Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 758 · 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: make seeds is a job of the leaves. (a) False (b) True
2. 2.🧂 Which of these does not dissolve in water? (a) table salt (b) sand (c) food colour (d) glucose powder
3. 3.🍞 Does yeast need sugar to make gas? (a) yeast needs it (b) yeast does not need it
4. 4.True or false: a seed is not needed for the fizzy balloon. (a) False (b) True
5. 5.🫗 Which of these is done by filtering? (a) bad grains from rice (b) mud from water (c) salt from sea water (d) bran from wheat flour
6. 6.🪴 Which of these is a job of the stem? (a) make food in sunlight (b) take in water from soil (c) make seeds (d) carry water upward
7. 7.📘 Leaves have tiny holes that let out water vapour. What are they called? (a) petals (b) stomata (c) roots (d) veins
8. 8.🧈 Why does shaking cream make butter? (a) fat bits stick together (b) the lid is warm (c) shaking adds salt (d) the jar adds butter
9. 9.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) detergent water (c) plain water (d) lemon juice
10. 10.⚖️ Fair test — do seeds need water to sprout? Which of these is what we measure? (a) the same place (b) the kind of seeds (c) the same bowls (d) how many seeds sprout
11. 11.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) the amount of vinegar (b) spoons of baking soda (c) size of the balloon (d) the kind of balloon
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we keep it the same (c) we change it
13. 13.🍞 Does yeast need a magnet to make gas? (a) yeast does not need it (b) yeast needs it
14. 14.True or false: a magnet is something yeast does not need. (a) True (b) False
15. 15.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) use only kitchen items (d) sip each liquid
16. 16.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it turns blue (b) there is no change (c) it grows bigger (d) it shrinks
17. 17.True or false: wet seeds by a window does not sprout. (a) False (b) True
18. 18.🛟 Why must the jar lid be screwed on tightly? (a) so cream does not spill (b) so it gets hot (c) so air gets out (d) so it turns yellow
19. 19.True or false: a potted plant is needed for the leafy bag test. (a) False (b) True
20. 20.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
21. 21.🪴 Which of these is a job of the flower? (a) give out water vapour (b) carry water upward (c) make seeds (d) make food in sunlight
22. 22.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns blue (c) it turns darker red (d) it turns yellow again
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.🫗 How do we separate small stones from dal? (a) filtering (b) handpicking (c) winnowing (d) sieving
25. 25.🔮 Predict: sprouts grow in the dark for a week. What colour are their leaves? (a) blue (b) dark green (c) pale yellow (d) bright red
26. 26.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) the size of the plant (b) sun or shade (c) the time we wait (d) amount of water drops
27. 27.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the water temperature is what we measure. (a) False (b) True
28. 28.True or false: boiled seeds sprouts in a few days. (a) True (b) False
29. 29.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is the one thing we change. (a) False (b) True
30. 30.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
31. 31.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) how dark the writing is (b) the same paper (c) the iron setting (d) the kind of juice
32. 32.🌱 Will these sprout: seeds on dry cotton? (a) does not sprout (b) sprouts
33. 33.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it grows faster (b) it flowers more (c) it turns blue (d) it wilts and droops
34. 34.🧺 Which of these is not needed for making butter? (a) cold water to rinse (b) a jar with a tight lid (c) a bowl (d) a mirror
35. 35.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we keep it the same (b) we change it (c) we measure it
36. 36.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is clear (c) yes, if it is cold (d) yes, always
37. 37.🍞 Which of these is something yeast does not need? (a) warm water (b) vinegar (c) sugar (d) time
38. 38.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wipe hands on face (c) lick your fingers (d) wash hands afterwards
39. 39.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) wet or dry cotton (b) the number of seeds (c) how many seeds sprout
40. 40.🧺 Do we need a balloon for making butter? (a) needed (b) not needed

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids