Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 934 · 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.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny spheres (c) tiny stars (d) tiny triangles
2. 2.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) a balloon (c) a magnet (d) turmeric powder
3. 3.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
4. 4.⚖️ 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
5. 5.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
6. 6.True or false: food colour dissolves in water. (a) False (b) True
7. 7.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a magnet (c) a shallow dish (d) a piece of string
8. 8.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting butter (c) rusting iron (d) melting ice
9. 9.🧂 Why do crystals appear as the dish dries? (a) water evaporates (b) salt eats water (c) the dish melts (d) salt grows roots
10. 10.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the amount of water (b) sunny or shady place (c) days to see crystals
12. 12.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) fish make it (c) sand is ground up (d) sea water evaporates
13. 13.True or false: freezing water is a change that cannot be undone. (a) False (b) True
14. 14.🧂 Which of these dissolves in water? (a) cooking oil (b) sawdust (c) sand (d) baking soda
15. 15.⚖️ 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 salt (b) sunny or shady place (c) the same dish (d) the kind of salt
16. 16.🔍 Which is the odd one out? (a) sugar (b) glucose powder (c) sawdust (d) baking soda
17. 17.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) turmeric powder (c) a balloon (d) salt
18. 18.🧂 Which of these does not dissolve in water? (a) sugar (b) baking soda (c) sand (d) food colour
19. 19.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
20. 20.True or false: yeast is needed for growing salt crystals. (a) True (b) False
21. 21.⚖️ 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) True (b) False
22. 22.⚖️ 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 keep it the same (b) we change it (c) we measure it
23. 23.True or false: melting butter is a change that can be undone. (a) True (b) False
24. 24.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
25. 25.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) crystals grow faster (c) few or no crystals (d) it fizzes
26. 26.True or false: browning lemon ink is a change that cannot be undone. (a) False (b) True
27. 27.⚖️ 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 measure it (b) we keep it the same (c) we change it
28. 28.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
29. 29.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) safe from small children (c) next to the baby (d) in a busy doorway
30. 30.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
31. 31.⚖️ 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) False (b) True
32. 32.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
33. 33.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a magnet (c) a balloon (d) a shallow dish
34. 34.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a piece of string (c) a magnet (d) turmeric powder
35. 35.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
36. 36.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
37. 37.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the same dish (b) days to see crystals (c) sunny or shady place
38. 38.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to butter (b) salt crystals form (c) sugar crystals form (d) it turns to oil
39. 39.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a shallow dish (c) a mirror (d) a spoon
40. 40.🧈 Which of these is a change that cannot be undone? (a) browning lemon ink (b) folding paper (c) melting butter (d) dissolving salt

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