Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 811 · 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 sprouts in a few days? (a) seeds on wet cotton (b) boiled seeds (c) seeds in the freezer (d) seeds on dry cotton
2. 2.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the iron setting (b) how dark the writing is (c) the kind of juice (d) the ironing time
3. 3.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) a base (c) neutral
4. 4.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it turns red (d) it stays yellow
5. 5.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) a balloon (c) a funnel or spoon (d) a magnet
6. 6.🧺 Which of these is needed for the fizzy balloon? (a) a mirror (b) vinegar (c) a magnet (d) a battery cell
7. 7.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) browning lemon ink (c) freezing water (d) folding paper
8. 8.True or false: sand and pebbles is not needed for the muddy water filter. (a) True (b) False
9. 9.True or false: warm water is not needed for the yeast balloon. (a) False (b) True
10. 10.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) it shrinks to nothing (b) the balloon is bigger (c) it turns to bread (d) the balloon is smaller
11. 11.🧺 Do we need sugar for the fizzy balloon? (a) not needed (b) needed
12. 12.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your school uniform (d) your best clothes
13. 13.True or false: sugar from sugar water is done by handpicking. (a) False (b) True
14. 14.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) how many seeds sprout (b) the number of seeds (c) wet or dry cotton
15. 15.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the same kind of bag”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.🛟 Why must the jar lid be screwed on tightly? (a) so it turns yellow (b) so it gets hot (c) so cream does not spill (d) so air gets out
17. 17.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) an empty bottle (c) a funnel or spoon (d) a seed
18. 18.🛟 How should the plastic bag be tied around the branch? (a) with a hot glue gun (b) as tight as possible (c) gently, not too tight (d) with sharp wire
19. 19.True or false: a comb is not needed for the turmeric test. (a) True (b) False
20. 20.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) needed (b) not needed
21. 21.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the time we wait is the one thing we change. (a) True (b) False
22. 22.🪴 Which of these is a job of the roots? (a) give out water vapour (b) hold up the leaves (c) take in water from soil (d) carry water upward
23. 23.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
24. 24.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we keep it the same (b) we change it (c) we measure it
25. 25.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) the amount of yeast (b) the water temperature (c) size of the balloon
26. 26.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
27. 27.🌱 Which of these sprouts in a few days? (a) boiled seeds (b) seeds on dry cotton (c) seeds in the freezer (d) wet seeds by a window
28. 28.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of yeast”? (a) we change it (b) we keep it the same (c) we measure it
29. 29.🧺 Do we need a balloon for sprouting seeds? (a) needed (b) not needed
30. 30.🔮 Predict: you stop shaking after only one minute. What do you have? (a) cheese (b) butter lumps (c) ghee (d) still runny cream
31. 31.🪴 Which part of a plant does this job: give out water vapour? (a) leaves (b) flower (c) roots (d) stem
32. 32.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
33. 33.True or false: yeast is needed for the leafy bag test. (a) False (b) True
34. 34.🍋 Which of these steps is a job a child can do? (a) putting the iron away (b) ironing the paper (c) plugging in the iron (d) dipping the cotton bud
35. 35.🛟 What should you do after touching soil or seeds? (a) wash your hands (b) lick your fingers (c) rub your eyes (d) skip washing
36. 36.🫗 How do we separate husk from rice grain? (a) evaporating (b) winnowing (c) sieving (d) handpicking
37. 37.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) size of the balloon (b) spoons of baking soda (c) the kind of balloon (d) the amount of vinegar
38. 38.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “how dark the writing is”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.🧺 Do we need a magnet for making butter? (a) needed (b) not needed
40. 40.True or false: a jar with a tight lid is needed for making butter. (a) False (b) True

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