Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 638 · 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.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) a piece of string (c) warm water (d) salt
2. 2.⚖️ 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 change it (b) we measure it (c) we keep it the same
3. 3.True or false: a battery cell is not needed for growing salt crystals. (a) True (b) False
4. 4.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a piece of string (c) a balloon (d) a spoon
5. 5.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
6. 6.⚖️ 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
7. 7.True or false: yeast is needed for growing salt crystals. (a) False (b) True
8. 8.True or false: sugar does not dissolve in water. (a) True (b) False
9. 9.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) crystals grow faster (c) it fizzes (d) it turns sweet
10. 10.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) on the edge of a table (c) next to the baby (d) safe from small children
11. 11.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting ice (c) browning lemon ink (d) folding paper
12. 12.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) smaller crystals (c) liquid crystals (d) bigger crystals
13. 13.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) folding paper (c) rusting iron (d) melting ice
14. 14.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
15. 15.🔍 Which is the odd one out? (a) sugar (b) table salt (c) glucose powder (d) sawdust
16. 16.⚖️ 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 same dish (c) the amount of salt (d) sunny or shady place
17. 17.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
18. 18.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
19. 19.⚖️ 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
20. 20.True or false: milk turning to curd is a change that can be undone. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) sand (b) cooking oil (c) sugar (d) small pebbles
22. 22.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
23. 23.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) cooking an egg (c) freezing water (d) milk turning to curd
24. 24.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) sugar crystals form (c) salt crystals form (d) it turns to oil
25. 25.🧺 Which of these is not needed for growing salt crystals? (a) turmeric powder (b) salt (c) warm water (d) a shallow dish
26. 26.True or false: a balloon is not needed for growing salt crystals. (a) True (b) False
27. 27.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) a shallow dish (c) a battery cell (d) a piece of string
28. 28.🧂 Which of these does not dissolve in water? (a) sugar (b) chalk powder (c) table salt (d) food colour
29. 29.True or false: a piece of string is needed for growing salt crystals. (a) True (b) False
30. 30.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) salt (c) a spoon (d) turmeric powder
31. 31.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
32. 32.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a shallow dish (c) salt (d) a mirror
33. 33.🔍 Which is the odd one out? (a) small pebbles (b) sand (c) food colour (d) chalk powder
34. 34.True or false: baking a cake is a change that can be undone. (a) True (b) False
35. 35.⚖️ 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) days to see crystals (c) the amount of salt
36. 36.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) salt grows roots (c) water evaporates (d) the dish melts
37. 37.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny spheres (c) tiny triangles (d) tiny stars
38. 38.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
39. 39.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
40. 40.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a mirror (c) a piece of string (d) warm water

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