Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 379 · 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: lemon juice is neutral. (a) False (b) True
2. 2.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
3. 3.🧈 Which of these is a change that cannot be undone? (a) dissolving salt (b) freezing water (c) folding paper (d) cooking an egg
4. 4.🛟 Why is a plastic jar a good choice for shaking? (a) it is magnetic (b) it is hotter (c) it will not break (d) it is heavier
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.🔍 Which is the odd one out? (a) lemon juice (b) plain water (c) sugar water (d) salt water
7. 7.🔍 Which is the odd one out? (a) sugar water (b) tamarind water (c) vinegar (d) lemon juice
8. 8.🌱 Is warmth needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
9. 9.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the water evaporates (c) the mud dissolves (d) the filter traps mud
10. 10.🧺 Which of these is not needed for the leafy bag test? (a) a potted plant (b) sunlight (c) a clear plastic bag (d) a magnet
11. 11.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns blue (c) it turns yellow again (d) it disappears
12. 12.🎈 What blows up the balloon in the yeast experiment? (a) air from outside (b) steam (c) smoke (d) carbon dioxide gas
13. 13.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) white at once (c) bright blue (d) green
14. 14.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
15. 15.🧂 Which of these does not dissolve in water? (a) table salt (b) food colour (c) glucose powder (d) chalk powder
16. 16.🧺 Which of these is not needed for the turmeric test? (a) water (b) turmeric powder (c) lemon juice (d) a comb
17. 17.True or false: an empty bottle is needed for the fizzy balloon. (a) True (b) False
18. 18.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) water (b) moong seeds (c) a few days (d) a battery cell
19. 19.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) dark brown words (b) a rainbow (c) blue words (d) almost nothing
20. 20.🧺 Do we need a battery cell for the leafy bag test? (a) not needed (b) needed
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) sand and pebbles (c) a clean glass (d) yeast
22. 22.🔍 Which is the odd one out? (a) plain water (b) baking soda water (c) salt water (d) sugar water
23. 23.🧈 Why does shaking cream make butter? (a) shaking adds salt (b) the jar adds butter (c) fat bits stick together (d) the lid is warm
24. 24.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) wash your hands (b) lick your fingers (c) rub your eyes (d) skip washing
25. 25.🛟 Why must children keep their fingers away from the iron? (a) it is magnetic (b) it can burn skin (c) it is cold (d) it is sticky
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) False (b) True
27. 27.🌱 Will these sprout: seeds in the freezer? (a) does not sprout (b) sprouts
28. 28.🪴 Which of these is a job of the roots? (a) carry water upward (b) take in water from soil (c) make seeds (d) hold up the leaves
29. 29.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) amount of water drops (b) the time we wait (c) the size of the plant (d) sun or shade
30. 30.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) neutral (c) a base
31. 31.True or false: orange juice is an acid. (a) False (b) True
32. 32.🍞 Does yeast need a magnet to make gas? (a) yeast does not need it (b) yeast needs it
33. 33.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) a white party dress (d) an old shirt or apron
34. 34.True or false: a balloon is not needed for the fizzy balloon. (a) False (b) True
35. 35.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the amount of vinegar is the one thing we change. (a) False (b) True
36. 36.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
37. 37.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the amount of cream”? (a) we change it (b) we keep it the same (c) we measure it
38. 38.🟡 Which of these keeps turmeric yellow? (a) vinegar (b) soap solution (c) detergent water (d) baking soda water
39. 39.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) germs are invisible (d) clear water is hot
40. 40.🪴 Through which part does a plant take in water from the soil? (a) the roots (b) the fruits (c) the leaves (d) the flowers

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