Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 986 · 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.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) hot (c) muddier (d) salty
2. 2.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the cream temperature”? (a) we measure it (b) we change it (c) we keep it the same
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) True (b) False
4. 4.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns red (c) it turns black (d) it turns blue
5. 5.🍋 Secret message: who does this step — cutting the lemon? (a) an adult does it (b) a child can do it
6. 6.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the kind of juice”? (a) we measure it (b) we keep it the same (c) we change it
7. 7.True or false: a cotton bud is not needed for the secret lemon message. (a) True (b) False
8. 8.⚖️ 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 change it (b) we keep it the same (c) we measure it
9. 9.True or false: sugar is something yeast does not need. (a) True (b) False
10. 10.🔍 Which is the odd one out? (a) orange juice (b) lemon juice (c) soap solution (d) vinegar
11. 11.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it bursts at once (b) it grows very little (c) it turns yellow (d) it grows much faster
12. 12.🍞 Does yeast need sunlight to make gas? (a) yeast does not need it (b) yeast needs it
13. 13.🧺 Which of these is needed for the muddy water filter? (a) a funnel (b) a mirror (c) a battery cell (d) turmeric powder
14. 14.🧺 Do we need sunlight for the leafy bag test? (a) not needed (b) needed
15. 15.🔍 Which is the odd one out? (a) vinegar (b) sunlight (c) salt (d) sugar
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the light we look in (c) the liquid we test (d) the colour we see
17. 17.🛟 After the yeast experiment, what should you do with the mixture? (a) throw it at a wall (b) put it in your mouth (c) pour it down the sink (d) keep it for a month
18. 18.🫗 Which of these is done by handpicking? (a) husk from rice grain (b) bran from wheat flour (c) tea leaves from tea (d) small stones from dal
19. 19.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they freeze (b) they react (c) they become magnets (d) they float apart
20. 20.🛟 Which safety rule fits the fizzy balloon experiment? (a) seal it in a glass jar (b) shake it near your face (c) put it in your mouth (d) keep it away from eyes
21. 21.True or false: a bowl is not needed for making butter. (a) True (b) False
22. 22.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “size of the balloon”? (a) we change it (b) we measure it (c) we keep it the same
23. 23.🧺 Which of these is not needed for making butter? (a) cold water to rinse (b) a timer (c) a magnet (d) a jar with a tight lid
24. 24.🧺 Which of these is needed for the secret lemon message? (a) a magnet (b) a mirror (c) turmeric powder (d) an adult with an iron
25. 25.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it grows faster (b) it turns blue (c) it flowers more (d) it wilts and droops
26. 26.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is what we measure? (a) the same paper (b) how dark the writing is (c) the ironing time (d) the kind of juice
27. 27.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) it turns to sugar (b) it glows (c) it grows faster (d) the yeast is killed
28. 28.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a comb (c) a magnet (d) water
29. 29.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the iron setting (b) the ironing time (c) the same paper (d) the kind of juice
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we keep it the same (b) we measure it (c) we change it
31. 31.🌱 Which of these is needed for a seed to sprout? (a) sunlight (b) sugar (c) air (d) salt
32. 32.📘 Leaves have tiny holes that let out water vapour. What are they called? (a) stomata (b) petals (c) veins (d) roots
33. 33.True or false: a magnet is needed for the secret lemon message. (a) True (b) False
34. 34.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) water (b) moong seeds (c) turmeric powder (d) a few days
35. 35.True or false: soap solution is needed for the turmeric test. (a) False (b) True
36. 36.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
37. 37.True or false: letting the paper dry is a job a child can do. (a) True (b) False
38. 38.🫧 Which of these is an acid? (a) salt water (b) vinegar (c) baking soda water (d) sugar water
39. 39.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) sip each liquid (d) use only kitchen items
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we measure it (c) we keep it the same

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