Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 19 · 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.🧺 Which of these is needed for the yeast balloon? (a) sugar (b) turmeric powder (c) a magnet (d) a comb
2. 2.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) use only kitchen items (d) sniff each bottle hard
3. 3.🛟 Which safety rule fits the fizzy balloon experiment? (a) keep it away from eyes (b) put it in your mouth (c) seal it in a glass jar (d) shake it near your face
4. 4.⚖️ 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) False (b) True
5. 5.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
6. 6.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) a mirror (d) a dropper or spoon
7. 7.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) the same bottle (b) size of the balloon (c) the kind of balloon (d) the amount of vinegar
8. 8.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the same kind of bag is what we measure. (a) True (b) False
9. 9.🧂 Does baking soda dissolve in water? (a) dissolves in water (b) does not dissolve
10. 10.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much more water (b) exactly the same (c) it fills with soil (d) much less water
11. 11.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a balloon (c) turmeric powder (d) muddy water
12. 12.🧺 Do we need a battery cell for sprouting seeds? (a) not needed (b) needed
13. 13.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the same paper (b) the iron setting (c) the kind of juice (d) the ironing time
14. 14.🧺 Which of these is not needed for making butter? (a) a jar with a tight lid (b) fresh cream (c) yeast (d) a bowl
15. 15.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
16. 16.🛟 After the yeast experiment, what should you do with the mixture? (a) pour it down the sink (b) keep it for a month (c) put it in your mouth (d) throw it at a wall
17. 17.🛟 How should the plastic bag be tied around the branch? (a) with sharp wire (b) with a hot glue gun (c) as tight as possible (d) gently, not too tight
18. 18.🧺 Do we need a battery cell for the yeast balloon? (a) not needed (b) needed
19. 19.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) tamarind water (c) sugar water (d) soap solution
20. 20.🧺 Which of these is needed for the secret lemon message? (a) turmeric powder (b) a magnet (c) an adult with an iron (d) a balloon
21. 21.⚖️ Fair test — do seeds need water to sprout? What do we do with “wet or dry cotton”? (a) we change it (b) we keep it the same (c) we measure it
22. 22.📘 Is the fizzing a sign that a new substance is made? (a) it is only melting (b) no, nothing changes (c) yes, a new gas forms (d) it is only dissolving
23. 23.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) sunlight (c) a magnet (d) a few hours
24. 24.🧺 Do we need moong seeds for sprouting seeds? (a) needed (b) not needed
25. 25.🛟 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
26. 26.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
27. 27.🧺 Which of these is not needed for the leafy bag test? (a) sunlight (b) a potted plant (c) a clear plastic bag (d) yeast
28. 28.🍞 Does yeast need warm water to make gas? (a) yeast does not need it (b) yeast needs it
29. 29.True or false: tea leaves from tea is done by filtering. (a) True (b) False
30. 30.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “time to make butter”? (a) we measure it (b) we keep it the same (c) we change it
31. 31.🧺 Do we need a magnet for the yeast balloon? (a) needed (b) not needed
32. 32.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
33. 33.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a balloon (b) lemon juice (c) a small bowl (d) an adult with an iron
34. 34.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it grows faster (b) it wilts and droops (c) it turns blue (d) it flowers more
35. 35.🍋 Which of these steps is a job a child can do? (a) dipping the cotton bud (b) ironing the paper (c) putting the iron away (d) cutting the lemon
36. 36.🫗 How do we separate bran from wheat flour? (a) evaporating (b) winnowing (c) sieving (d) handpicking
37. 37.🍋 What colour does the lemon writing turn when an adult warms it? (a) green (b) white (c) blue (d) brown
38. 38.🧺 Which of these is not needed for the secret lemon message? (a) a mirror (b) a small bowl (c) an adult with an iron (d) a cotton bud
39. 39.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a cotton bud (b) yeast (c) an adult with an iron (d) white paper
40. 40.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same paper”? (a) we measure it (b) we change it (c) we keep it the same

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