Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 992 · 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 of these is done by handpicking? (a) salt from sea water (b) chaff from wheat grain (c) bad grains from rice (d) husk from rice grain
2. 2.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) melting ice (c) dissolving salt (d) rusting iron
3. 3.True or false: sugar does not dissolve in water. (a) False (b) True
4. 4.True or false: warmth is needed for a seed to sprout. (a) False (b) True
5. 5.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) cooking oil (b) chalk powder (c) food colour (d) sand
7. 7.🧺 Do we need turmeric powder for sprouting seeds? (a) not needed (b) needed
8. 8.🧺 Which of these is not needed for making butter? (a) a jar with a tight lid (b) a battery cell (c) a bowl (d) fresh cream
9. 9.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) cotton or cloth (c) a clean glass (d) a funnel
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a balloon (c) a clean glass (d) muddy water
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 turmeric paper
12. 12.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “amount of water drops”? (a) we keep it the same (b) we measure it (c) we change it
13. 13.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: how dark the writing is is the one thing we change. (a) False (b) True
14. 14.📘 Is the fizzing a sign that a new substance is made? (a) it is only melting (b) yes, a new gas forms (c) it is only dissolving (d) no, nothing changes
15. 15.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) neither of them (b) both the same (c) the hot sunny day (d) the cool cloudy day
16. 16.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
17. 17.🧺 Which of these is not needed for the turmeric test? (a) yeast (b) lemon juice (c) soap solution (d) a dropper or spoon
18. 18.🫧 Which of these is neutral? (a) tamarind water (b) plain water (c) soap solution (d) curd
19. 19.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a cotton bud (b) yeast (c) white paper (d) an adult with an iron
20. 20.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
21. 21.🧺 Which of these is not needed for the secret lemon message? (a) white paper (b) turmeric powder (c) a cotton bud (d) lemon juice
22. 22.True or false: chalk powder dissolves in water. (a) False (b) True
23. 23.🧂 Which of these does not dissolve in water? (a) food colour (b) baking soda (c) cooking oil (d) sugar
24. 24.🔮 Can the brown writing go back to being invisible? (a) yes, if shaken (b) yes, in the dark (c) yes, if cooled (d) no, it stays brown
25. 25.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the time we wait is kept the same. (a) False (b) True
26. 26.True or false: vinegar is needed for the fizzy balloon. (a) True (b) False
27. 27.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) leaves pass through (c) tea stays behind (d) both stay behind
28. 28.🧂 Does sand dissolve in water? (a) does not dissolve (b) dissolves in water
29. 29.⚖️ 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 keep it the same (c) we change it
30. 30.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
31. 31.🫧 Which of these is a base? (a) curd (b) orange juice (c) baking soda water (d) tamarind water
32. 32.🛟 How should the plastic bag be tied around the branch? (a) gently, not too tight (b) with a hot glue gun (c) as tight as possible (d) with sharp wire
33. 33.🧺 Which of these is not needed for making butter? (a) a bowl (b) fresh cream (c) a mirror (d) cold water to rinse
34. 34.🧺 Do we need turmeric powder for the yeast balloon? (a) needed (b) not needed
35. 35.⚖️ 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 same bottle (c) size of the balloon (d) the amount of vinegar
36. 36.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
37. 37.🧈 Why does shaking cream make butter? (a) the jar adds butter (b) fat bits stick together (c) the lid is warm (d) shaking adds salt
38. 38.🧺 Which of these is needed for the turmeric test? (a) yeast (b) soap solution (c) a magnet (d) a balloon
39. 39.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
40. 40.🔍 Which is the odd one out? (a) sugar (b) chalk powder (c) sand (d) small pebbles

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