Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 663 · 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.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) yes, all of it (c) it turns to sugar (d) no, salt passes through
2. 2.True or false: moong seeds is not needed for sprouting seeds. (a) False (b) True
3. 3.🛟 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
4. 4.🧺 Which of these is needed for making butter? (a) a battery cell (b) turmeric powder (c) cold water to rinse (d) a magnet
5. 5.🪴 Which part of a plant does this job: hold up the leaves? (a) flower (b) leaves (c) roots (d) stem
6. 6.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a battery cell (b) a balloon (c) sugar (d) a small bottle
7. 7.🛟 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
8. 8.True or false: a magnet is not needed for making butter. (a) False (b) True
9. 9.🍋 Which of these steps is a job for an adult? (a) plugging in the iron (b) dipping the cotton bud (c) reading the message (d) writing the message
10. 10.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) a small bowl (c) white paper (d) a magnet
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the number of drops
12. 12.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the same cotton bud (b) the iron setting (c) how dark the writing is (d) the kind of juice
13. 13.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) hot (c) salty (d) clearer
14. 14.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) a magnet (c) a tray for spills (d) a funnel or spoon
15. 15.🛟 Why is a plastic jar a good choice for shaking? (a) it will not break (b) it is magnetic (c) it is heavier (d) it is hotter
16. 16.⚖️ 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 change it (c) we keep it the same
17. 17.🫗 How do we separate sugar from sugar water? (a) evaporating (b) sieving (c) handpicking (d) filtering
18. 18.🧺 Which of these is not needed for the yeast balloon? (a) dry yeast (b) sugar (c) a battery cell (d) warm water
19. 19.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
20. 20.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the colour we see (c) the liquid we test
22. 22.⚖️ 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
23. 23.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) white paper (b) lemon juice (c) yeast (d) an adult with an iron
24. 24.True or false: a balloon is needed for sprouting seeds. (a) True (b) False
25. 25.🧺 Do we need a balloon for the secret lemon message? (a) needed (b) not needed
26. 26.True or false: sugar is needed for the fizzy balloon. (a) True (b) False
27. 27.🍋 Which of these steps is a job a child can do? (a) cutting the lemon (b) ironing the paper (c) plugging in the iron (d) writing the message
28. 28.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
29. 29.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) no, never (b) they turn to stones (c) they melt (d) yes, they sprout
30. 30.🌱 Which of these does not sprout? (a) seeds on dry cotton (b) wet seeds by a window (c) seeds on wet cotton (d) wet seeds in the dark
31. 31.🌱 Which of these is needed for a seed to sprout? (a) sunlight (b) salt (c) warmth (d) soil
32. 32.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) turmeric powder (b) an adult with an iron (c) a small bowl (d) a cotton bud
33. 33.🧺 Which of these is not needed for the fizzy balloon? (a) a balloon (b) baking soda (c) vinegar (d) a mirror
34. 34.True or false: seeds on wet cotton sprouts in a few days. (a) False (b) True
35. 35.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) the kind of balloon (b) spoons of baking soda (c) size of the balloon
36. 36.🧺 Do we need yeast for sprouting seeds? (a) needed (b) not needed
37. 37.🌱 What comes out of a moong seed first when it sprouts? (a) a thorn (b) a flower (c) a tiny root (d) a fruit
38. 38.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a few days (b) cotton wool (c) a mirror (d) moong seeds
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
40. 40.🧈 Which of these is a change that cannot be undone? (a) browning lemon ink (b) freezing water (c) folding paper (d) melting butter

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