Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 724 · 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: yeast is needed for the leafy bag test. (a) True (b) False
2. 2.🌱 Is warmth needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
3. 3.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a small bowl (b) a battery cell (c) a cotton bud (d) an adult with an iron
4. 4.🌱 Which of these does not sprout? (a) wet seeds by a window (b) seeds in the freezer (c) seeds on wet cotton (d) wet seeds in the dark
5. 5.🧈 Which tool is used in many Indian homes to churn curd into butter? (a) a sieve (b) a pressure cooker (c) a rolling pin (d) a mathani (churner)
6. 6.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a funnel (c) a balloon (d) muddy water
7. 7.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of sugar”? (a) we keep it the same (b) we measure it (c) we change it
8. 8.🫗 How do we separate tea leaves from tea? (a) evaporating (b) sieving (c) filtering (d) handpicking
9. 9.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) moong seeds (b) a few days (c) cotton wool (d) a battery cell
10. 10.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) cold water to rinse (b) fresh cream (c) a bowl (d) a battery cell
11. 11.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
13. 13.🧺 Which of these is needed for sprouting seeds? (a) turmeric powder (b) water (c) a magnet (d) a mirror
14. 14.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: sun or shade is kept the same. (a) False (b) True
15. 15.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
16. 16.🧺 Do we need lemon juice for the secret lemon message? (a) not needed (b) needed
17. 17.🫧 Which of these is neutral? (a) detergent water (b) orange juice (c) lemon juice (d) salt water
18. 18.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a few days (b) moong seeds (c) a small bowl (d) a balloon
19. 19.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
20. 20.🧈 Which of these is a change that can be undone? (a) baking a cake (b) melting ice (c) browning lemon ink (d) milk turning to curd
21. 21.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) it fills with soil (b) much more water (c) exactly the same (d) much less water
22. 22.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the amount of cream is kept the same. (a) False (b) True
23. 23.🛟 After the yeast experiment, what should you do with the mixture? (a) keep it for a month (b) throw it at a wall (c) pour it down the sink (d) put it in your mouth
24. 24.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
25. 25.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) the hot sunny day (b) the cool cloudy day (c) both the same (d) neither of them
26. 26.True or false: wet seeds by a window sprouts in a few days. (a) True (b) False
27. 27.🌱 Will these sprout: seeds on dry cotton? (a) sprouts (b) does not sprout
28. 28.🫗 How do we separate bran from wheat flour? (a) filtering (b) handpicking (c) winnowing (d) sieving
29. 29.True or false: yeast is needed for sprouting seeds. (a) False (b) True
30. 30.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a funnel or spoon (b) baking soda (c) vinegar (d) sugar
31. 31.🧺 Which of these is needed for sprouting seeds? (a) a balloon (b) a mirror (c) a few days (d) yeast
32. 32.🧺 Which of these is needed for the fizzy balloon? (a) sugar (b) a comb (c) a magnet (d) a balloon
33. 33.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) dry yeast (c) a paper clip (d) warm water
34. 34.🔍 Which is the odd one out? (a) air (b) sunlight (c) sugar (d) soil
35. 35.🧺 Do we need warm water for the yeast balloon? (a) needed (b) not needed
36. 36.🧈 Which of these is a change that can be undone? (a) dissolving salt (b) rusting iron (c) milk turning to curd (d) cooking an egg
37. 37.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
38. 38.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) a white party dress (d) an old shirt or apron
39. 39.🧺 Which of these is not needed for making butter? (a) yeast (b) a bowl (c) a jar with a tight lid (d) cold water to rinse
40. 40.🧺 Do we need a small bowl for the secret lemon message? (a) not needed (b) needed

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