Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 984 · 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.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a balloon (c) muddy water (d) sand and pebbles
2. 2.🧈 Which tool is used in many Indian homes to churn curd into butter? (a) a mathani (churner) (b) a pressure cooker (c) a sieve (d) a rolling pin
3. 3.True or false: carry water upward is a job of the roots. (a) True (b) False
4. 4.🧺 Do we need a mirror for the secret lemon message? (a) needed (b) not needed
5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a shallow dish (c) a piece of string (d) yeast
6. 6.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) a seed (c) a funnel or spoon (d) vinegar
7. 7.🌱 Where does a sprouting seed get its first food from? (a) the air (b) the cotton wool (c) food stored in the seed (d) the sunlight only
8. 8.🫗 How do we separate mud from water? (a) filtering (b) winnowing (c) sieving (d) handpicking
9. 9.True or false: bad grains from rice is done by evaporating. (a) True (b) False
10. 10.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
11. 11.🍞 Which of these is something yeast needs? (a) sunlight (b) a magnet (c) vinegar (d) sugar
12. 12.🧂 Which of these dissolves in water? (a) glucose powder (b) small pebbles (c) cooking oil (d) sawdust
13. 13.🍞 Why do we add sugar to the yeast? (a) to colour it (b) to make it sweet (c) it is food for yeast (d) to make it heavy
14. 14.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) sunlight (c) turmeric powder (d) a few hours
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.🔍 Which is the odd one out? (a) plugging in the iron (b) dipping the cotton bud (c) reading the message (d) writing the message
17. 17.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
18. 18.🔍 Which is the odd one out? (a) curd (b) lemon juice (c) orange juice (d) sugar water
19. 19.🧈 Can this change be undone: folding paper? (a) cannot be undone (b) can be undone
20. 20.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False
22. 22.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it grows bigger (b) it shrinks (c) it turns blue (d) there is no change
23. 23.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) wet or dry cotton (b) the same bowls (c) how many seeds sprout
24. 24.🌱 Is sunlight needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
25. 25.True or false: tamarind water is a base. (a) True (b) False
26. 26.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
27. 27.🧺 Which of these is needed for making butter? (a) a balloon (b) turmeric powder (c) a bowl (d) a mirror
28. 28.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a balloon (b) cold water to rinse (c) a bowl (d) a timer
29. 29.🧺 Which of these is needed for making butter? (a) a magnet (b) a mirror (c) a jar with a tight lid (d) a balloon
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
31. 31.🫗 Which of these is done by evaporating? (a) bran from wheat flour (b) sugar from sugar water (c) gravel from fine sand (d) small stones from dal
32. 32.🧺 Do we need an empty bottle for the fizzy balloon? (a) not needed (b) needed
33. 33.⚖️ 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
34. 34.🪴 Which of these is a job of the leaves? (a) hold the plant in soil (b) make food in sunlight (c) take in water from soil (d) make seeds
35. 35.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) a paper clip (c) dry yeast (d) sugar
36. 36.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) your school uniform (d) an old shirt or apron
37. 37.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
38. 38.⚖️ Fair test — do seeds need water to sprout? What do we do with “wet or dry cotton”? (a) we keep it the same (b) we change it (c) we measure it
39. 39.🔍 Which is the odd one out? (a) vinegar (b) a magnet (c) sugar (d) sunlight
40. 40.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) melting butter (c) baking a cake (d) folding paper

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