Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 688 · 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.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
2. 2.True or false: salt from sea water is done by evaporating. (a) False (b) True
3. 3.🌱 Which of these is not needed for a seed to sprout? (a) sunlight (b) water (c) air (d) warmth
4. 4.🌱 What comes out of a moong seed first when it sprouts? (a) a fruit (b) a tiny root (c) a thorn (d) a flower
5. 5.🧺 Which of these is not needed for the secret lemon message? (a) an adult with an iron (b) white paper (c) a magnet (d) lemon juice
6. 6.True or false: turmeric powder is needed for making butter. (a) False (b) True
7. 7.⚖️ 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 keep it the same (c) we measure it
8. 8.🧺 Do we need a potted plant for the leafy bag test? (a) not needed (b) needed
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
10. 10.⚖️ Fair test — do seeds need water to sprout? True or false: the same place is the one thing we change. (a) True (b) False
11. 11.🍋 Why can’t you see the lemon writing once it dries? (a) dry juice is see-through (b) the paper ate it (c) it turned into air (d) the ink is magnetic
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is the one thing we change. (a) False (b) True
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) False (b) True
14. 14.True or false: yeast is needed for the secret lemon message. (a) False (b) True
15. 15.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) yeast (b) a few hours (c) a potted plant (d) a clear plastic bag
16. 16.True or false: chaff from wheat grain is done by evaporating. (a) True (b) False
17. 17.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is the one thing we change. (a) True (b) False
18. 18.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
19. 19.🧈 Which of these is a change that can be undone? (a) melting ice (b) cooking an egg (c) rusting iron (d) browning lemon ink
20. 20.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) a funnel or spoon (c) a tray for spills (d) a battery cell
21. 21.True or false: time is something yeast needs. (a) False (b) True
22. 22.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
23. 23.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows much faster (b) it bursts at once (c) it grows very little (d) it turns yellow
24. 24.🫗 How do we separate mud from water? (a) evaporating (b) handpicking (c) winnowing (d) filtering
25. 25.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
26. 26.🫧 Which of these is neutral? (a) plain water (b) vinegar (c) baking soda water (d) soap solution
27. 27.🔮 Predict: seeds on wet cotton are kept in the freezer. What happens? (a) they glow (b) they sprout faster (c) they grow fruit (d) they do not sprout
28. 28.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is sweet (c) germs are invisible (d) clear water is salty
29. 29.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: sun or shade is the one thing we change. (a) True (b) False
30. 30.🛟 What should you do after handling muddy water? (a) nothing is needed (b) lick your fingers (c) wipe hands on face (d) wash hands afterwards
31. 31.🛟 Why must children keep their fingers away from the iron? (a) it can burn skin (b) it is magnetic (c) it is cold (d) it is sticky
32. 32.🌱 Which of these does not sprout? (a) seeds on wet cotton (b) wet seeds in the dark (c) boiled seeds (d) wet seeds by a window
33. 33.True or false: yeast is not needed for sprouting seeds. (a) True (b) False
34. 34.📘 Is the fizzing a sign that a new substance is made? (a) yes, a new gas forms (b) it is only dissolving (c) it is only melting (d) no, nothing changes
35. 35.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
36. 36.🧺 Do we need yeast for making butter? (a) needed (b) not needed
37. 37.🧺 Which of these is not needed for the secret lemon message? (a) white paper (b) lemon juice (c) a small bowl (d) yeast
38. 38.🧺 Which of these is needed for sprouting seeds? (a) a small bowl (b) a magnet (c) yeast (d) turmeric powder
39. 39.⚖️ 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 measure it (c) we keep it the same
40. 40.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is what we measure? (a) time to make butter (b) how hard we shake (c) the amount of cream (d) the same jar

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