Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 886 · 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.🔮 Predict: you stop shaking after only one minute. What do you have? (a) still runny cream (b) cheese (c) ghee (d) butter lumps
2. 2.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the ironing time is what we measure. (a) True (b) False
3. 3.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: sunny or shady place is kept the same. (a) False (b) True
4. 4.🧺 Do we need cold water to rinse for making butter? (a) not needed (b) needed
5. 5.🪴 Which part of a plant does this job: take in water from soil? (a) flower (b) roots (c) leaves (d) stem
6. 6.🧺 Do we need a mirror for sprouting seeds? (a) not needed (b) needed
7. 7.🍞 Which of these is something yeast needs? (a) salt (b) a magnet (c) time (d) sunlight
8. 8.⚖️ Fair test — do seeds need water to sprout? Which of these is what we measure? (a) the kind of seeds (b) wet or dry cotton (c) how many seeds sprout (d) the same place
9. 9.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
10. 10.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a funnel or spoon (b) baking soda (c) a mirror (d) a balloon
11. 11.True or false: table salt does not dissolve in water. (a) False (b) True
12. 12.🍞 Does yeast need vinegar to make gas? (a) yeast does not need it (b) yeast needs it
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the light we look in (c) the liquid we test (d) the colour we see
14. 14.🔮 Predict: you cover the dish so no water can escape. What happens? (a) few or no crystals (b) it turns sweet (c) crystals grow faster (d) it fizzes
15. 15.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “how dark the writing is”? (a) we change it (b) we keep it the same (c) we measure it
16. 16.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the same bottle (b) spoons of baking soda (c) size of the balloon (d) the amount of vinegar
17. 17.⚖️ 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) False (b) True
18. 18.True or false: hold up the leaves is a job of the roots. (a) True (b) False
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) how clear the water is (b) the filter material (c) the amount poured (d) the same funnel
20. 20.🧺 Which of these is not needed for the muddy water filter? (a) a balloon (b) sand and pebbles (c) cotton or cloth (d) muddy water
21. 21.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) the cool cloudy day (b) neither of them (c) the hot sunny day (d) both the same
22. 22.🫗 Which of these is done by winnowing? (a) sugar from sugar water (b) mud from water (c) salt from sea water (d) chaff from wheat grain
23. 23.True or false: yeast is needed for the muddy water filter. (a) False (b) True
24. 24.🍋 Secret message: who does this step — cutting the lemon? (a) a child can do it (b) an adult does it
25. 25.🫧 Which of these is an acid? (a) plain water (b) tamarind water (c) baking soda water (d) soap solution
26. 26.🧺 Do we need a magnet for the yeast balloon? (a) not needed (b) needed
27. 27.True or false: orange juice is a base. (a) True (b) False
28. 28.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) wet or dry cotton (b) the kind of seeds (c) how many seeds sprout
29. 29.🎈 Why does the balloon blow up? (a) outside air gets in (b) vinegar is hot (c) gas is made inside (d) the bottle shrinks
30. 30.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) vinegar (c) a few hours (d) a clear plastic bag
31. 31.🧺 Do we need yeast for making butter? (a) needed (b) not needed
32. 32.🍞 Which of these is something yeast needs? (a) salt (b) a magnet (c) vinegar (d) warm water
33. 33.🍋 Which of these steps is a job for an adult? (a) dipping the cotton bud (b) letting the paper dry (c) writing the message (d) putting the iron away
34. 34.🧈 Can this change be undone: baking a cake? (a) can be undone (b) cannot be undone
35. 35.🫗 How do we separate small stones from dal? (a) sieving (b) winnowing (c) handpicking (d) filtering
36. 36.True or false: reading the message is a job a child can do. (a) True (b) False
37. 37.🎈 What blows up the balloon in the yeast experiment? (a) air from outside (b) smoke (c) carbon dioxide gas (d) steam
38. 38.🧈 Which of these is a change that cannot be undone? (a) baking a cake (b) melting ice (c) folding paper (d) freezing water
39. 39.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it stays yellow (d) it turns red
40. 40.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same bowls”? (a) we change it (b) we keep it the same (c) we measure it

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