Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 367 · 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.⚖️ 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
2. 2.🧺 Which of these is not needed for making butter? (a) a timer (b) a bowl (c) a mirror (d) fresh cream
3. 3.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of yeast is kept the same. (a) True (b) False
4. 4.True or false: hold the plant in soil is a job of the stem. (a) False (b) True
5. 5.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
6. 6.🟡 Which of these keeps turmeric yellow? (a) tamarind water (b) baking soda water (c) soap solution (d) detergent water
7. 7.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
8. 8.🌱 Will these sprout: wet seeds in the dark? (a) does not sprout (b) sprouts
9. 9.🔍 Which is the odd one out? (a) rusting iron (b) browning lemon ink (c) cooking an egg (d) melting ice
10. 10.🫗 How do we separate chaff from wheat grain? (a) sieving (b) handpicking (c) winnowing (d) filtering
11. 11.🍋 Why can’t you see the lemon writing once it dries? (a) the paper ate it (b) it turned into air (c) dry juice is see-through (d) the ink is magnetic
12. 12.True or false: tamarind water is an acid. (a) True (b) False
13. 13.True or false: cutting the lemon is a job for an adult. (a) False (b) True
14. 14.🫧 Which of these is a base? (a) detergent water (b) curd (c) tamarind water (d) sugar water
15. 15.True or false: boiled seeds does not sprout. (a) False (b) True
16. 16.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) baking a cake (c) milk turning to curd (d) freezing water
17. 17.🧺 Which of these is not needed for making butter? (a) a balloon (b) fresh cream (c) a timer (d) cold water to rinse
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the number of drops (c) the liquid we test (d) the colour we see
19. 19.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
20. 20.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a mirror (b) a rubber band (c) a clear plastic bag (d) sunlight
21. 21.True or false: a small bowl is needed for the secret lemon message. (a) True (b) False
22. 22.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we measure it (c) we change it
23. 23.🍋 Secret message: who does this step — plugging in the iron? (a) a child can do it (b) an adult does it
24. 24.🫧 Which of these is an acid? (a) sugar water (b) soap solution (c) baking soda water (d) orange juice
25. 25.🧺 Do we need white paper for the secret lemon message? (a) not needed (b) needed
26. 26.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “time to make butter”? (a) we keep it the same (b) we change it (c) we measure it
27. 27.🛟 Why must children keep their fingers away from the iron? (a) it is magnetic (b) it is sticky (c) it is cold (d) it can burn skin
28. 28.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) turmeric powder (c) a magnet (d) a funnel
29. 29.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it turns yellow (b) it bursts at once (c) it grows very little (d) it grows much faster
30. 30.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same cotton bud is the one thing we change. (a) False (b) True
31. 31.🧺 Which of these is needed for the secret lemon message? (a) a balloon (b) yeast (c) a mirror (d) lemon juice
32. 32.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the kind of plant”? (a) we change it (b) we measure it (c) we keep it the same
33. 33.🧈 What is the watery liquid left after the butter forms? (a) honey (b) oil (c) vinegar (d) buttermilk
34. 34.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
35. 35.True or false: wet seeds in the dark sprouts in a few days. (a) True (b) False
36. 36.🫗 Which of these is done by filtering? (a) mud from water (b) chaff from wheat grain (c) gravel from fine sand (d) small stones from dal
37. 37.⚖️ 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 kind of juice (d) the same cotton bud
38. 38.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same bowls”? (a) we keep it the same (b) we change it (c) we measure it
39. 39.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) warm water (c) yeast (d) salt
40. 40.True or false: white paper is not needed for the secret lemon message. (a) True (b) False

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