Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 811 · 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 shallow dish (b) a spoon (c) a magnet (d) warm water
2. 2.True or false: glucose powder dissolves in water. (a) False (b) True
3. 3.True or false: cooking an egg is a change that can be undone. (a) False (b) True
4. 4.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting butter (c) rusting iron (d) dissolving salt
5. 5.⚖️ 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
6. 6.⚖️ 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) sunny or shady place (b) the same dish (c) the amount of salt (d) the amount of water
7. 7.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) liquid crystals (c) no crystals (d) smaller crystals
8. 8.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
9. 9.⚖️ 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
10. 10.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
11. 11.🧺 Do we need yeast for growing salt crystals? (a) needed (b) not needed
12. 12.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
13. 13.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) warm water (c) turmeric powder (d) a mirror
14. 14.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) cooking an egg (c) melting butter (d) folding paper
15. 15.🔍 Which is the odd one out? (a) cooking oil (b) sand (c) chalk powder (d) food colour
16. 16.🧈 Which of these is a change that can be undone? (a) baking a cake (b) cooking an egg (c) freezing water (d) browning lemon ink
17. 17.⚖️ 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 salt (b) the kind of salt (c) days to see crystals (d) the same dish
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.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a magnet (c) yeast (d) a shallow dish
20. 20.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) a grown-up (c) the youngest child (d) nobody needs to
21. 21.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
22. 22.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) salt (c) yeast (d) warm water
23. 23.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
24. 24.🧈 Which of these is a change that can be undone? (a) rusting iron (b) milk turning to curd (c) baking a cake (d) melting butter
25. 25.True or false: cooking oil does not dissolve in water. (a) False (b) True
26. 26.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is the one thing we change. (a) False (b) True
27. 27.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
28. 28.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
29. 29.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a mirror (c) warm water (d) a shallow dish
30. 30.True or false: folding paper is a change that can be undone. (a) False (b) True
31. 31.True or false: browning lemon ink is a change that can be undone. (a) True (b) False
32. 32.🧂 Which of these dissolves in water? (a) cooking oil (b) food colour (c) small pebbles (d) sand
33. 33.⚖️ 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) sunny or shady place (c) the amount of salt
34. 34.🧂 Which of these does not dissolve in water? (a) sawdust (b) glucose powder (c) sugar (d) table salt
35. 35.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) a balloon (d) a spoon
36. 36.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting butter (c) baking a cake (d) melting ice
37. 37.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny spheres (b) tiny stars (c) tiny triangles (d) tiny cubes
38. 38.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
39. 39.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) next to the baby (c) on the edge of a table (d) safe from small children
40. 40.🧂 Which of these dissolves in water? (a) sand (b) chalk powder (c) small pebbles (d) baking soda

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