Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 529 · 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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the colour we see (c) the liquid we test (d) the turmeric paper
2. 2.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
3. 3.🧺 Do we need water for sprouting seeds? (a) needed (b) not needed
4. 4.True or false: vinegar is a base. (a) False (b) True
5. 5.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it stays yellow (c) it turns black (d) it turns red
6. 6.True or false: a magnet is needed for the secret lemon message. (a) True (b) False
7. 7.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) cooking an egg (c) melting ice (d) dissolving salt
8. 8.🧺 Do we need lemon juice for the secret lemon message? (a) not needed (b) needed
9. 9.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it wilts and droops (b) it grows faster (c) it flowers more (d) it turns blue
10. 10.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the kind of juice”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.🧺 Which of these is needed for the leafy bag test? (a) a mirror (b) turmeric powder (c) a magnet (d) a few hours
12. 12.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a prism (c) a magnet (d) a pulley
13. 13.🍋 Which of these steps is a job for an adult? (a) dipping the cotton bud (b) reading the message (c) writing the message (d) putting the iron away
14. 14.🎈 Why does the balloon blow up? (a) outside air gets in (b) gas is made inside (c) vinegar is hot (d) the bottle shrinks
15. 15.True or false: sunlight is needed for a seed to sprout. (a) True (b) False
16. 16.🧺 Which of these is not needed for the fizzy balloon? (a) a funnel or spoon (b) vinegar (c) a tray for spills (d) sugar
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) the same funnel (c) the same muddy water (d) how clear the water is
18. 18.🧺 Which of these is not needed for the leafy bag test? (a) a few hours (b) a potted plant (c) a rubber band (d) turmeric powder
19. 19.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we measure it (c) we change it
20. 20.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sand (c) it turns to sugar (d) no, salt passes through
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the liquid we test (c) the number of drops (d) the colour we see
22. 22.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a funnel (c) a clean glass (d) a magnet
23. 23.True or false: sugar water is a base. (a) False (b) True
24. 24.True or false: salt is something yeast needs. (a) True (b) False
25. 25.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) spoons of baking soda (b) the kind of balloon (c) size of the balloon (d) the amount of vinegar
26. 26.🍋 Which of these steps is a job for an adult? (a) reading the message (b) ironing the paper (c) writing the message (d) dipping the cotton bud
27. 27.True or false: a small bowl is needed for sprouting seeds. (a) True (b) False
28. 28.True or false: dry yeast is needed for the yeast balloon. (a) True (b) False
29. 29.True or false: water is not needed for the turmeric test. (a) True (b) False
30. 30.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
31. 31.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) vinegar (c) a seed (d) an empty bottle
32. 32.🫗 Which of these is done by handpicking? (a) chaff from wheat grain (b) small stones from dal (c) gravel from fine sand (d) sugar from sugar water
33. 33.🧺 Do we need a mirror for the leafy bag test? (a) needed (b) not needed
34. 34.🔍 Which is the odd one out? (a) lemon juice (b) sugar water (c) vinegar (d) baking soda water
35. 35.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a battery cell (c) turmeric powder (d) a magnet
36. 36.🧈 Which tool is used in many Indian homes to churn curd into butter? (a) a sieve (b) a pressure cooker (c) a mathani (churner) (d) a rolling pin
37. 37.🫧 Which of these is neutral? (a) vinegar (b) tamarind water (c) curd (d) plain water
38. 38.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) amount of water drops (b) the size of the plant (c) sun or shade (d) the kind of plant
39. 39.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the cream temperature is kept the same. (a) False (b) True
40. 40.🫧 What do you see when baking soda meets vinegar? (a) lots of fizzy bubbles (b) it turns to ice (c) nothing at all (d) it glows in the dark

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