Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 506 · 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.🎈 Why does the balloon blow up? (a) vinegar is hot (b) gas is made inside (c) the bottle shrinks (d) outside air gets in
2. 2.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) days to see crystals (b) the kind of salt (c) the same dish (d) sunny or shady place
3. 3.🧺 Do we need a small bottle for the yeast balloon? (a) needed (b) not needed
4. 4.⚖️ Fair test — do seeds need water to sprout? True or false: the kind of seeds is the one thing we change. (a) True (b) False
5. 5.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the kind of balloon (b) the same bottle (c) spoons of baking soda (d) the amount of vinegar
6. 6.📘 What is yeast? (a) a kind of stone (b) a kind of sugar (c) a tiny living fungus (d) a kind of salt
7. 7.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) a base (c) neutral
8. 8.📘 Leaves have tiny holes that let out water vapour. What are they called? (a) petals (b) stomata (c) veins (d) roots
9. 9.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) warm water (c) salt (d) a spoon
10. 10.🫗 How do we separate husk from rice grain? (a) evaporating (b) handpicking (c) sieving (d) winnowing
11. 11.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) an adult with an iron (c) a small bowl (d) a mirror
12. 12.🛟 How should the plastic bag be tied around the branch? (a) with sharp wire (b) with a hot glue gun (c) gently, not too tight (d) as tight as possible
13. 13.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
14. 14.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a magnet (b) moong seeds (c) water (d) cotton wool
15. 15.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
16. 16.🧈 Why does shaking cream make butter? (a) fat bits stick together (b) the jar adds butter (c) shaking adds salt (d) the lid is warm
17. 17.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) detergent water (c) salt water (d) sugar water
18. 18.True or false: bran from wheat flour is done by handpicking. (a) False (b) True
19. 19.🌱 Which of these is not needed for a seed to sprout? (a) water (b) air (c) warmth (d) sugar
20. 20.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the cream temperature is kept the same. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) cooking oil (b) glucose powder (c) baking soda (d) sugar
22. 22.True or false: a mirror is not needed for the leafy bag test. (a) False (b) True
23. 23.🧺 Which of these is needed for the fizzy balloon? (a) a comb (b) a magnet (c) a tray for spills (d) a mirror
24. 24.🍞 Why does yeast work slowly in cold water? (a) cold water is heavy (b) cold makes it pink (c) cold kills sugar (d) cold slows yeast down
25. 25.True or false: turmeric powder is not needed for the secret lemon message. (a) False (b) True
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the colour we see (c) the liquid we test
27. 27.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) use only kitchen items (d) sniff each bottle hard
28. 28.🧺 Which of these is needed for making butter? (a) a magnet (b) a battery cell (c) a jar with a tight lid (d) a balloon
29. 29.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) eat a few to check (b) feed them to pets (c) never put seeds in mouth (d) throw them at friends
30. 30.🌱 Will these sprout: wet seeds by a window? (a) does not sprout (b) sprouts
31. 31.True or false: sugar from sugar water is done by evaporating. (a) True (b) False
32. 32.🧺 Which of these is not needed for making butter? (a) a timer (b) cold water to rinse (c) a magnet (d) fresh cream
33. 33.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
34. 34.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the water temperature is the one thing we change. (a) True (b) False
35. 35.🫧 Which of these is a base? (a) salt water (b) baking soda water (c) tamarind water (d) curd
36. 36.🧺 Which of these is needed for the leafy bag test? (a) sunlight (b) turmeric powder (c) a mirror (d) a magnet
37. 37.🧺 Do we need a few hours for the leafy bag test? (a) needed (b) not needed
38. 38.🧺 Which of these is needed for the fizzy balloon? (a) a mirror (b) baking soda (c) a seed (d) a magnet
39. 39.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the kind of juice”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.True or false: a battery cell is not needed for the leafy bag test. (a) True (b) False

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