Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 827 · 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.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.🍞 Does yeast need sugar to make gas? (a) yeast does not need it (b) yeast needs it
3. 3.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) a white party dress (d) your school uniform
4. 4.🫧 Which of these is an acid? (a) detergent water (b) plain water (c) orange juice (d) soap solution
5. 5.True or false: yeast is needed for the secret lemon message. (a) True (b) False
6. 6.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: how hard we shake is kept the same. (a) False (b) True
7. 7.🍞 Which of these is something yeast needs? (a) a magnet (b) vinegar (c) salt (d) sugar
8. 8.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) reddish-brown (d) it turns blue
9. 9.🧺 Do we need turmeric powder for the leafy bag test? (a) not needed (b) needed
10. 10.🌱 Seeds need water, air and ___ to sprout. (a) soil (b) sugar (c) salt (d) warmth
11. 11.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
12. 12.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
14. 14.🧈 Before the butter appears, what does the cream turn into? (a) powder (b) clear water (c) thick whipped cream (d) ice
15. 15.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) the amount of sugar (b) size of the balloon (c) the water temperature
16. 16.True or false: putting the iron away is a job a child can do. (a) False (b) True
17. 17.🧺 Do we need yeast for making butter? (a) needed (b) not needed
18. 18.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) spoons of baking soda (b) the amount of vinegar (c) the kind of balloon (d) size of the balloon
19. 19.🪴 Which part of a plant does this job: give out water vapour? (a) flower (b) stem (c) roots (d) leaves
20. 20.True or false: bad grains from rice is done by handpicking. (a) True (b) False
21. 21.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) how many seeds sprout (b) wet or dry cotton (c) the kind of seeds
22. 22.True or false: a comb is needed for the yeast balloon. (a) False (b) True
23. 23.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) plain water
24. 24.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
25. 25.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) tamarind water (c) soap solution (d) detergent water
26. 26.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the same jar”? (a) we measure it (b) we keep it the same (c) we change it
27. 27.🧂 Which of these does not dissolve in water? (a) sawdust (b) glucose powder (c) sugar (d) food colour
28. 28.🧺 Which of these is not needed for the fizzy balloon? (a) an empty bottle (b) vinegar (c) a mirror (d) a funnel or spoon
29. 29.🧺 Which of these is needed for making butter? (a) a magnet (b) yeast (c) turmeric powder (d) cold water to rinse
30. 30.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
31. 31.🧺 Do we need a balloon for the fizzy balloon? (a) needed (b) not needed
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) a magnet (d) cotton or cloth
33. 33.🔍 Which is the odd one out? (a) baking soda water (b) lemon juice (c) salt water (d) vinegar
34. 34.🔍 Which is the odd one out? (a) glucose powder (b) small pebbles (c) baking soda (d) table salt
35. 35.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the same bottles”? (a) we keep it the same (b) we measure it (c) we change it
36. 36.True or false: salt is something yeast needs. (a) True (b) False
37. 37.🧺 Which of these is needed for the leafy bag test? (a) vinegar (b) sunlight (c) a mirror (d) turmeric powder
38. 38.🧺 Do we need a magnet for making butter? (a) not needed (b) needed
39. 39.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is what we measure. (a) False (b) True
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the light we look in

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