Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 414 · 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.🍞 Does yeast need vinegar to make gas? (a) yeast needs it (b) yeast does not need it
2. 2.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is kept the same. (a) False (b) True
3. 3.🔮 Predict: you use plain water instead of vinegar. What happens? (a) very little fizzing (b) it turns to honey (c) the balloon bursts (d) a huge eruption
4. 4.🧈 What is the watery liquid left after the butter forms? (a) vinegar (b) oil (c) honey (d) buttermilk
5. 5.🍋 Which of these steps is a job a child can do? (a) ironing the paper (b) putting the iron away (c) cutting the lemon (d) dipping the cotton bud
6. 6.🔍 Which is the odd one out? (a) small pebbles (b) table salt (c) sand (d) sawdust
7. 7.True or false: seeds on wet cotton sprouts in a few days. (a) True (b) False
8. 8.🍞 Why do we add sugar to the yeast? (a) to make it heavy (b) to colour it (c) it is food for yeast (d) to make it sweet
9. 9.🧺 Which of these is not needed for the leafy bag test? (a) a potted plant (b) sunlight (c) turmeric powder (d) a few hours
10. 10.🔍 Which is the odd one out? (a) sand (b) baking soda (c) sugar (d) glucose powder
11. 11.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
12. 12.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a mirror (b) baking soda (c) a balloon (d) vinegar
13. 13.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the same bottles”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.🧺 Which of these is needed for sprouting seeds? (a) a magnet (b) a balloon (c) a mirror (d) moong seeds
15. 15.🌱 Will these sprout: seeds in the freezer? (a) sprouts (b) does not sprout
16. 16.True or false: a clear plastic bag is not needed for the leafy bag test. (a) False (b) True
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.True or false: sugar water is neutral. (a) False (b) True
19. 19.True or false: baking a cake is a change that can be undone. (a) True (b) False
20. 20.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) vinegar (b) a clear plastic bag (c) a few hours (d) a potted plant
21. 21.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
22. 22.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) vinegar (b) sugar water (c) soap solution (d) lemon juice
24. 24.🧺 Do we need a few hours for the leafy bag test? (a) not needed (b) needed
25. 25.🧈 Which tool is used in many Indian homes to churn curd into butter? (a) a sieve (b) a mathani (churner) (c) a rolling pin (d) a pressure cooker
26. 26.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) muddy water (c) a funnel (d) a balloon
28. 28.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) yeast (d) lemon juice
29. 29.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) a friend who is running (c) the youngest child (d) nobody needs to
30. 30.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) not needed (b) needed
31. 31.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a balloon (c) yeast (d) cotton or cloth
32. 32.🫧 Is curd an acid, a base or neutral? (a) an acid (b) neutral (c) a base
33. 33.True or false: melting ice is a change that can be undone. (a) False (b) True
34. 34.True or false: warm water is something yeast needs. (a) False (b) True
35. 35.🧈 Why does shaking cream make butter? (a) the jar adds butter (b) the lid is warm (c) shaking adds salt (d) fat bits stick together
36. 36.🛟 What should you do if vinegar splashes in your eye? (a) rub it hard (b) add baking soda (c) ignore it (d) rinse with clean water
37. 37.🛟 What should you do after touching soil or seeds? (a) rub your eyes (b) lick your fingers (c) skip washing (d) wash your hands
38. 38.🫧 Which of these is neutral? (a) plain water (b) orange juice (c) baking soda water (d) soap solution
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
40. 40.🛟 Why must children keep their fingers away from the iron? (a) it is sticky (b) it can burn skin (c) it is magnetic (d) it is cold

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