Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 545 · 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 is the odd one out? (a) vinegar (b) time (c) sunlight (d) a magnet
2. 2.🫗 Which of these is done by filtering? (a) bran from wheat flour (b) small stones from dal (c) chaff from wheat grain (d) tea leaves from tea
3. 3.True or false: vinegar is something yeast needs. (a) True (b) False
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a mirror (c) lemon juice (d) soap solution
5. 5.🔍 Which is the odd one out? (a) putting the iron away (b) reading the message (c) cutting the lemon (d) ironing the paper
6. 6.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
7. 7.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) hot (c) muddier (d) clearer
8. 8.True or false: fresh cream is not needed for making butter. (a) True (b) False
9. 9.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
10. 10.🌱 Which of these does not sprout? (a) wet seeds by a window (b) wet seeds in the dark (c) boiled seeds (d) seeds on wet cotton
11. 11.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) warm water (c) a piece of string (d) a spoon
12. 12.🧺 Which of these is needed for the muddy water filter? (a) a funnel (b) a magnet (c) a balloon (d) turmeric powder
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is kept the same. (a) True (b) False
14. 14.🫗 Which of these is done by filtering? (a) salt from sea water (b) sugar from sugar water (c) gravel from fine sand (d) mud from water
15. 15.⚖️ 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 what we measure. (a) True (b) False
16. 16.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “how hard we shake”? (a) we keep it the same (b) we change it (c) we measure it
17. 17.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) there is no change (b) it grows bigger (c) it shrinks (d) it turns blue
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.🔮 Can the brown writing go back to being invisible? (a) yes, in the dark (b) yes, if cooled (c) no, it stays brown (d) yes, if shaken
20. 20.🛟 How should the plastic bag be tied around the branch? (a) as tight as possible (b) with sharp wire (c) gently, not too tight (d) with a hot glue gun
21. 21.True or false: white paper is not needed for the secret lemon message. (a) True (b) False
22. 22.🧺 Which of these is needed for the leafy bag test? (a) a magnet (b) turmeric powder (c) yeast (d) a few hours
23. 23.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the same kind of bag is what we measure. (a) True (b) False
24. 24.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) neither of them (b) the cool cloudy day (c) both the same (d) the hot sunny day
25. 25.🧺 Do we need turmeric powder for the leafy bag test? (a) needed (b) not needed
26. 26.🔍 Which is the odd one out? (a) sawdust (b) sand (c) chalk powder (d) table salt
27. 27.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) turmeric powder (b) warm water (c) a balloon (d) dry yeast
28. 28.🔍 Which is the odd one out? (a) time (b) sunlight (c) warm water (d) sugar
29. 29.🧺 Do we need a magnet for making butter? (a) needed (b) not needed
30. 30.True or false: a small bowl is needed for sprouting seeds. (a) True (b) False
31. 31.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) turmeric powder (c) a shallow dish (d) a magnet
32. 32.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a balloon (b) a small bowl (c) white paper (d) an adult with an iron
33. 33.🧺 Which of these is not needed for the fizzy balloon? (a) sugar (b) a tray for spills (c) an empty bottle (d) baking soda
34. 34.🛟 Which safety rule fits the fizzy balloon experiment? (a) seal it in a glass jar (b) keep it away from eyes (c) shake it near your face (d) put it in your mouth
35. 35.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it stays yellow (c) reddish-brown (d) it turns blue
36. 36.🧺 Do we need lemon juice for the secret lemon message? (a) not needed (b) needed
37. 37.🍋 Which of these steps is a job for an adult? (a) ironing the paper (b) letting the paper dry (c) reading the message (d) dipping the cotton bud
38. 38.🧺 Do we need turmeric powder for the secret lemon message? (a) needed (b) not needed
39. 39.🧺 Which of these is not needed for the muddy water filter? (a) turmeric powder (b) a clean glass (c) cotton or cloth (d) a funnel
40. 40.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) mix bathroom cleaners (d) use only kitchen items

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids