Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 590 · 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.🧺 Do we need moong seeds for sprouting seeds? (a) needed (b) not needed
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the colour we see (c) the turmeric paper (d) the liquid we test
3. 3.🫗 How do we separate bran from wheat flour? (a) winnowing (b) sieving (c) evaporating (d) handpicking
4. 4.🧺 Do we need a paper clip for the yeast balloon? (a) needed (b) not needed
5. 5.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it turns to sand (c) it sinks to the bottom (d) it dissolves
6. 6.🫗 Which of these is done by evaporating? (a) small stones from dal (b) sugar from sugar water (c) chaff from wheat grain (d) bad grains from rice
7. 7.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) dry yeast (c) a balloon (d) a battery cell
8. 8.True or false: hold up the leaves is a job of the leaves. (a) True (b) False
9. 9.🧺 Do we need a battery cell for the yeast balloon? (a) not needed (b) needed
10. 10.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
11. 11.🔮 Predict: you use plain water instead of vinegar. What happens? (a) very little fizzing (b) the balloon bursts (c) it turns to honey (d) a huge eruption
12. 12.True or false: water is needed for sprouting seeds. (a) True (b) False
13. 13.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we change it (c) we measure it
15. 15.🌱 Which of these is needed for a seed to sprout? (a) soil (b) water (c) sugar (d) salt
16. 16.True or false: a battery cell is needed for the yeast balloon. (a) True (b) False
17. 17.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the size of the plant is kept the same. (a) False (b) True
18. 18.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a magnet (c) turmeric powder (d) a funnel
19. 19.🧺 Which of these is needed for the secret lemon message? (a) a small bowl (b) a mirror (c) a balloon (d) turmeric powder
20. 20.🧺 Do we need turmeric powder for the secret lemon message? (a) not needed (b) needed
21. 21.🍞 Why do we add sugar to the yeast? (a) it is food for yeast (b) to make it sweet (c) to make it heavy (d) to colour it
22. 22.True or false: yeast is needed for sprouting seeds. (a) False (b) True
23. 23.📘 The browning of lemon juice with heat is a ___ change. (a) chemical (b) musical (c) physical (d) magnetic
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
25. 25.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wash hands afterwards (c) wipe hands on face (d) lick your fingers
26. 26.True or false: sugar water is neutral. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) plain water (b) tamarind water (c) lemon juice (d) vinegar
28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same glass (b) the filter material (c) the same muddy water (d) how clear the water is
29. 29.🫗 Is filtered pond water safe to drink? (a) yes, always (b) no, germs may stay (c) yes, if it is clear (d) yes, if it is cold
30. 30.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is what we measure. (a) False (b) True
31. 31.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “size of the balloon”? (a) we measure it (b) we keep it the same (c) we change it
32. 32.🧺 Do we need a comb for the fizzy balloon? (a) needed (b) not needed
33. 33.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: how dark the writing is is kept the same. (a) True (b) False
34. 34.🎈 Why does the balloon blow up? (a) gas is made inside (b) vinegar is hot (c) outside air gets in (d) the bottle shrinks
35. 35.⚖️ Fair test — do seeds need water to sprout? True or false: how many seeds sprout is kept the same. (a) False (b) True
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.🧺 Do we need an empty bottle for the fizzy balloon? (a) not needed (b) needed
38. 38.🫗 How do we separate gravel from fine sand? (a) sieving (b) evaporating (c) filtering (d) handpicking
39. 39.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) yeast (c) a rubber band (d) sunlight
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same

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