Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 602 · 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 of these is needed for the muddy water filter? (a) a battery cell (b) yeast (c) a funnel (d) a magnet
2. 2.🧺 Do we need yeast for making butter? (a) not needed (b) needed
3. 3.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) the same kind of bag (b) sun or shade (c) amount of water drops (d) the kind of plant
4. 4.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) sunlight (c) a potted plant (d) a mirror
5. 5.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) your best clothes (d) a white party dress
6. 6.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it bursts at once (b) it grows very little (c) it grows much faster (d) it turns yellow
7. 7.🔍 Which is the odd one out? (a) dipping the cotton bud (b) ironing the paper (c) putting the iron away (d) plugging in the iron
8. 8.🔍 Which is the odd one out? (a) warmth (b) air (c) soil (d) water
9. 9.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of yeast”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.🧺 Do we need a balloon for making butter? (a) needed (b) not needed
11. 11.🌱 Why do the seeds on dry cotton not sprout? (a) they have no salt (b) they are too wet (c) they have no water (d) they have no soil
12. 12.True or false: a few hours is not needed for the leafy bag test. (a) False (b) True
13. 13.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) size of the balloon (b) the amount of yeast (c) the same bottles (d) the water temperature
14. 14.True or false: a balloon is needed for making butter. (a) False (b) True
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
16. 16.True or false: cotton wool is not needed for sprouting seeds. (a) False (b) True
17. 17.True or false: a balloon is not needed for making butter. (a) True (b) False
18. 18.True or false: milk turning to curd is a change that can be undone. (a) False (b) True
19. 19.🍋 Which of these steps is a job a child can do? (a) cutting the lemon (b) ironing the paper (c) reading the message (d) plugging in the iron
20. 20.🧺 Do we need a bowl for making butter? (a) not needed (b) needed
21. 21.True or false: baking soda water is a base. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) time (b) warm water (c) vinegar (d) sugar
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the colour we see (c) the light we look in (d) the liquid we test
24. 24.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a funnel (c) muddy water (d) a mirror
25. 25.🔍 Which is the odd one out? (a) rusting iron (b) baking a cake (c) browning lemon ink (d) dissolving salt
26. 26.🍞 Does yeast need sunlight to make gas? (a) yeast does not need it (b) yeast needs it
27. 27.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) turmeric powder (c) cold water to rinse (d) a timer
28. 28.🧺 Which of these is needed for the secret lemon message? (a) turmeric powder (b) a battery cell (c) lemon juice (d) a magnet
29. 29.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same paper”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
31. 31.🧈 Why does shaking cream make butter? (a) the lid is warm (b) shaking adds salt (c) fat bits stick together (d) the jar adds butter
32. 32.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we keep it the same (b) we measure it (c) we change it
33. 33.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) the amount of cream (b) the cream temperature (c) time to make butter
34. 34.True or false: a small bottle is needed for the yeast balloon. (a) True (b) False
35. 35.True or false: plain water keeps turmeric yellow. (a) False (b) True
36. 36.🧺 Do we need turmeric powder for the yeast balloon? (a) not needed (b) needed
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the colour we see (c) the liquid we test (d) the light we look in
38. 38.🍋 Secret message: who does this step — ironing the paper? (a) an adult does it (b) a child can do it
39. 39.🌱 Where does a sprouting seed get its first food from? (a) the sunlight only (b) the cotton wool (c) food stored in the seed (d) the air
40. 40.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False

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