Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 311 · 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.True or false: turmeric powder is not needed for the muddy water filter. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) reading the message (b) putting the iron away (c) letting the paper dry (d) dipping the cotton bud
3. 3.True or false: air is needed for a seed to sprout. (a) False (b) True
4. 4.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a comb (c) a battery cell (d) white paper strips
5. 5.🧺 Which of these is needed for the secret lemon message? (a) a balloon (b) a cotton bud (c) a battery cell (d) a magnet
6. 6.🔍 Which is the odd one out? (a) lemon juice (b) vinegar (c) plain water (d) soap solution
7. 7.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is what we measure? (a) the kind of juice (b) the iron setting (c) the ironing time (d) how dark the writing is
8. 8.🛟 After the yeast experiment, what should you do with the mixture? (a) pour it down the sink (b) throw it at a wall (c) put it in your mouth (d) keep it for a month
9. 9.🧺 Do we need a comb for the yeast balloon? (a) needed (b) not needed
10. 10.🛟 The water for the yeast should be ___. (a) ice cold (b) very salty (c) warm, not hot (d) boiling hot
11. 11.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
12. 12.True or false: a balloon is needed for sprouting seeds. (a) False (b) True
13. 13.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same cotton bud is the one thing we change. (a) False (b) True
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) lemon juice (c) soap solution (d) water
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the amount poured (b) how clear the water is (c) the filter material (d) the same muddy water
16. 16.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
17. 17.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is kept the same. (a) False (b) True
18. 18.⚖️ 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) the same kind of bag (b) the size of the plant (c) amount of water drops (d) the time we wait
19. 19.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is what we measure. (a) False (b) True
20. 20.🧺 Which of these is needed for the leafy bag test? (a) a magnet (b) a clear plastic bag (c) turmeric powder (d) a battery cell
21. 21.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your best clothes (d) your school uniform
22. 22.True or false: a battery cell is not needed for the secret lemon message. (a) True (b) False
23. 23.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it makes salt (b) it takes much longer (c) it turns pink (d) it is much faster
24. 24.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) turmeric powder (c) a clean glass (d) a funnel
25. 25.🫗 How do we separate bad grains from rice? (a) filtering (b) winnowing (c) evaporating (d) handpicking
26. 26.True or false: water is needed for sprouting seeds. (a) False (b) True
27. 27.🧺 Which of these is needed for the leafy bag test? (a) a magnet (b) a battery cell (c) a rubber band (d) vinegar
28. 28.🫧 Which of these is a base? (a) detergent water (b) orange juice (c) sugar water (d) plain water
29. 29.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it turns yellow (b) it grows much faster (c) it bursts at once (d) it grows very little
30. 30.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) cold water to rinse (b) fresh cream (c) a bowl (d) turmeric powder
31. 31.🧺 Which of these is needed for growing salt crystals? (a) yeast (b) a battery cell (c) a shallow dish (d) a balloon
32. 32.⚖️ 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 change it (c) we keep it the same
33. 33.True or false: ironing the paper is a job a child can do. (a) False (b) True
34. 34.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it turns blue (d) it stays yellow
35. 35.🔍 Which is the odd one out? (a) sugar water (b) plain water (c) vinegar (d) salt water
36. 36.True or false: turmeric powder is needed for the leafy bag test. (a) True (b) False
37. 37.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
38. 38.🧺 Do we need vinegar for the leafy bag test? (a) needed (b) not needed
39. 39.True or false: fresh cream is needed for making butter. (a) True (b) False
40. 40.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much more water (b) exactly the same (c) much less water (d) it fills with soil

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