Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 189 · 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 use more vinegar and more baking soda. What happens to the balloon? (a) it shrinks (b) it grows bigger (c) there is no change (d) it turns blue
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the amount poured (b) how clear the water is (c) the filter material
3. 3.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) time to make butter (b) how hard we shake (c) the cream temperature (d) the amount of cream
4. 4.True or false: bran from wheat flour is done by handpicking. (a) False (b) True
5. 5.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is what we measure. (a) False (b) True
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
7. 7.🧺 Which of these is not needed for the yeast balloon? (a) a mirror (b) warm water (c) dry yeast (d) a balloon
8. 8.📘 Is the fizzing a sign that a new substance is made? (a) it is only melting (b) no, nothing changes (c) yes, a new gas forms (d) it is only dissolving
9. 9.True or false: yeast is not needed for making butter. (a) False (b) True
10. 10.🌱 Is sugar needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
11. 11.🧺 Do we need a mirror for the secret lemon message? (a) needed (b) not needed
12. 12.🫧 What do you see when baking soda meets vinegar? (a) it turns to ice (b) nothing at all (c) it glows in the dark (d) lots of fizzy bubbles
13. 13.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) reddish-brown (c) it turns blue (d) it turns green
14. 14.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
15. 15.True or false: air is needed for a seed to sprout. (a) False (b) True
16. 16.True or false: sunlight is needed for a seed to sprout. (a) True (b) False
17. 17.True or false: cooking an egg is a change that cannot be undone. (a) False (b) True
18. 18.True or false: salt is something yeast needs. (a) False (b) True
19. 19.🪴 Which part of a plant does this job: carry water upward? (a) roots (b) leaves (c) flower (d) stem
20. 20.🧺 Which of these is needed for the yeast balloon? (a) a balloon (b) turmeric powder (c) a comb (d) a mirror
21. 21.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of water”? (a) we measure it (b) we keep it the same (c) we change it
22. 22.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) more butter forms (b) no butter forms (c) it turns blue (d) it turns to cheese
23. 23.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) use only kitchen items (d) mix bathroom cleaners
24. 24.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
25. 25.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a magnet (b) lemon juice (c) white paper (d) a cotton bud
26. 26.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) how dark the writing is (b) the kind of juice (c) the iron setting
27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a dropper or spoon (c) water (d) yeast
28. 28.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) water (c) a magnet (d) a mirror
29. 29.🧺 Do we need turmeric powder for the leafy bag test? (a) needed (b) not needed
30. 30.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same paper is the one thing we change. (a) True (b) False
31. 31.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
32. 32.🧺 Do we need a cotton bud for the secret lemon message? (a) needed (b) not needed
33. 33.🧺 Do we need an adult with an iron for the secret lemon message? (a) not needed (b) needed
34. 34.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
35. 35.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
36. 36.🔍 Which is the odd one out? (a) plain water (b) vinegar (c) soap solution (d) tamarind water
37. 37.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the kind of plant”? (a) we keep it the same (b) we change it (c) we measure it
38. 38.🌱 Is salt needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
39. 39.🔍 Which is the odd one out? (a) sugar (b) table salt (c) food colour (d) sawdust
40. 40.🧺 Which of these is not needed for the secret lemon message? (a) a small bowl (b) a cotton bud (c) a mirror (d) white paper

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