Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 775 · 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.🔍 Which is the odd one out? (a) food colour (b) cooking oil (c) sugar (d) table salt
2. 2.True or false: vinegar is a base. (a) True (b) False
3. 3.🧺 Which of these is needed for sprouting seeds? (a) water (b) yeast (c) a balloon (d) a battery cell
4. 4.🧺 Which of these is not needed for the leafy bag test? (a) a potted plant (b) vinegar (c) a rubber band (d) sunlight
5. 5.🔮 Predict: you stop shaking after only one minute. What do you have? (a) still runny cream (b) cheese (c) butter lumps (d) ghee
6. 6.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) salty (c) clearer (d) muddier
7. 7.🧺 Which of these is not needed for the secret lemon message? (a) a balloon (b) white paper (c) a small bowl (d) an adult with an iron
8. 8.🌱 Which of these does not sprout? (a) seeds on wet cotton (b) wet seeds by a window (c) wet seeds in the dark (d) seeds on dry cotton
9. 9.🛟 Which safety rule fits the fizzy balloon experiment? (a) seal it in a glass jar (b) shake it near your face (c) put it in your mouth (d) keep it away from eyes
10. 10.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) cotton wool (b) moong seeds (c) a small bowl (d) yeast
11. 11.🫧 Which of these is a base? (a) vinegar (b) tamarind water (c) curd (d) baking soda water
12. 12.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
13. 13.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the same bottle (b) size of the balloon (c) the amount of vinegar (d) spoons of baking soda
14. 14.🌱 Which of these is not needed for a seed to sprout? (a) water (b) air (c) warmth (d) sunlight
15. 15.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) the amount of sugar (b) the water temperature (c) size of the balloon
16. 16.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) milk turning to curd (c) baking a cake (d) melting butter
17. 17.🌊 How is salt made in salt pans by the sea? (a) sand is ground up (b) fish make it (c) salt rains down (d) sea water evaporates
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.⚖️ Fair test — do seeds need water to sprout? True or false: the same bowls is kept the same. (a) True (b) False
20. 20.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) the size of the plant (b) the time we wait (c) the same kind of bag (d) amount of water drops
21. 21.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) green (c) reddish-brown (d) bright blue
22. 22.True or false: warm water is something yeast does not need. (a) True (b) False
23. 23.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
24. 24.True or false: bad grains from rice is done by handpicking. (a) False (b) True
25. 25.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we measure it (c) we change it
28. 28.True or false: a comb is needed for the yeast balloon. (a) True (b) False
29. 29.🌱 Which of these is not needed for a seed to sprout? (a) air (b) warmth (c) water (d) sugar
30. 30.True or false: a balloon is needed for the secret lemon message. (a) False (b) True
31. 31.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sip each liquid (d) sniff each bottle hard
32. 32.True or false: table salt dissolves in water. (a) True (b) False
33. 33.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) a mirror (c) a rubber band (d) a few hours
34. 34.True or false: seeds on wet cotton sprouts in a few days. (a) False (b) True
35. 35.True or false: warm water is needed for growing salt crystals. (a) True (b) False
36. 36.🧺 Do we need a mirror for the leafy bag test? (a) needed (b) not needed
37. 37.🧂 Which of these dissolves in water? (a) sand (b) baking soda (c) chalk powder (d) sawdust
38. 38.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the water evaporates (c) the filter adds soap (d) the mud dissolves
39. 39.True or false: bad grains from rice is done by evaporating. (a) True (b) False
40. 40.🧺 Which of these is not needed for the yeast balloon? (a) a battery cell (b) sugar (c) a balloon (d) warm water

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