Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 612 · 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.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) cold water to rinse (c) a balloon (d) a timer
2. 2.True or false: fresh cream is needed for making butter. (a) True (b) False
3. 3.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the mud (c) nothing (d) the salt
4. 4.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) tamarind water (c) soap solution (d) detergent water
5. 5.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the light we look in (c) the liquid we test (d) the number of drops
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) how clear the water is (b) the same muddy water (c) the filter material
9. 9.🔍 Which is the odd one out? (a) curd (b) lemon juice (c) orange juice (d) baking soda water
10. 10.🧈 What is the watery liquid left after the butter forms? (a) honey (b) buttermilk (c) vinegar (d) oil
11. 11.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) it glows (b) it grows faster (c) it turns to sugar (d) the yeast is killed
12. 12.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
13. 13.🧺 Which of these is not needed for the yeast balloon? (a) a balloon (b) warm water (c) a small bottle (d) a comb
14. 14.True or false: dissolving salt is a change that can be undone. (a) False (b) True
15. 15.🍞 Why do we add sugar to the yeast? (a) it is food for yeast (b) to make it heavy (c) to make it sweet (d) to colour it
16. 16.⚖️ 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 water (c) size of the balloon
17. 17.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
18. 18.True or false: turmeric powder is not needed for making butter. (a) True (b) False
19. 19.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sip each liquid (d) sniff each bottle hard
20. 20.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) clear water is hot (d) germs are invisible
21. 21.🧺 Which of these is needed for the leafy bag test? (a) vinegar (b) a battery cell (c) a clear plastic bag (d) a mirror
22. 22.🔍 Which is the odd one out? (a) time (b) sugar (c) salt (d) warm water
23. 23.🔮 Can the brown writing go back to being invisible? (a) no, it stays brown (b) yes, if shaken (c) yes, in the dark (d) yes, if cooled
24. 24.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it shrinks (b) it grows bigger (c) it turns blue (d) there is no change
25. 25.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows very little (b) it grows much faster (c) it bursts at once (d) it turns yellow
26. 26.🧺 Do we need a mirror for making butter? (a) needed (b) not needed
27. 27.🛟 Who should use the hot iron in the secret message experiment? (a) the youngest child (b) only an adult (c) any child (d) whoever is fastest
28. 28.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
29. 29.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we keep it the same (b) we measure it (c) we change it
30. 30.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) it turns to oil (b) it turns to butter (c) sugar crystals form (d) salt crystals form
31. 31.⚖️ 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 change it (c) we keep it the same
32. 32.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) yeast (b) cotton wool (c) moong seeds (d) water
33. 33.True or false: a mirror is not needed for the yeast balloon. (a) False (b) True
34. 34.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) an empty bottle (b) baking soda (c) a tray for spills (d) sugar
35. 35.True or false: vinegar is something yeast does not need. (a) False (b) True
36. 36.🧺 Do we need a mirror for the yeast balloon? (a) needed (b) not needed
37. 37.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) exactly the same (b) it fills with soil (c) much more water (d) much less water
38. 38.🧺 Do we need a battery cell for making butter? (a) not needed (b) needed
39. 39.🌱 Which of these does not sprout? (a) seeds on wet cotton (b) wet seeds in the dark (c) wet seeds by a window (d) boiled seeds
40. 40.True or false: lemon juice is needed for the secret lemon message. (a) False (b) True

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