Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 341 · 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.True or false: letting the paper dry is a job a child can do. (a) False (b) True
2. 2.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) keep it away from eyes (c) shake it near your face (d) seal it in a glass jar
3. 3.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
4. 4.🫧 What do you see when baking soda meets vinegar? (a) nothing at all (b) it glows in the dark (c) it turns to ice (d) lots of fizzy bubbles
5. 5.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) size of the balloon (b) the water temperature (c) the amount of sugar
6. 6.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns blue (c) it turns red (d) it turns black
7. 7.🔍 Which is the odd one out? (a) orange juice (b) vinegar (c) plain water (d) curd
8. 8.🧈 Which of these is a change that cannot be undone? (a) folding paper (b) melting butter (c) melting ice (d) rusting iron
9. 9.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “size of the balloon”? (a) we keep it the same (b) we change it (c) we measure it
10. 10.🧺 Do we need white paper for the secret lemon message? (a) not needed (b) needed
11. 11.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) a tray for spills (c) baking soda (d) a seed
12. 12.🧺 Do we need a battery cell for making butter? (a) needed (b) not needed
13. 13.🧺 Do we need vinegar for the fizzy balloon? (a) not needed (b) needed
14. 14.🫗 How do we separate salt from sea water? (a) sieving (b) handpicking (c) filtering (d) evaporating
15. 15.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) a white party dress (d) an old shirt or apron
16. 16.🔮 Predict: you use plain water instead of vinegar. What happens? (a) it turns to honey (b) a huge eruption (c) very little fizzing (d) the balloon bursts
17. 17.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.🔮 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
19. 19.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
20. 20.True or false: rusting iron is a change that cannot be undone. (a) True (b) False
21. 21.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
22. 22.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the water temperature (b) the amount of sugar (c) the same bottles (d) the amount of water
23. 23.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) a balloon (c) a magnet (d) dry yeast
24. 24.🫧 Which of these is neutral? (a) tamarind water (b) vinegar (c) sugar water (d) lemon juice
25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a piece of string (c) a magnet (d) warm water
26. 26.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we keep it the same (c) we measure it
28. 28.🧺 Do we need fresh cream for making butter? (a) not needed (b) needed
29. 29.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
30. 30.🔍 Which is the odd one out? (a) sugar water (b) lemon juice (c) baking soda water (d) vinegar
31. 31.🧺 Do we need yeast for making butter? (a) not needed (b) needed
32. 32.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) turmeric powder (b) cold water to rinse (c) a bowl (d) a jar with a tight lid
33. 33.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) exactly the same (b) much more water (c) much less water (d) it fills with soil
34. 34.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) a small bottle (c) a balloon (d) a paper clip
35. 35.🛟 Why must the jar lid be screwed on tightly? (a) so cream does not spill (b) so air gets out (c) so it gets hot (d) so it turns yellow
36. 36.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a dropper or spoon (c) water (d) a battery cell
37. 37.🛟 Why is a plastic jar a good choice for shaking? (a) it is hotter (b) it is magnetic (c) it will not break (d) it is heavier
38. 38.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) white paper (b) a balloon (c) a cotton bud (d) a small bowl
39. 39.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “how hard we shake”? (a) we change it (b) we measure it (c) we keep it the same
40. 40.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed

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