Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 582 · 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? True or false: the kind of salt is the one thing we change. (a) True (b) False
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) warm water (c) a spoon (d) a magnet
3. 3.⚖️ 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) the amount of water (d) days to see crystals
4. 4.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to oil (c) it turns to butter (d) salt crystals form
5. 5.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny spheres (c) tiny triangles (d) tiny stars
6. 6.⚖️ 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 change it (c) we keep it the same
7. 7.True or false: yeast is needed for growing salt crystals. (a) True (b) False
8. 8.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
9. 9.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
10. 10.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) it fizzes (c) crystals grow faster (d) few or no crystals
11. 11.True or false: melting butter is a change that cannot be undone. (a) True (b) False
12. 12.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a spoon (c) a balloon (d) yeast
13. 13.True or false: sugar does not dissolve in water. (a) False (b) True
14. 14.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) milk turning to curd (c) freezing water (d) rusting iron
15. 15.⚖️ 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 keep it the same (b) we change it (c) we measure it
16. 16.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
17. 17.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) smaller crystals (c) bigger crystals (d) liquid crystals
18. 18.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) warm water (c) salt (d) turmeric powder
19. 19.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
20. 20.🌊 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
21. 21.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
22. 22.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
23. 23.🧈 Which of these is a change that can be undone? (a) rusting iron (b) dissolving salt (c) milk turning to curd (d) baking a cake
24. 24.True or false: a spoon is needed for growing salt crystals. (a) True (b) False
25. 25.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
26. 26.⚖️ 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 change it (c) we keep it the same
27. 27.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
28. 28.True or false: baking a cake is a change that can be undone. (a) True (b) False
29. 29.🧂 Why do we stir in salt until no more will dissolve? (a) to make it fizz (b) to cool the water (c) to make it very salty (d) to change its colour
30. 30.🔍 Which is the odd one out? (a) food colour (b) table salt (c) sand (d) sugar
31. 31.🧈 Can this change be undone: milk turning to curd? (a) cannot be undone (b) can be undone
32. 32.🔍 Which is the odd one out? (a) sawdust (b) sand (c) baking soda (d) small pebbles
33. 33.⚖️ 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
34. 34.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) turmeric powder (c) a piece of string (d) yeast
35. 35.True or false: browning lemon ink is a change that cannot be undone. (a) False (b) True
36. 36.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a battery cell (b) a shallow dish (c) warm water (d) salt
37. 37.🧂 Which of these does not dissolve in water? (a) glucose powder (b) baking soda (c) small pebbles (d) food colour
38. 38.🧂 Which of these dissolves in water? (a) sugar (b) cooking oil (c) chalk powder (d) sand
39. 39.🧂 Why do crystals appear as the dish dries? (a) salt eats water (b) the dish melts (c) salt grows roots (d) water evaporates
40. 40.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone

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