Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 381 · 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: dissolving salt is a change that cannot be undone. (a) True (b) False
2. 2.🧈 Which of these is a change that can be undone? (a) melting ice (b) milk turning to curd (c) browning lemon ink (d) cooking an egg
3. 3.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a piece of string (c) a shallow dish (d) yeast
4. 4.True or false: cooking an egg is a change that can be undone. (a) True (b) False
5. 5.⚖️ 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
6. 6.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a mirror (c) a spoon (d) a battery cell
7. 7.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) False (b) True
8. 8.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) sea water evaporates (c) sand is ground up (d) fish make it
9. 9.🔮 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
10. 10.⚖️ 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 measure it (b) we keep it the same (c) we change it
11. 11.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
12. 12.🔍 Which is the odd one out? (a) glucose powder (b) sawdust (c) chalk powder (d) sand
13. 13.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a mirror (c) warm water (d) a piece of string
14. 14.📘 What do we call a solution that cannot dissolve any more salt? (a) empty (b) saturated (c) magnetic (d) frozen
15. 15.True or false: a spoon is not needed for growing salt crystals. (a) True (b) False
16. 16.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
17. 17.True or false: sand does not dissolve in water. (a) False (b) True
18. 18.⚖️ 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 amount of water (b) the kind of salt (c) the same dish (d) days to see crystals
19. 19.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) yeast (c) a mirror (d) warm water
20. 20.True or false: turmeric powder is not needed for growing salt crystals. (a) True (b) False
21. 21.True or false: yeast is needed for growing salt crystals. (a) False (b) True
22. 22.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) False (b) True
23. 23.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
24. 24.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is what we measure. (a) False (b) True
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a magnet (c) a spoon (d) a shallow dish
26. 26.True or false: a piece of string is needed for growing salt crystals. (a) True (b) False
27. 27.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) baking a cake (c) rusting iron (d) folding paper
28. 28.⚖️ 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) False (b) True
29. 29.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny triangles (c) tiny cubes (d) tiny spheres
30. 30.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) turmeric powder (b) salt (c) a spoon (d) a piece of string
31. 31.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) smaller crystals (b) no crystals (c) liquid crystals (d) bigger crystals
32. 32.🔍 Which is the odd one out? (a) sand (b) cooking oil (c) sawdust (d) sugar
33. 33.🧂 Why do we stir in salt until no more will dissolve? (a) to make it very salty (b) to cool the water (c) to change its colour (d) to make it fizz
34. 34.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) on the edge of a table (c) next to the baby (d) in a busy doorway
35. 35.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
36. 36.🧂 Which of these does not dissolve in water? (a) food colour (b) sugar (c) glucose powder (d) chalk powder
37. 37.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is the one thing we change. (a) True (b) False
38. 38.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) warm water (c) turmeric powder (d) salt
39. 39.⚖️ 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
40. 40.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to

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