Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 540 · 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 is the odd one out? (a) rusting iron (b) baking a cake (c) browning lemon ink (d) freezing water
2. 2.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a funnel or spoon (b) baking soda (c) a balloon (d) a battery cell
3. 3.True or false: make food in sunlight is a job of the flower. (a) True (b) False
4. 4.True or false: vinegar is neutral. (a) False (b) True
5. 5.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) oxygen (b) carbon dioxide (c) hydrogen (d) helium
6. 6.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is the one thing we change. (a) True (b) False
7. 7.True or false: a battery cell is needed for the secret lemon message. (a) False (b) True
8. 8.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) warm water (c) sugar (d) a paper clip
9. 9.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) a mirror (c) cold water to rinse (d) fresh cream
10. 10.🛟 Why must children keep their fingers away from the iron? (a) it is sticky (b) it is magnetic (c) it can burn skin (d) it is cold
11. 11.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the kind of plant is kept the same. (a) True (b) False
12. 12.🧺 Do we need water for sprouting seeds? (a) needed (b) not needed
13. 13.True or false: water is not needed for a seed to sprout. (a) True (b) False
14. 14.🔮 Predict: seeds on wet cotton are kept in the freezer. What happens? (a) they grow fruit (b) they glow (c) they do not sprout (d) they sprout faster
15. 15.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a mirror (b) vinegar (c) baking soda (d) a funnel or spoon
16. 16.🫧 Which of these is an acid? (a) lemon juice (b) soap solution (c) detergent water (d) baking soda water
17. 17.🧈 Which of these is a change that can be undone? (a) rusting iron (b) browning lemon ink (c) baking a cake (d) melting ice
18. 18.True or false: vinegar is needed for the fizzy balloon. (a) True (b) False
19. 19.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the same jar”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
21. 21.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it turns blue (d) it stays yellow
22. 22.📘 Leaves have tiny holes that let out water vapour. What are they called? (a) roots (b) stomata (c) petals (d) veins
23. 23.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is what we measure? (a) the iron setting (b) the kind of juice (c) the same paper (d) how dark the writing is
24. 24.True or false: vinegar is something yeast does not need. (a) True (b) False
25. 25.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) bad grains from rice (c) mud from water (d) sugar from sugar water
26. 26.True or false: soap solution is an acid. (a) False (b) True
27. 27.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) a potted plant (c) a few hours (d) turmeric powder
28. 28.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the iron setting”? (a) we keep it the same (b) we change it (c) we measure it
29. 29.🧺 Which of these is needed for the secret lemon message? (a) yeast (b) an adult with an iron (c) a magnet (d) a balloon
30. 30.🍋 Which of these steps is a job a child can do? (a) plugging in the iron (b) writing the message (c) cutting the lemon (d) ironing the paper
31. 31.🧺 Which of these is not needed for making butter? (a) cold water to rinse (b) a balloon (c) fresh cream (d) a bowl
32. 32.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) both stay behind (c) leaves pass through (d) tea stays behind
33. 33.🫗 Which of these is done by evaporating? (a) bran from wheat flour (b) salt from sea water (c) husk from rice grain (d) bad grains from rice
34. 34.🌱 Is sunlight needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
35. 35.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) a magnet (d) a piece of string
36. 36.True or false: turmeric powder is not needed for the leafy bag test. (a) False (b) True
37. 37.🧺 Which of these is not needed for the leafy bag test? (a) a clear plastic bag (b) vinegar (c) sunlight (d) a few hours
38. 38.🧺 Do we need a few hours for the leafy bag test? (a) not needed (b) needed
39. 39.🛟 What should you do if vinegar splashes in your eye? (a) ignore it (b) rinse with clean water (c) add baking soda (d) rub it hard
40. 40.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid

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