Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 353 · 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 — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) a magnet (d) turmeric powder
3. 3.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) sunlight (b) air (c) soil (d) sugar
5. 5.🔍 Which is the odd one out? (a) glucose powder (b) baking soda (c) sugar (d) chalk powder
6. 6.True or false: warm water is needed for the yeast balloon. (a) False (b) True
7. 7.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) a balloon (c) a magnet (d) warm water
8. 8.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same cotton bud”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.🛟 Where should you keep the crystal dish while it dries? (a) in a busy doorway (b) safe from small children (c) on the edge of a table (d) next to the baby
10. 10.📘 Leaves have tiny holes that let out water vapour. What are they called? (a) roots (b) veins (c) stomata (d) petals
11. 11.🧺 Which of these is not needed for the fizzy balloon? (a) an empty bottle (b) baking soda (c) a tray for spills (d) a mirror
12. 12.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it grows faster (b) it turns blue (c) it flowers more (d) it wilts and droops
13. 13.🧺 Do we need turmeric powder for making butter? (a) not needed (b) needed
14. 14.🍞 Which of these is something yeast needs? (a) salt (b) sugar (c) a magnet (d) sunlight
15. 15.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, always (c) no, germs may stay (d) yes, if it is clear
16. 16.🍋 Which of these steps is a job a child can do? (a) letting the paper dry (b) plugging in the iron (c) putting the iron away (d) ironing the paper
17. 17.🔍 Which is the odd one out? (a) sawdust (b) baking soda (c) sugar (d) table salt
18. 18.🍞 Does yeast need a magnet to make gas? (a) yeast does not need it (b) yeast needs it
19. 19.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) plain water (c) lemon juice (d) salt water
20. 20.🧈 Which of these is a change that cannot be undone? (a) browning lemon ink (b) melting ice (c) folding paper (d) melting butter
21. 21.⚖️ 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) size of the balloon (d) the same bottle
22. 22.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) size of the balloon (b) the kind of balloon (c) spoons of baking soda (d) the same bottle
23. 23.True or false: sugar is not needed for the fizzy balloon. (a) True (b) False
24. 24.🧺 Which of these is needed for making butter? (a) a magnet (b) yeast (c) a timer (d) a balloon
25. 25.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) germs are invisible (d) clear water is hot
26. 26.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the iron setting is what we measure. (a) False (b) True
27. 27.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) turmeric powder (b) cold water to rinse (c) a bowl (d) a timer
28. 28.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) lemon juice
29. 29.🧺 Do we need a balloon for the fizzy balloon? (a) not needed (b) needed
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.🍞 Which of these is something yeast needs? (a) salt (b) vinegar (c) sunlight (d) time
32. 32.🫧 What do you see when baking soda meets vinegar? (a) it glows in the dark (b) lots of fizzy bubbles (c) it turns to ice (d) nothing at all
33. 33.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) tea stays behind (c) leaves stay behind (d) leaves pass through
34. 34.🔮 Predict: you stop shaking after only one minute. What do you have? (a) still runny cream (b) ghee (c) butter lumps (d) cheese
35. 35.True or false: soap solution is neutral. (a) False (b) True
36. 36.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
37. 37.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) a comb (c) vinegar (d) baking soda
38. 38.⚖️ 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 keep it the same (b) we measure it (c) we change it
39. 39.🧺 Which of these is not needed for the leafy bag test? (a) a few hours (b) a clear plastic bag (c) a potted plant (d) a mirror
40. 40.🫗 Which of these is done by sieving? (a) mud from water (b) bran from wheat flour (c) salt from sea water (d) tea leaves from tea

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