Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 419 · 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 seeds need water to sprout? True or false: how many seeds sprout is what we measure. (a) True (b) False
2. 2.🫧 Which of these is an acid? (a) salt water (b) orange juice (c) detergent water (d) sugar water
3. 3.🔍 Which is the odd one out? (a) glucose powder (b) chalk powder (c) table salt (d) sugar
4. 4.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
5. 5.🧺 Which of these is not needed for the secret lemon message? (a) a cotton bud (b) lemon juice (c) yeast (d) white paper
6. 6.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) a mirror (c) a small bottle (d) sugar
7. 7.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) water (b) a balloon (c) moong seeds (d) cotton wool
8. 8.True or false: hold up the leaves is a job of the stem. (a) False (b) True
9. 9.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) sand and pebbles (c) a magnet (d) a mirror
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.🍋 Which of these steps is a job a child can do? (a) putting the iron away (b) plugging in the iron (c) cutting the lemon (d) dipping the cotton bud
12. 12.🔍 Which is the odd one out? (a) putting the iron away (b) ironing the paper (c) letting the paper dry (d) cutting the lemon
13. 13.🔍 Which is the odd one out? (a) dipping the cotton bud (b) cutting the lemon (c) ironing the paper (d) plugging in the iron
14. 14.📘 What is yeast? (a) a tiny living fungus (b) a kind of sugar (c) a kind of stone (d) a kind of salt
15. 15.True or false: a small bottle is not needed for the yeast balloon. (a) False (b) True
16. 16.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
17. 17.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a funnel or spoon (b) a balloon (c) a tray for spills (d) a battery cell
18. 18.🫧 Which of these is neutral? (a) plain water (b) vinegar (c) baking soda water (d) tamarind water
19. 19.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) nothing (c) the water (d) the salt
20. 20.🪴 Where did the water inside the bag come from? (a) the rubber band (b) the rain (c) the leaves (d) the plastic
21. 21.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a balloon (c) muddy water (d) a magnet
22. 22.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the cream temperature”? (a) we measure it (b) we change it (c) we keep it the same
23. 23.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
24. 24.🔍 Which is the odd one out? (a) melting butter (b) cooking an egg (c) milk turning to curd (d) rusting iron
25. 25.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is what we measure. (a) True (b) False
26. 26.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
27. 27.True or false: freezing water is a change that can be undone. (a) False (b) True
28. 28.🍋 Secret message: who does this step — plugging in the iron? (a) an adult does it (b) a child can do it
29. 29.🛟 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
30. 30.True or false: lemon juice is needed for the secret lemon message. (a) False (b) True
31. 31.True or false: turmeric powder is needed for making butter. (a) False (b) True
32. 32.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) the cool cloudy day (b) neither of them (c) the hot sunny day (d) both the same
33. 33.True or false: sunlight is not needed for the leafy bag test. (a) False (b) True
34. 34.🍞 Which of these is something yeast needs? (a) sunlight (b) salt (c) a magnet (d) sugar
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.🎈 What blows up the balloon in the yeast experiment? (a) smoke (b) air from outside (c) steam (d) carbon dioxide gas
37. 37.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) tea stays behind (c) leaves stay behind (d) leaves pass through
38. 38.⚖️ Fair test — do seeds need water to sprout? What do we do with “how many seeds sprout”? (a) we measure it (b) we keep it the same (c) we change it
39. 39.🧈 Why does shaking cream make butter? (a) fat bits stick together (b) shaking adds salt (c) the jar adds butter (d) the lid is warm
40. 40.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) carbon dioxide (b) helium (c) oxygen (d) hydrogen

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