Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 30 · 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 turns turmeric paper reddish-brown? (a) vinegar (b) sugar water (c) soap solution (d) lemon juice
2. 2.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) water (b) a few days (c) moong seeds (d) yeast
3. 3.True or false: yeast is needed for making butter. (a) True (b) False
4. 4.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
5. 5.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: how hard we shake is the one thing we change. (a) True (b) False
6. 6.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same cotton bud”? (a) we change it (b) we keep it the same (c) we measure it
7. 7.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a spoon (c) a balloon (d) salt
8. 8.🛟 What should you do if vinegar splashes in your eye? (a) rinse with clean water (b) add baking soda (c) ignore it (d) rub it hard
9. 9.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) cotton wool (b) a mirror (c) moong seeds (d) a small bowl
10. 10.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is kept the same. (a) True (b) False
11. 11.🛟 Why must children keep their fingers away from the iron? (a) it is sticky (b) it is cold (c) it is magnetic (d) it can burn skin
12. 12.🫗 Which of these is done by evaporating? (a) husk from rice grain (b) tea leaves from tea (c) sugar from sugar water (d) gravel from fine sand
13. 13.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we change it (b) we keep it the same (c) we measure it
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same muddy water (b) the filter material (c) how clear the water is
15. 15.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) crystals grow faster (c) it turns sweet (d) few or no crystals
16. 16.🫧 Which of these is an acid? (a) sugar water (b) detergent water (c) tamarind water (d) baking soda water
17. 17.🪴 Which part of a plant does this job: carry water upward? (a) roots (b) stem (c) leaves (d) flower
18. 18.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) eat a few to check (b) never put seeds in mouth (c) feed them to pets (d) throw them at friends
19. 19.🫗 Which of these is done by winnowing? (a) husk from rice grain (b) gravel from fine sand (c) sugar from sugar water (d) mud from water
20. 20.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the same kind of bag is kept the same. (a) False (b) True
21. 21.🍞 Where is yeast used in the kitchen? (a) to clean floors (b) to colour rice (c) to wash dishes (d) to make bread rise
22. 22.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) it turns to oil (c) it turns to butter (d) salt crystals form
23. 23.⚖️ Fair test — do seeds need water to sprout? True or false: the kind of seeds is kept the same. (a) False (b) True
24. 24.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) size of the balloon (b) the same bottle (c) spoons of baking soda (d) the amount of vinegar
25. 25.🧺 Which of these is not needed for the leafy bag test? (a) sunlight (b) a potted plant (c) a few hours (d) a battery cell
26. 26.🧺 Do we need lemon juice for the secret lemon message? (a) not needed (b) needed
27. 27.True or false: turmeric powder is not needed for the leafy bag test. (a) True (b) False
28. 28.🧺 Do we need turmeric powder for the secret lemon message? (a) needed (b) not needed
29. 29.🫧 Which of these is neutral? (a) tamarind water (b) baking soda water (c) lemon juice (d) plain water
30. 30.True or false: letting the paper dry is a job a child can do. (a) True (b) False
31. 31.🧈 Which of these is a change that can be undone? (a) melting ice (b) milk turning to curd (c) browning lemon ink (d) baking a cake
32. 32.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
33. 33.🧺 Which of these is needed for the leafy bag test? (a) sunlight (b) a mirror (c) vinegar (d) turmeric powder
34. 34.🫗 Which of these is done by sieving? (a) bad grains from rice (b) small stones from dal (c) mud from water (d) gravel from fine sand
35. 35.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) use only kitchen items (d) mix bathroom cleaners
36. 36.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) a mirror (c) dry yeast (d) a small bottle
37. 37.🪴 Where did the water inside the bag come from? (a) the leaves (b) the plastic (c) the rain (d) the rubber band
38. 38.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) a seed (c) an empty bottle (d) baking soda
39. 39.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) germs are invisible (c) clear water is sweet (d) clear water is salty
40. 40.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) a mirror (c) a few hours (d) a potted plant

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