Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 831 · 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: yeast is needed for growing salt crystals. (a) False (b) True
2. 2.🔍 Which is the odd one out? (a) writing the message (b) dipping the cotton bud (c) letting the paper dry (d) ironing the paper
3. 3.🍞 Which of these is something yeast needs? (a) sunlight (b) time (c) vinegar (d) a magnet
4. 4.True or false: turmeric powder is needed for sprouting seeds. (a) True (b) False
5. 5.🌱 Which of these sprouts in a few days? (a) seeds in the freezer (b) boiled seeds (c) wet seeds by a window (d) seeds on dry cotton
6. 6.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of water”? (a) we keep it the same (b) we measure it (c) we change it
7. 7.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: how hard we shake is kept the same. (a) True (b) False
8. 8.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
9. 9.True or false: lemon juice is a base. (a) True (b) False
10. 10.🧈 Why does shaking cream make butter? (a) the jar adds butter (b) the lid is warm (c) fat bits stick together (d) shaking adds salt
11. 11.🔮 Predict: you use plain water instead of vinegar. What happens? (a) it turns to honey (b) a huge eruption (c) the balloon bursts (d) very little fizzing
12. 12.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is what we measure? (a) the cream temperature (b) the amount of cream (c) time to make butter (d) how hard we shake
13. 13.True or false: browning lemon ink is a change that can be undone. (a) False (b) True
14. 14.🔍 Which is the odd one out? (a) food colour (b) glucose powder (c) chalk powder (d) table salt
15. 15.True or false: seeds on dry cotton sprouts in a few days. (a) True (b) False
16. 16.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
17. 17.🧺 Do we need an adult with an iron for the secret lemon message? (a) needed (b) not needed
18. 18.True or false: water is needed for the turmeric test. (a) True (b) False
19. 19.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) no, salt passes through (c) yes, all of it (d) it turns to sand
20. 20.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the kind of balloon (b) spoons of baking soda (c) the same bottle (d) size of the balloon
21. 21.🔍 Which is the odd one out? (a) chalk powder (b) sand (c) table salt (d) cooking oil
22. 22.🛟 Which safety rule fits the fizzy balloon experiment? (a) shake it near your face (b) put it in your mouth (c) seal it in a glass jar (d) keep it away from eyes
23. 23.🧺 Do we need white paper for the secret lemon message? (a) not needed (b) needed
24. 24.True or false: sunlight is needed for the leafy bag test. (a) False (b) True
25. 25.🧺 Do we need baking soda for the fizzy balloon? (a) needed (b) not needed
26. 26.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns yellow again (c) it turns darker red (d) it turns blue
27. 27.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) warm water (c) a magnet (d) a balloon
28. 28.🛟 How should the plastic bag be tied around the branch? (a) with sharp wire (b) as tight as possible (c) gently, not too tight (d) with a hot glue gun
29. 29.🧺 Which of these is not needed for the secret lemon message? (a) white paper (b) a cotton bud (c) an adult with an iron (d) yeast
30. 30.🔍 Which is the odd one out? (a) ironing the paper (b) putting the iron away (c) plugging in the iron (d) dipping the cotton bud
31. 31.🔍 Which is the odd one out? (a) vinegar (b) time (c) salt (d) sunlight
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) white paper strips (d) a balloon
33. 33.🧈 Which tool is used in many Indian homes to churn curd into butter? (a) a mathani (churner) (b) a sieve (c) a pressure cooker (d) a rolling pin
34. 34.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the size of the plant is what we measure. (a) True (b) False
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.🌱 Is air needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
37. 37.🛟 What should you do after handling muddy water? (a) lick your fingers (b) nothing is needed (c) wipe hands on face (d) wash hands afterwards
38. 38.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the same jar is what we measure. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) cutting the lemon (b) reading the message (c) dipping the cotton bud (d) letting the paper dry
40. 40.🫗 How do we separate bad grains from rice? (a) evaporating (b) filtering (c) handpicking (d) sieving

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