Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 268 · 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.True or false: carry water upward is a job of the stem. (a) True (b) False
2. 2.🧺 Which of these is needed for the secret lemon message? (a) a mirror (b) an adult with an iron (c) yeast (d) a magnet
3. 3.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) soap solution (c) a battery cell (d) a dropper or spoon
4. 4.🔮 The fizzing stops after a while. Why? (a) the gas froze (b) the balloon got cold (c) the bottle got tired (d) an ingredient ran out
5. 5.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the amount of vinegar is kept the same. (a) False (b) True
6. 6.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) hot (d) clearer
7. 7.🫧 Which of these is a base? (a) baking soda water (b) sugar water (c) vinegar (d) salt water
8. 8.🎈 Why does the balloon blow up? (a) the bottle shrinks (b) vinegar is hot (c) outside air gets in (d) gas is made inside
9. 9.🫧 Which of these is neutral? (a) sugar water (b) baking soda water (c) vinegar (d) curd
10. 10.🧺 Do we need turmeric powder for the secret lemon message? (a) needed (b) not needed
11. 11.🌱 Which of these does not sprout? (a) wet seeds by a window (b) wet seeds in the dark (c) seeds in the freezer (d) seeds on wet cotton
12. 12.🔮 Predict: seeds on wet cotton are kept in the freezer. What happens? (a) they do not sprout (b) they sprout faster (c) they glow (d) they grow fruit
13. 13.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) dry yeast (c) warm water (d) a paper clip
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a magnet (c) muddy water (d) a funnel
15. 15.🫗 Which of these is done by handpicking? (a) small stones from dal (b) husk from rice grain (c) mud from water (d) chaff from wheat grain
16. 16.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) seal it in a glass jar (c) shake it near your face (d) keep it away from eyes
17. 17.🛟 How should the plastic bag be tied around the branch? (a) as tight as possible (b) with a hot glue gun (c) gently, not too tight (d) with sharp wire
18. 18.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) it shrinks to nothing (b) it turns to bread (c) the balloon is smaller (d) the balloon is bigger
19. 19.🔍 Which is the odd one out? (a) dissolving salt (b) milk turning to curd (c) browning lemon ink (d) baking a cake
20. 20.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) sand and pebbles (c) a balloon (d) a clean glass
21. 21.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the amount of cream is kept the same. (a) False (b) True
22. 22.True or false: small pebbles dissolves in water. (a) False (b) True
23. 23.🍞 Why do we add sugar to the yeast? (a) to make it heavy (b) to make it sweet (c) it is food for yeast (d) to colour it
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) water (d) a comb
25. 25.🧺 Which of these is not needed for the leafy bag test? (a) a clear plastic bag (b) sunlight (c) a potted plant (d) a battery cell
26. 26.True or false: time is something yeast does not need. (a) True (b) False
27. 27.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) lemon juice
29. 29.🍋 What colour does the lemon writing turn when an adult warms it? (a) green (b) white (c) brown (d) blue
30. 30.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
32. 32.🧺 Do we need a battery cell for the leafy bag test? (a) needed (b) not needed
33. 33.True or false: orange juice is an acid. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) time (b) vinegar (c) warm water (d) sugar
35. 35.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a few days (b) cotton wool (c) a mirror (d) a small bowl
36. 36.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the amount of vinegar (b) spoons of baking soda (c) the same bottle (d) size of the balloon
37. 37.🔮 Predict: the adult irons for only one second. What happens? (a) writing turns green (b) the paper floats (c) writing stays faint (d) it gets darker
38. 38.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a battery cell (c) muddy water (d) a clean glass
39. 39.🔍 Which is the odd one out? (a) salt (b) sugar (c) a magnet (d) vinegar
40. 40.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a seed (b) baking soda (c) a funnel or spoon (d) a balloon

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