Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 749 · 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 part of a plant does this job: take in water from soil? (a) flower (b) stem (c) roots (d) leaves
2. 2.🌱 Which of these is not needed for a seed to sprout? (a) water (b) air (c) salt (d) warmth
3. 3.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it turns blue (b) it wilts and droops (c) it flowers more (d) it grows faster
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.🔍 Which is the odd one out? (a) water (b) sugar (c) sunlight (d) soil
6. 6.🛟 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
7. 7.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) the balloon is smaller (b) it turns to bread (c) it shrinks to nothing (d) the balloon is bigger
8. 8.🛟 What should you do if vinegar splashes in your eye? (a) rinse with clean water (b) rub it hard (c) add baking soda (d) ignore it
9. 9.True or false: sugar is something yeast needs. (a) True (b) False
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a clean glass (c) cotton or cloth (d) a magnet
11. 11.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a balloon (c) a funnel (d) muddy water
12. 12.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it dissolves (c) it sinks to the bottom (d) it floats on top
13. 13.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the same jar”? (a) we keep it the same (b) we measure it (c) we change it
14. 14.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the kind of plant”? (a) we change it (b) we keep it the same (c) we measure it
15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a battery cell (c) white paper strips (d) turmeric powder
16. 16.True or false: milk turning to curd is a change that can be undone. (a) False (b) True
17. 17.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
18. 18.True or false: a magnet is needed for the secret lemon message. (a) True (b) False
19. 19.🍋 Why can’t you see the lemon writing once it dries? (a) the ink is magnetic (b) it turned into air (c) dry juice is see-through (d) the paper ate it
20. 20.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it bursts at once (b) it turns yellow (c) it grows much faster (d) it grows very little
21. 21.🧺 Which of these is needed for the leafy bag test? (a) yeast (b) vinegar (c) a potted plant (d) turmeric powder
22. 22.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) moong seeds (b) cotton wool (c) a mirror (d) a few days
23. 23.⚖️ 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 measure it (c) we change it
24. 24.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) seal it in a glass jar (c) keep it away from eyes (d) shake it near your face
25. 25.🫧 Which of these is neutral? (a) orange juice (b) tamarind water (c) curd (d) salt water
26. 26.🧈 What is the watery liquid left after the butter forms? (a) oil (b) buttermilk (c) vinegar (d) honey
27. 27.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) how dark the writing is (b) the iron setting (c) the kind of juice
28. 28.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is what we measure. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) baking soda (b) sugar (c) food colour (d) sand
30. 30.⚖️ 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 size of the plant (b) sun or shade (c) the time we wait (d) amount of water drops
31. 31.🧺 Do we need yeast for making butter? (a) not needed (b) needed
32. 32.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) not needed (b) needed
33. 33.🍋 Secret message: who does this step — dipping the cotton bud? (a) a child can do it (b) an adult does it
34. 34.🪴 Which of these is a job of the roots? (a) carry water upward (b) take in water from soil (c) make food in sunlight (d) hold up the leaves
35. 35.🧺 Which of these is needed for the secret lemon message? (a) a cotton bud (b) yeast (c) a magnet (d) a balloon
36. 36.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) the kind of juice (b) how dark the writing is (c) the same cotton bud
37. 37.⚖️ Fair test — do seeds need water to sprout? True or false: the kind of seeds is the one thing we change. (a) True (b) False
38. 38.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) a jar with a tight lid (c) a timer (d) a balloon
39. 39.🧺 Which of these is needed for the secret lemon message? (a) a magnet (b) a battery cell (c) lemon juice (d) yeast
40. 40.⚖️ 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 keep it the same (c) we change it

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