖️ 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 amount of water
20. 20.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) crystals grow faster (c) it fizzes (d) few or no crystals
21. 21.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
22. 22.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) warm water (c) a piece of string (d) a magnet
23. 23.🔍 Which is the odd one out? (a) table salt (b) baking soda (c) food colour (d) chalk powder
24. 24.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny stars (c) tiny triangles (d) tiny cubes
25. 25.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) water evaporates (c) salt grows roots (d) the dish melts
26. 26.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) smaller crystals (c) liquid crystals (d) no crystals
27. 27.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) salt (c) a battery cell (d) a spoon
28. 28.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) warm water (c) salt (d) yeast
29. 29.True or false: glucose powder dissolves in water. (a) False (b) True
30. 30.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a friend who is running (d) a grown-up
31. 31.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
32. 32.⚖️ 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 kind of salt
33. 33.🔍 Which is the odd one out? (a) sugar (b) glucose powder (c) baking soda (d) sand
34. 34.🧂 Which of these dissolves in water? (a) glucose powder (b) small pebbles (c) chalk powder (d) sand
35. 35.⚖️ 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
36. 36.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
37. 37.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) yeast (c) a spoon (d) salt
38. 38.🔍 Which is the odd one out? (a) cooking oil (b) table salt (c) chalk powder (d) small pebbles
39. 39.🧺 Which of these is needed for growing salt crystals? (a) salt (b) turmeric powder (c) a mirror (d) a battery cell
40. 40.⚖️ 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 amount of water (b) sunny or shady place (c) days to see crystals (d) the kind of salt

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