Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 195 · 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 use plain water instead of vinegar. What happens? (a) a huge eruption (b) the balloon bursts (c) it turns to honey (d) very little fizzing
2. 2.🔮 Predict: sprouts grow in the dark for a week. What colour are their leaves? (a) pale yellow (b) blue (c) dark green (d) bright red
3. 3.🍋 Secret message: who does this step — plugging in the iron? (a) a child can do it (b) an adult does it
4. 4.🛟 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
5. 5.🍋 Which of these steps is a job a child can do? (a) cutting the lemon (b) ironing the paper (c) dipping the cotton bud (d) putting the iron away
6. 6.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much less water (b) much more water (c) it fills with soil (d) exactly the same
7. 7.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
8. 8.🔍 Which is the odd one out? (a) melting ice (b) dissolving salt (c) milk turning to curd (d) folding paper
9. 9.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) the same kind of bag (b) the size of the plant (c) the kind of plant (d) sun or shade
10. 10.True or false: a funnel or spoon is not needed for the fizzy balloon. (a) False (b) True
11. 11.🧺 Which of these is needed for the secret lemon message? (a) a mirror (b) a battery cell (c) a balloon (d) a cotton bud
12. 12.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
13. 13.🍞 Which of these is something yeast needs? (a) salt (b) sunlight (c) warm water (d) vinegar
14. 14.🪴 Which part of a plant does this job: take in water from soil? (a) leaves (b) stem (c) roots (d) flower
15. 15.True or false: bran from wheat flour is done by evaporating. (a) False (b) True
16. 16.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) eat a few to check (b) never put seeds in mouth (c) feed them to pets (d) throw them at friends
17. 17.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “how hard we shake”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: how hard we shake is the one thing we change. (a) False (b) True
19. 19.⚖️ 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
20. 20.🍋 Secret message: who does this step — ironing the paper? (a) an adult does it (b) a child can do it
21. 21.🧺 Which of these is needed for making butter? (a) yeast (b) a jar with a tight lid (c) turmeric powder (d) a balloon
22. 22.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
23. 23.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it takes much longer (b) it turns pink (c) it makes salt (d) it is much faster
24. 24.🧺 Which of these is needed for the leafy bag test? (a) turmeric powder (b) a battery cell (c) a potted plant (d) a magnet
25. 25.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.🌱 Will these sprout: wet seeds in the dark? (a) sprouts (b) does not sprout
27. 27.🛟 Who should use the hot iron in the secret message experiment? (a) the youngest child (b) any child (c) only an adult (d) whoever is fastest
28. 28.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of yeast is the one thing we change. (a) True (b) False
29. 29.🫗 Which of these is done by winnowing? (a) husk from rice grain (b) tea leaves from tea (c) gravel from fine sand (d) small stones from dal
30. 30.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) almost nothing (b) blue words (c) a rainbow (d) dark brown words
31. 31.🫗 How do we separate small stones from dal? (a) evaporating (b) sieving (c) winnowing (d) handpicking
32. 32.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it flowers more (b) it grows faster (c) it wilts and droops (d) it turns blue
33. 33.🪴 Which of these is a job of the leaves? (a) hold the plant in soil (b) take in water from soil (c) make seeds (d) make food in sunlight
34. 34.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the kind of juice (b) the same cotton bud (c) the iron setting (d) how dark the writing is
35. 35.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the ironing time”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) True (b) False
37. 37.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: sun or shade is what we measure. (a) True (b) False
38. 38.True or false: sugar is something yeast does not need. (a) True (b) False
39. 39.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a small bowl (b) cotton wool (c) moong seeds (d) a balloon
40. 40.🔍 Which is the odd one out? (a) sugar water (b) baking soda water (c) plain water (d) salt water

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