Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 804 · 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 cotton or cloth for the muddy water filter? (a) needed (b) not needed
2. 2.True or false: warm water is something yeast needs. (a) False (b) True
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) False (b) True
4. 4.True or false: a balloon is not needed for making butter. (a) True (b) False
5. 5.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a bowl (b) a magnet (c) cold water to rinse (d) a jar with a tight lid
6. 6.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
7. 7.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a comb (c) soap solution (d) a dropper or spoon
8. 8.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) the cool cloudy day (b) both the same (c) neither of them (d) the hot sunny day
9. 9.🧺 Do we need a small bottle for the yeast balloon? (a) needed (b) not needed
10. 10.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a funnel or spoon (b) sugar (c) a tray for spills (d) a balloon
11. 11.🧺 Which of these is needed for sprouting seeds? (a) a balloon (b) moong seeds (c) a battery cell (d) a mirror
12. 12.🧺 Which of these is needed for the fizzy balloon? (a) sugar (b) a comb (c) a magnet (d) a balloon
13. 13.🧺 Which of these is not needed for the fizzy balloon? (a) an empty bottle (b) baking soda (c) a balloon (d) a comb
14. 14.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a balloon (b) an adult with an iron (c) lemon juice (d) white paper
15. 15.🫧 Which of these is neutral? (a) lemon juice (b) tamarind water (c) salt water (d) curd
16. 16.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
17. 17.🧺 Which of these is not needed for the yeast balloon? (a) dry yeast (b) a balloon (c) a comb (d) warm water
18. 18.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.🔮 Predict: sprouts grow in the dark for a week. What colour are their leaves? (a) bright red (b) pale yellow (c) blue (d) dark green
20. 20.🧺 Which of these is needed for the secret lemon message? (a) turmeric powder (b) white paper (c) a magnet (d) a balloon
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we measure it (b) we keep it the same (c) we change it
22. 22.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) days to see crystals (b) the amount of salt (c) sunny or shady place
23. 23.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the size of the plant”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “how dark the writing is”? (a) we keep it the same (b) we change it (c) we measure it
25. 25.🧈 Before the butter appears, what does the cream turn into? (a) thick whipped cream (b) clear water (c) ice (d) powder
26. 26.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) a bowl (c) a mirror (d) a timer
27. 27.🧺 Do we need lemon juice for the secret lemon message? (a) needed (b) not needed
28. 28.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) keep it away from eyes (c) shake it near your face (d) seal it in a glass jar
29. 29.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same paper”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same glass (b) how clear the water is (c) the filter material (d) the amount poured
31. 31.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) a few hours (c) a rubber band (d) yeast
32. 32.True or false: vinegar is not needed for the leafy bag test. (a) True (b) False
33. 33.True or false: wet seeds by a window does not sprout. (a) False (b) True
34. 34.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
36. 36.🛟 Why must children keep their fingers away from the iron? (a) it is cold (b) it is sticky (c) it is magnetic (d) it can burn skin
37. 37.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
38. 38.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) a white party dress (d) your best clothes
39. 39.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows much faster (b) it bursts at once (c) it turns yellow (d) it grows very little
40. 40.🧈 Which of these is a change that cannot be undone? (a) cooking an egg (b) melting ice (c) freezing water (d) melting butter

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