Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 324 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — acid and base, indicator colours, chemical change, what seeds and yeast need, transpiration, crystals or filtering. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.True or false: sand and pebbles is not needed for the muddy water filter. (a) True (b) False
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
3. 3.🧺 Do we need a magnet for making butter? (a) needed (b) not needed
4. 4.True or false: orange juice is an acid. (a) False (b) True
5. 5.🧺 Do we need a battery cell for the secret lemon message? (a) needed (b) not needed
6. 6.True or false: turmeric powder is not needed for sprouting seeds. (a) True (b) False
7. 7.True or false: turmeric powder is not needed for the secret lemon message. (a) True (b) False
8. 8.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the amount of vinegar (b) the same bottle (c) size of the balloon (d) spoons of baking soda
9. 9.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the kind of juice is kept the same. (a) True (b) False
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) True (b) False
11. 11.🌱 Which of these is needed for a seed to sprout? (a) salt (b) warmth (c) sunlight (d) soil
12. 12.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the amount of sugar (b) size of the balloon (c) the amount of yeast (d) the water temperature
13. 13.🔮 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
14. 14.🔍 Which is the odd one out? (a) water (b) soil (c) warmth (d) air
15. 15.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it grows bigger (b) there is no change (c) it turns blue (d) it shrinks
16. 16.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same bowls”? (a) we measure it (b) we change it (c) we keep it the same
17. 17.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
18. 18.True or false: an empty bottle is needed for the fizzy balloon. (a) True (b) False
19. 19.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
20. 20.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
21. 21.⚖️ 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 measure it (c) we change it
22. 22.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
23. 23.🧺 Do we need a cotton bud for the secret lemon message? (a) needed (b) not needed
24. 24.🫧 Which of these is neutral? (a) salt water (b) orange juice (c) curd (d) vinegar
25. 25.🧺 Which of these is not needed for the fizzy balloon? (a) baking soda (b) an empty bottle (c) a magnet (d) a tray for spills
26. 26.🧺 Do we need a battery cell for the leafy bag test? (a) needed (b) not needed
27. 27.🫧 Is curd an acid, a base or neutral? (a) an acid (b) a base (c) neutral
28. 28.True or false: sand and pebbles is needed for the muddy water filter. (a) False (b) True
29. 29.True or false: sugar is something yeast does not need. (a) True (b) False
30. 30.True or false: sugar is not needed for a seed to sprout. (a) False (b) True
31. 31.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a funnel or spoon (b) a tray for spills (c) a comb (d) an empty bottle
32. 32.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) True (b) False
33. 33.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is kept the same. (a) True (b) False
34. 34.🧺 Which of these is not needed for the fizzy balloon? (a) a balloon (b) an empty bottle (c) a mirror (d) a tray for spills
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) the amount poured (c) how clear the water is (d) the same funnel
36. 36.🔍 Which is the odd one out? (a) freezing water (b) milk turning to curd (c) melting butter (d) folding paper
37. 37.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) melting butter (c) baking a cake (d) browning lemon ink
38. 38.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) neutral (c) an acid
39. 39.🔍 Which is the odd one out? (a) dipping the cotton bud (b) plugging in the iron (c) cutting the lemon (d) ironing the paper
40. 40.🧺 Do we need dry yeast for the yeast balloon? (a) needed (b) not needed

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