Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 473 · 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? What do we do with “days to see crystals”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
3. 3.True or false: salt is needed for growing salt crystals. (a) False (b) True
4. 4.⚖️ 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) True (b) False
5. 5.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) the dish melts (c) water evaporates (d) salt grows roots
6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) a spoon (c) salt (d) a shallow dish
7. 7.True or false: dissolving salt is a change that cannot be undone. (a) False (b) True
8. 8.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
9. 9.🔍 Which is the odd one out? (a) table salt (b) cooking oil (c) glucose powder (d) sugar
10. 10.⚖️ 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) the same dish (c) sunny or shady place
11. 11.True or false: table salt does not dissolve in water. (a) True (b) False
12. 12.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
13. 13.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
14. 14.⚖️ 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 same dish (b) sunny or shady place (c) the amount of water (d) the kind of salt
15. 15.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) saturated (c) empty (d) frozen
16. 16.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) it turns sweet (c) crystals grow faster (d) few or no crystals
17. 17.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we measure it (b) we keep it the same (c) we change it
18. 18.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to butter (c) it turns to oil (d) sugar crystals form
19. 19.⚖️ 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
20. 20.🔍 Which is the odd one out? (a) sugar (b) food colour (c) baking soda (d) sand
21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) warm water (d) a battery cell
22. 22.True or false: milk turning to curd is a change that cannot be undone. (a) False (b) True
23. 23.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) a balloon (c) yeast (d) a magnet
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) a spoon (c) a piece of string (d) a shallow dish
25. 25.True or false: baking a cake is a change that can be undone. (a) False (b) True
26. 26.🔍 Which is the odd one out? (a) baking soda (b) table salt (c) small pebbles (d) food colour
27. 27.⚖️ 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
28. 28.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) salt rains down (c) sea water evaporates (d) sand is ground up
29. 29.🧺 Do we need a piece of string for growing salt crystals? (a) not needed (b) needed
30. 30.🧂 Which of these dissolves in water? (a) sand (b) glucose powder (c) sawdust (d) small pebbles
31. 31.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
32. 32.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny cubes (c) tiny triangles (d) tiny stars
33. 33.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
34. 34.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
35. 35.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
36. 36.True or false: folding paper is a change that can be undone. (a) False (b) True
37. 37.True or false: warm water is not needed for growing salt crystals. (a) False (b) True
38. 38.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a balloon (c) salt (d) a battery cell
39. 39.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) next to the baby (c) in a busy doorway (d) safe from small children
40. 40.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting butter (c) dissolving salt (d) rusting iron

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