Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 275 · 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.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a small bowl (b) lemon juice (c) white paper (d) a balloon
2. 2.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is what we measure. (a) False (b) True
3. 3.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) a timer (c) a mirror (d) fresh cream
4. 4.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
5. 5.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the filter traps mud (c) the water evaporates (d) the mud dissolves
6. 6.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is what we measure. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) putting the iron away (b) cutting the lemon (c) ironing the paper (d) letting the paper dry
8. 8.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) soap solution (c) water (d) yeast
9. 9.🫗 Which of these is done by sieving? (a) husk from rice grain (b) bran from wheat flour (c) salt from sea water (d) chaff from wheat grain
10. 10.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: time to make butter is what we measure. (a) True (b) False
11. 11.🍞 Where is yeast used in the kitchen? (a) to wash dishes (b) to colour rice (c) to make bread rise (d) to clean floors
12. 12.🔍 Which is the odd one out? (a) melting ice (b) rusting iron (c) cooking an egg (d) baking a cake
13. 13.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) sun or shade (b) the same kind of bag (c) amount of water drops
14. 14.True or false: a small bowl is not needed for sprouting seeds. (a) False (b) True
15. 15.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
16. 16.True or false: sawdust does not dissolve in water. (a) True (b) False
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the light we look in
18. 18.🍞 Does yeast need sunlight to make gas? (a) yeast does not need it (b) yeast needs it
19. 19.🔍 Which is the odd one out? (a) dipping the cotton bud (b) ironing the paper (c) cutting the lemon (d) plugging in the iron
20. 20.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) how many seeds sprout (b) the number of seeds (c) wet or dry cotton
21. 21.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it turns blue (b) there is no change (c) it grows bigger (d) it shrinks
22. 22.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a comb (b) vinegar (c) an empty bottle (d) a funnel or spoon
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a mirror (c) water (d) a dropper or spoon
24. 24.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) an indicator (c) a magnet (d) a pulley
25. 25.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a mirror (b) a few hours (c) a potted plant (d) sunlight
26. 26.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) both the same (b) the cool cloudy day (c) neither of them (d) the hot sunny day
27. 27.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) moong seeds (b) a few days (c) a battery cell (d) water
28. 28.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
29. 29.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
30. 30.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a funnel (c) a balloon (d) muddy water
31. 31.🧺 Which of these is not needed for the secret lemon message? (a) a balloon (b) lemon juice (c) a small bowl (d) a cotton bud
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we keep it the same (c) we change it
33. 33.🍞 Which of these is something yeast needs? (a) salt (b) sunlight (c) sugar (d) a magnet
34. 34.⚖️ Fair test — do seeds need water to sprout? True or false: how many seeds sprout is kept the same. (a) False (b) True
35. 35.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) hot (c) muddier (d) salty
36. 36.🫧 Which of these is neutral? (a) soap solution (b) vinegar (c) tamarind water (d) sugar water
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the turmeric paper (c) the number of drops (d) the liquid we test
38. 38.🛟 Which safety rule fits the fizzy balloon experiment? (a) keep it away from eyes (b) seal it in a glass jar (c) shake it near your face (d) put it in your mouth
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is the one thing we change. (a) False (b) True
40. 40.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny stars (b) tiny triangles (c) tiny spheres (d) tiny cubes

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