Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 580 · 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) vinegar (b) warm water (c) salt (d) sunlight
2. 2.🫗 Which of these is done by winnowing? (a) tea leaves from tea (b) small stones from dal (c) mud from water (d) chaff from wheat grain
3. 3.🌱 Will these sprout: wet seeds in the dark? (a) sprouts (b) does not sprout
4. 4.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) moong seeds (b) cotton wool (c) a small bowl (d) yeast
6. 6.True or false: a mirror is not needed for making butter. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) detergent water (b) lemon juice (c) baking soda water (d) soap solution
8. 8.True or false: a magnet is not needed for the fizzy balloon. (a) True (b) False
9. 9.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the cream temperature”? (a) we change it (b) we measure it (c) we keep it the same
10. 10.🪴 Which part of a plant does this job: take in water from soil? (a) flower (b) roots (c) stem (d) leaves
11. 11.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
12. 12.📘 What do we call plants giving out water vapour from their leaves? (a) germination (b) reflection (c) digestion (d) transpiration
13. 13.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
14. 14.⚖️ 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 measure it (b) we change it (c) we keep it the same
15. 15.🔍 Which is the odd one out? (a) sugar (b) vinegar (c) time (d) warm water
16. 16.True or false: vinegar is something yeast needs. (a) True (b) False
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same funnel (b) the amount poured (c) how clear the water is (d) the same muddy water
18. 18.True or false: a battery cell is not needed for the secret lemon message. (a) False (b) True
19. 19.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it turns blue (b) it shrinks (c) there is no change (d) it grows bigger
20. 20.True or false: warm water is not needed for the yeast balloon. (a) True (b) False
21. 21.True or false: soap solution is an acid. (a) True (b) False
22. 22.🫧 Which of these is a base? (a) sugar water (b) orange juice (c) curd (d) baking soda water
23. 23.🔍 Which is the odd one out? (a) baking a cake (b) browning lemon ink (c) cooking an egg (d) dissolving salt
24. 24.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) the same bowls (b) wet or dry cotton (c) how many seeds sprout
25. 25.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a cotton bud (b) a small bowl (c) white paper (d) a magnet
26. 26.🔍 Which is the odd one out? (a) food colour (b) baking soda (c) table salt (d) small pebbles
27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) yeast (c) turmeric powder (d) soap solution
28. 28.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
29. 29.🔮 Can the brown writing go back to being invisible? (a) no, it stays brown (b) yes, if cooled (c) yes, in the dark (d) yes, if shaken
30. 30.True or false: a cotton bud is not needed for the secret lemon message. (a) True (b) False
31. 31.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is kept the same. (a) False (b) True
32. 32.📘 The browning of lemon juice with heat is a ___ change. (a) physical (b) musical (c) magnetic (d) chemical
33. 33.🌱 Where does a sprouting seed get its first food from? (a) the cotton wool (b) food stored in the seed (c) the sunlight only (d) the air
34. 34.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) keep it away from eyes (c) shake it near your face (d) seal it in a glass jar
35. 35.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
36. 36.🫧 Which of these is an acid? (a) sugar water (b) baking soda water (c) vinegar (d) detergent water
37. 37.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the cream temperature is kept the same. (a) True (b) False
38. 38.True or false: a battery cell is needed for sprouting seeds. (a) True (b) False
39. 39.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) use only kitchen items (d) sniff each bottle hard
40. 40.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed

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