Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 863 · 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.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a bowl (b) fresh cream (c) a jar with a tight lid (d) yeast
3. 3.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) rusting iron (c) cooking an egg (d) freezing water
4. 4.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) dark brown words (b) blue words (c) almost nothing (d) a rainbow
5. 5.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) a mirror (d) cotton or cloth
6. 6.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we measure it (b) we keep it the same (c) we change it
7. 7.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a shallow dish (c) a magnet (d) a battery cell
8. 8.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) mix bathroom cleaners (d) sniff each bottle hard
9. 9.🔍 What do you see after shaking cream in a jar for a long time? (a) clear water only (b) sugar crystals (c) lumps of butter (d) bubbles of gas
10. 10.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of water is kept the same. (a) True (b) False
11. 11.🧺 Do we need a battery cell for the yeast balloon? (a) needed (b) not needed
12. 12.🫧 Which of these is a base? (a) orange juice (b) curd (c) plain water (d) baking soda water
13. 13.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same cotton bud”? (a) we change it (b) we keep it the same (c) we measure it
14. 14.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) skip washing (b) wash your hands (c) rub your eyes (d) lick your fingers
15. 15.🧈 Can this change be undone: dissolving salt? (a) cannot be undone (b) can be undone
16. 16.🫗 How do we separate bad grains from rice? (a) winnowing (b) sieving (c) filtering (d) handpicking
17. 17.🌱 Which of these is needed for a seed to sprout? (a) warmth (b) salt (c) sunlight (d) soil
18. 18.🌱 Will these sprout: boiled seeds? (a) does not sprout (b) sprouts
19. 19.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
20. 20.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
21. 21.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it bursts at once (b) it grows much faster (c) it grows very little (d) it turns yellow
22. 22.True or false: a few hours is not needed for the leafy bag test. (a) True (b) False
23. 23.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) yeast (c) a mirror (d) a dropper or spoon
24. 24.🧺 Which of these is needed for the yeast balloon? (a) a comb (b) turmeric powder (c) a mirror (d) sugar
25. 25.True or false: seeds in the freezer does not sprout. (a) True (b) False
26. 26.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
27. 27.🧺 Which of these is needed for making butter? (a) a magnet (b) turmeric powder (c) cold water to rinse (d) a battery cell
28. 28.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
29. 29.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
30. 30.🍋 Which of these steps is a job for an adult? (a) dipping the cotton bud (b) reading the message (c) cutting the lemon (d) letting the paper dry
31. 31.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is what we measure. (a) False (b) True
32. 32.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) throw them at friends (b) never put seeds in mouth (c) feed them to pets (d) eat a few to check
33. 33.True or false: tamarind water is an acid. (a) False (b) True
34. 34.🍞 Why do we add sugar to the yeast? (a) it is food for yeast (b) to colour it (c) to make it sweet (d) to make it heavy
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the number of drops (c) the colour we see (d) the light we look in
36. 36.🪴 Which of these is a job of the roots? (a) give out water vapour (b) hold the plant in soil (c) hold up the leaves (d) carry water upward
37. 37.True or false: a rubber band is not needed for the leafy bag test. (a) True (b) False
38. 38.True or false: freezing water is a change that can be undone. (a) False (b) True
39. 39.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) sand and pebbles (d) a magnet
40. 40.True or false: a seed is needed for the fizzy balloon. (a) True (b) False

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