Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 266 · 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.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: amount of water drops is the one thing we change. (a) True (b) False
2. 2.True or false: a jar with a tight lid is not needed for making butter. (a) True (b) False
3. 3.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same cotton bud”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.True or false: a funnel or spoon is not needed for the fizzy balloon. (a) False (b) True
5. 5.🧺 Which of these is not needed for the secret lemon message? (a) a magnet (b) lemon juice (c) a small bowl (d) an adult with an iron
6. 6.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) hydrogen (b) oxygen (c) helium (d) carbon dioxide
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) the same muddy water (c) how clear the water is
8. 8.True or false: cold water to rinse is not needed for making butter. (a) False (b) True
9. 9.True or false: a few days is needed for sprouting seeds. (a) False (b) True
10. 10.🛟 Which safety rule fits the fizzy balloon experiment? (a) shake it near your face (b) put it in your mouth (c) seal it in a glass jar (d) keep it away from eyes
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) False (b) True
12. 12.🍞 Which of these is something yeast needs? (a) a magnet (b) vinegar (c) sunlight (d) warm water
13. 13.🍋 Which of these steps is a job for an adult? (a) dipping the cotton bud (b) letting the paper dry (c) ironing the paper (d) reading the message
14. 14.🔍 Which is the odd one out? (a) sugar (b) salt (c) warm water (d) time
15. 15.🧂 Which of these does not dissolve in water? (a) table salt (b) cooking oil (c) glucose powder (d) sugar
16. 16.🧺 Do we need a balloon for making butter? (a) needed (b) not needed
17. 17.🔍 Which is the odd one out? (a) sawdust (b) sand (c) table salt (d) chalk powder
18. 18.🔍 Which is the odd one out? (a) soap solution (b) tamarind water (c) detergent water (d) baking soda water
19. 19.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
20. 20.🫗 Which of these is done by sieving? (a) salt from sea water (b) bran from wheat flour (c) mud from water (d) husk from rice grain
21. 21.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) cotton or cloth (c) yeast (d) a funnel
22. 22.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is what we measure. (a) True (b) False
23. 23.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a battery cell (b) warm water (c) a balloon (d) a small bottle
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
25. 25.🛟 Why must a plastic bag never go over anyone’s head? (a) it is too big (b) it can block breathing (c) it changes colour (d) it gets wet
26. 26.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we change it (c) we measure it
27. 27.True or false: a comb is needed for the fizzy balloon. (a) False (b) True
28. 28.🫧 Which of these is an acid? (a) plain water (b) soap solution (c) vinegar (d) sugar water
29. 29.🧺 Do we need a small bowl for the secret lemon message? (a) needed (b) not needed
30. 30.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a bowl (b) a jar with a tight lid (c) a magnet (d) a timer
31. 31.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the size of the plant”? (a) we keep it the same (b) we measure it (c) we change it
32. 32.🧺 Do we need turmeric powder for the secret lemon message? (a) needed (b) not needed
33. 33.🧺 Do we need white paper for the secret lemon message? (a) not needed (b) needed
34. 34.⚖️ Fair test — do seeds need water to sprout? What do we do with “the kind of seeds”? (a) we change it (b) we measure it (c) we keep it the same
35. 35.🧺 Which of these is not needed for the fizzy balloon? (a) a tray for spills (b) baking soda (c) sugar (d) a funnel or spoon
36. 36.True or false: soap solution is an acid. (a) False (b) True
37. 37.🫧 Which of these is a base? (a) lemon juice (b) tamarind water (c) soap solution (d) orange juice
38. 38.🛟 Who should use the hot iron in the secret message experiment? (a) the youngest child (b) whoever is fastest (c) any child (d) only an adult
39. 39.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
40. 40.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) sip each liquid (d) use only kitchen items

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