Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 959 · 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.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) salt (c) a shallow dish (d) yeast
2. 2.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a shallow dish (c) yeast (d) a spoon
3. 3.🔍 Which is the odd one out? (a) sand (b) glucose powder (c) food colour (d) table salt
4. 4.🧂 Which of these dissolves in water? (a) chalk powder (b) sugar (c) sand (d) small pebbles
5. 5.🔍 Which is the odd one out? (a) chalk powder (b) sugar (c) small pebbles (d) sand
6. 6.True or false: table salt dissolves in water. (a) True (b) False
7. 7.True or false: warm water is needed for growing salt crystals. (a) False (b) True
8. 8.True or false: small pebbles dissolves in water. (a) True (b) False
9. 9.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) on the edge of a table (c) safe from small children (d) next to the baby
10. 10.True or false: a piece of string is not needed for growing salt crystals. (a) True (b) False
11. 11.🧈 Can this change be undone: freezing water? (a) cannot be undone (b) can be undone
12. 12.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
13. 13.True or false: baking soda does not dissolve in water. (a) True (b) False
14. 14.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) warm water (c) turmeric powder (d) a balloon
15. 15.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
16. 16.⚖️ 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 kind of salt (b) the amount of salt (c) sunny or shady place (d) the amount of water
17. 17.⚖️ 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) True (b) False
18. 18.🧂 Which of these dissolves in water? (a) chalk powder (b) sand (c) table salt (d) sawdust
19. 19.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny triangles (c) tiny cubes (d) tiny spheres
20. 20.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
21. 21.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a spoon (c) a shallow dish (d) a magnet
22. 22.⚖️ 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) False (b) True
23. 23.True or false: browning lemon ink is a change that cannot be undone. (a) False (b) True
24. 24.🧂 Does sugar dissolve in water? (a) does not dissolve (b) dissolves in water
25. 25.True or false: baking a cake is a change that cannot be undone. (a) False (b) True
26. 26.⚖️ 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 measure it (b) we change it (c) we keep it the same
27. 27.⚖️ 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
28. 28.🧈 Which of these is a change that can be undone? (a) rusting iron (b) melting butter (c) cooking an egg (d) milk turning to curd
29. 29.⚖️ 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 amount of salt (c) days to see crystals (d) the amount of water
30. 30.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) baking a cake (c) folding paper (d) freezing water
31. 31.🧂 Which of these does not dissolve in water? (a) sugar (b) sawdust (c) baking soda (d) table salt
32. 32.🧈 Which of these is a change that can be undone? (a) dissolving salt (b) milk turning to curd (c) baking a cake (d) browning lemon ink
33. 33.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
34. 34.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
35. 35.🧈 Which of these is a change that can be undone? (a) melting ice (b) cooking an egg (c) baking a cake (d) rusting iron
36. 36.True or false: a mirror is needed for growing salt crystals. (a) False (b) True
37. 37.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a grown-up (d) a friend who is running
38. 38.True or false: sugar dissolves in water. (a) True (b) False
39. 39.⚖️ 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
40. 40.True or false: melting ice is a change that cannot be undone. (a) True (b) False

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