Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 915 · 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.🛟 How should the plastic bag be tied around the branch? (a) gently, not too tight (b) with sharp wire (c) as tight as possible (d) with a hot glue gun
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) False (b) True
3. 3.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
4. 4.⚖️ 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) sun or shade (b) the size of the plant (c) the kind of plant (d) amount of water drops
5. 5.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a magnet (c) cotton or cloth (d) muddy water
6. 6.🧺 Which of these is not needed for the fizzy balloon? (a) a tray for spills (b) baking soda (c) a comb (d) an empty bottle
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) False (b) True
8. 8.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of sugar”? (a) we keep it the same (b) we measure it (c) we change it
9. 9.True or false: air is not needed for a seed to sprout. (a) True (b) False
10. 10.🧺 Which of these is needed for making butter? (a) cold water to rinse (b) a balloon (c) a magnet (d) a mirror
11. 11.🛟 The water for the yeast should be ___. (a) very salty (b) boiling hot (c) warm, not hot (d) ice cold
12. 12.🛟 Why must the jar lid be screwed on tightly? (a) so air gets out (b) so it turns yellow (c) so cream does not spill (d) so it gets hot
13. 13.🍋 Which of these steps is a job for an adult? (a) reading the message (b) cutting the lemon (c) writing the message (d) dipping the cotton bud
14. 14.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) mix bathroom cleaners (d) sniff each bottle hard
15. 15.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) it grows faster (b) it turns to sugar (c) it glows (d) the yeast is killed
16. 16.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) the same jar (b) how hard we shake (c) the amount of cream (d) the cream temperature
17. 17.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the amount of cream”? (a) we measure it (b) we keep it the same (c) we change it
18. 18.🫧 Is curd an acid, a base or neutral? (a) a base (b) an acid (c) neutral
19. 19.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the same cotton bud (b) the kind of juice (c) how dark the writing is (d) the same paper
20. 20.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) wet or dry cotton (b) how many seeds sprout (c) the kind of seeds
21. 21.🍞 Does yeast need time to make gas? (a) yeast does not need it (b) yeast needs it
22. 22.🫧 Which of these is a base? (a) baking soda water (b) salt water (c) tamarind water (d) vinegar
23. 23.🧺 Do we need yeast for the leafy bag test? (a) not needed (b) needed
24. 24.🔍 Which is the odd one out? (a) a magnet (b) salt (c) vinegar (d) sugar
25. 25.True or false: fresh cream is not needed for making butter. (a) True (b) False
26. 26.True or false: a magnet is something yeast does not need. (a) False (b) True
27. 27.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
28. 28.🔮 Predict: sprouts grow in the dark for a week. What colour are their leaves? (a) pale yellow (b) bright red (c) blue (d) dark green
29. 29.🧺 Do we need a cotton bud for the secret lemon message? (a) not needed (b) needed
30. 30.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is the one thing we change. (a) False (b) True
31. 31.True or false: water is needed for the turmeric test. (a) False (b) True
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see
33. 33.🔍 Which is the odd one out? (a) air (b) salt (c) warmth (d) water
34. 34.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) yeast (c) soap solution (d) a balloon
35. 35.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same bowls”? (a) we measure it (b) we change it (c) we keep it the same
36. 36.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) the same bottle (b) the kind of balloon (c) size of the balloon (d) spoons of baking soda
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) soap solution (c) a battery cell (d) a dropper or spoon
38. 38.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny stars (c) tiny spheres (d) tiny triangles
39. 39.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) the water temperature (b) the amount of yeast (c) size of the balloon
40. 40.True or false: sugar is needed for the fizzy balloon. (a) True (b) False

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