Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 707 · 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.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
2. 2.🔍 Which is the odd one out? (a) folding paper (b) melting ice (c) milk turning to curd (d) freezing water
3. 3.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the same kind of bag is the one thing we change. (a) True (b) False
4. 4.🧺 Do we need a rubber band for the leafy bag test? (a) needed (b) not needed
5. 5.🧺 Which of these is not needed for the secret lemon message? (a) a magnet (b) white paper (c) a cotton bud (d) an adult with an iron
6. 6.🔍 Which is the odd one out? (a) writing the message (b) putting the iron away (c) letting the paper dry (d) dipping the cotton bud
7. 7.🍋 Why does the lemon writing turn brown with heat? (a) heat adds colour (b) the juice scorches first (c) the iron is brown (d) paper turns lemony
8. 8.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) size of the balloon (b) the water temperature (c) the amount of yeast (d) the amount of water
9. 9.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same paper”? (a) we change it (b) we measure it (c) we keep it the same
10. 10.🛟 What should you do after touching soil or seeds? (a) lick your fingers (b) skip washing (c) wash your hands (d) rub your eyes
11. 11.🍋 Which of these steps is a job a child can do? (a) cutting the lemon (b) ironing the paper (c) reading the message (d) putting the iron away
12. 12.🍞 Which of these is something yeast needs? (a) time (b) salt (c) sunlight (d) vinegar
13. 13.🧺 Do we need a battery cell for the leafy bag test? (a) not needed (b) needed
14. 14.True or false: a small bottle is not needed for the yeast balloon. (a) True (b) False
15. 15.⚖️ Fair test — do seeds need water to sprout? True or false: how many seeds sprout is the one thing we change. (a) True (b) False
16. 16.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
17. 17.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
18. 18.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) reddish (d) bright blue
19. 19.🔍 What do you see after shaking cream in a jar for a long time? (a) clear water only (b) sugar crystals (c) bubbles of gas (d) lumps of butter
20. 20.True or false: a balloon is not needed for the fizzy balloon. (a) True (b) False
21. 21.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) your school uniform (d) an old shirt or apron
22. 22.🔮 The fizzing stops after a while. Why? (a) the balloon got cold (b) the bottle got tired (c) an ingredient ran out (d) the gas froze
23. 23.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns black (d) it turns blue
24. 24.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) the number of seeds (b) the kind of seeds (c) wet or dry cotton (d) the same bowls
25. 25.🍞 Why does yeast work slowly in cold water? (a) cold slows yeast down (b) cold kills sugar (c) cold water is heavy (d) cold makes it pink
26. 26.True or false: a funnel or spoon is needed for the fizzy balloon. (a) True (b) False
27. 27.True or false: detergent water is an acid. (a) True (b) False
28. 28.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a battery cell (c) water (d) a dropper or spoon
29. 29.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) yes, all of it (c) it turns to sugar (d) no, salt passes through
30. 30.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) turmeric powder (b) a bowl (c) a jar with a tight lid (d) cold water to rinse
31. 31.🫗 How do we separate chaff from wheat grain? (a) filtering (b) evaporating (c) handpicking (d) winnowing
32. 32.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) the amount of cream (b) time to make butter (c) the cream temperature
33. 33.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
34. 34.True or false: fresh cream is needed for making butter. (a) False (b) True
35. 35.🫧 Is curd an acid, a base or neutral? (a) an acid (b) a base (c) neutral
36. 36.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows very little (b) it bursts at once (c) it turns yellow (d) it grows much faster
37. 37.🔍 Which is the odd one out? (a) water (b) warmth (c) salt (d) air
38. 38.True or false: sunlight is not needed for a seed to sprout. (a) False (b) True
39. 39.⚖️ Fair test — do seeds need water to sprout? What do we do with “the kind of seeds”? (a) we change it (b) we measure it (c) we keep it the same
40. 40.🪴 Through which part does a plant take in water from the soil? (a) the roots (b) the flowers (c) the leaves (d) the fruits

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