Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 233 · 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.🧺 Which of these is needed for making butter? (a) turmeric powder (b) a timer (c) a balloon (d) a magnet
2. 2.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the amount of cream is the one thing we change. (a) True (b) False
3. 3.🧺 Which of these is not needed for sprouting seeds? (a) a magnet (b) a few days (c) a small bowl (d) moong seeds
4. 4.⚖️ Fair test — do seeds need water to sprout? What do we do with “wet or dry cotton”? (a) we change it (b) we measure it (c) we keep it the same
5. 5.🧺 Do we need a battery cell for sprouting seeds? (a) needed (b) not needed
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
7. 7.True or false: a mirror is needed for the muddy water filter. (a) False (b) True
8. 8.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a balloon (c) cotton or cloth (d) a clean glass
9. 9.🧺 Do we need turmeric powder for the secret lemon message? (a) needed (b) not needed
10. 10.🧺 Which of these is needed for the yeast balloon? (a) a magnet (b) a balloon (c) a battery cell (d) a paper clip
11. 11.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) sunny or shady place (b) the amount of salt (c) days to see crystals
12. 12.🧺 Which of these is needed for the leafy bag test? (a) sunlight (b) a magnet (c) vinegar (d) a mirror
13. 13.🌱 Which of these is not needed for a seed to sprout? (a) soil (b) water (c) air (d) warmth
14. 14.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
15. 15.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it grows faster (b) it wilts and droops (c) it turns blue (d) it flowers more
16. 16.🔍 Which is the odd one out? (a) melting ice (b) folding paper (c) baking a cake (d) freezing water
17. 17.⚖️ 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) the same jar (c) the cream temperature (d) the amount of cream
18. 18.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
19. 19.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) yeast (b) a potted plant (c) a few hours (d) a clear plastic bag
20. 20.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a magnet (b) water (c) a small bowl (d) a few days
21. 21.🍋 Secret message: who does this step — writing the message? (a) an adult does it (b) a child can do it
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) soap solution (c) water (d) lemon juice
23. 23.⚖️ 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
24. 24.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it is much faster (b) it makes salt (c) it turns pink (d) it takes much longer
25. 25.📘 What is yeast? (a) a kind of stone (b) a kind of salt (c) a tiny living fungus (d) a kind of sugar
26. 26.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) muddy water (c) a magnet (d) a battery cell
27. 27.🧺 Do we need a magnet for the yeast balloon? (a) not needed (b) needed
28. 28.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) there is no change (b) it shrinks (c) it grows bigger (d) it turns blue
29. 29.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
30. 30.🧺 Which of these is needed for the fizzy balloon? (a) sugar (b) a mirror (c) a comb (d) vinegar
31. 31.True or false: a magnet is not needed for sprouting seeds. (a) True (b) False
32. 32.🛟 Which safety rule fits the fizzy balloon experiment? (a) shake it near your face (b) seal it in a glass jar (c) keep it away from eyes (d) put it in your mouth
33. 33.🍞 Does yeast need sunlight to make gas? (a) yeast does not need it (b) yeast needs it
34. 34.🌱 Which of these does not sprout? (a) seeds on wet cotton (b) wet seeds by a window (c) wet seeds in the dark (d) seeds on dry cotton
35. 35.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: how hard we shake is kept the same. (a) True (b) False
36. 36.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the iron setting”? (a) we change it (b) we measure it (c) we keep it the same
37. 37.True or false: take in water from soil is a job of the roots. (a) True (b) False
38. 38.True or false: a balloon is not needed for the secret lemon message. (a) False (b) True
39. 39.True or false: a comb is not needed for the turmeric test. (a) False (b) True
40. 40.⚖️ Fair test — do seeds need water to sprout? What do we do with “how many seeds sprout”? (a) we change it (b) we measure it (c) we keep it the same

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