Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 257 · 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 needed for a seed to sprout? (a) air (b) sunlight (c) salt (d) soil
2. 2.🧺 Which of these is not needed for the fizzy balloon? (a) a funnel or spoon (b) a tray for spills (c) baking soda (d) a comb
3. 3.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a tray for spills (b) a funnel or spoon (c) a comb (d) an empty bottle
5. 5.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
6. 6.True or false: an adult with an iron is needed for the secret lemon message. (a) False (b) True
7. 7.🧺 Which of these is needed for the secret lemon message? (a) a balloon (b) a mirror (c) a magnet (d) white paper
8. 8.⚖️ 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) the kind of plant (d) the same kind of bag
9. 9.True or false: a balloon is not needed for growing salt crystals. (a) False (b) True
10. 10.🎈 What blows up the balloon in the yeast experiment? (a) air from outside (b) carbon dioxide gas (c) steam (d) smoke
11. 11.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the kind of plant”? (a) we keep it the same (b) we measure it (c) we change it
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) False (b) True
13. 13.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same bowls”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.🫧 Which of these is an acid? (a) plain water (b) orange juice (c) soap solution (d) sugar water
15. 15.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) cotton or cloth (c) sand and pebbles (d) muddy water
18. 18.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) more butter forms (b) no butter forms (c) it turns to cheese (d) it turns blue
19. 19.True or false: yeast is not needed for sprouting seeds. (a) True (b) False
20. 20.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a balloon (b) a shallow dish (c) a piece of string (d) salt
21. 21.🧺 Which of these is needed for making butter? (a) a mirror (b) a bowl (c) a balloon (d) yeast
22. 22.🌱 Which of these sprouts in a few days? (a) seeds on dry cotton (b) wet seeds by a window (c) boiled seeds (d) seeds in the freezer
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “how clear the water is”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) germs are invisible (c) clear water is salty (d) clear water is sweet
25. 25.True or false: warm water is something yeast needs. (a) True (b) False
26. 26.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
27. 27.🫗 Which of these is done by winnowing? (a) tea leaves from tea (b) salt from sea water (c) husk from rice grain (d) sugar from sugar water
28. 28.🧺 Which of these is needed for the leafy bag test? (a) yeast (b) a magnet (c) a rubber band (d) turmeric powder
29. 29.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows much faster (b) it grows very little (c) it bursts at once (d) it turns yellow
30. 30.True or false: turmeric powder is needed for making butter. (a) True (b) False
31. 31.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a battery cell (b) a bowl (c) cold water to rinse (d) fresh cream
32. 32.True or false: a mirror is not needed for growing salt crystals. (a) True (b) False
33. 33.True or false: hold the plant in soil is a job of the leaves. (a) False (b) True
34. 34.🧺 Which of these is not needed for the yeast balloon? (a) a balloon (b) dry yeast (c) a small bottle (d) a comb
35. 35.🧺 Do we need a mirror for making butter? (a) needed (b) not needed
36. 36.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) white paper (b) lemon juice (c) a battery cell (d) a small bowl
37. 37.True or false: dry yeast is not needed for the yeast balloon. (a) True (b) False
38. 38.⚖️ 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) True (b) False
39. 39.🍋 Which of these steps is a job a child can do? (a) ironing the paper (b) putting the iron away (c) cutting the lemon (d) reading the message
40. 40.True or false: bad grains from rice is done by handpicking. (a) False (b) True

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