Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 96 · 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 — does a plant in the sun give out more water than one in the shade? What do we do with “the kind of plant”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🧺 Do we need a magnet for growing salt crystals? (a) not needed (b) needed
3. 3.True or false: vinegar is not needed for the leafy bag test. (a) True (b) False
4. 4.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) rusting iron (c) melting ice (d) dissolving salt
5. 5.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) an old shirt or apron (d) a white party dress
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
7. 7.🍋 Which of these steps is a job a child can do? (a) dipping the cotton bud (b) cutting the lemon (c) plugging in the iron (d) ironing the paper
8. 8.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) yeast (b) a cotton bud (c) lemon juice (d) an adult with an iron
9. 9.🧺 Do we need a magnet for the leafy bag test? (a) needed (b) not needed
10. 10.🫧 Which of these is neutral? (a) plain water (b) detergent water (c) lemon juice (d) baking soda water
11. 11.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) size of the balloon (b) the kind of balloon (c) spoons of baking soda (d) the same bottle
12. 12.🌱 Is salt needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
13. 13.🍞 Which of these is something yeast does not need? (a) time (b) sugar (c) warm water (d) vinegar
14. 14.True or false: melting ice is a change that can be undone. (a) True (b) False
15. 15.🛟 What should you do if vinegar splashes in your eye? (a) rinse with clean water (b) ignore it (c) add baking soda (d) rub it hard
16. 16.🧂 Why do we stir in salt until no more will dissolve? (a) to change its colour (b) to cool the water (c) to make it very salty (d) to make it fizz
17. 17.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the filter traps mud (c) the water evaporates (d) the mud dissolves
18. 18.True or false: baking soda does not dissolve in water. (a) False (b) True
19. 19.True or false: hold up the leaves is a job of the stem. (a) True (b) False
20. 20.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “size of the balloon”? (a) we keep it the same (b) we change it (c) we measure it
21. 21.🫗 How do we separate salt from sea water? (a) winnowing (b) handpicking (c) filtering (d) evaporating
22. 22.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the time we wait is kept the same. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) detergent water (b) lemon juice (c) soap solution (d) baking soda water
24. 24.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
25. 25.🧈 What is the watery liquid left after the butter forms? (a) honey (b) vinegar (c) buttermilk (d) oil
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
27. 27.🫧 Is plain water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
28. 28.🫗 Which of these is done by filtering? (a) chaff from wheat grain (b) small stones from dal (c) mud from water (d) bran from wheat flour
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 size of the plant (c) the kind of plant (d) sun or shade
30. 30.🧺 Which of these is not needed for the secret lemon message? (a) an adult with an iron (b) white paper (c) a small bowl (d) a balloon
31. 31.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) green (c) it stays white (d) bright blue
32. 32.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “sun or shade”? (a) we measure it (b) we change it (c) we keep it the same
33. 33.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much more water (b) much less water (c) exactly the same (d) it fills with soil
34. 34.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) vinegar (c) a tray for spills (d) a mirror
35. 35.🛟 What should you do after touching soil or seeds? (a) skip washing (b) rub your eyes (c) wash your hands (d) lick your fingers
36. 36.🛟 Which safety rule fits the fizzy balloon experiment? (a) seal it in a glass jar (b) put it in your mouth (c) shake it near your face (d) keep it away from eyes
37. 37.🌱 Which of these sprouts in a few days? (a) seeds on dry cotton (b) boiled seeds (c) wet seeds by a window (d) seeds in the freezer
38. 38.True or false: a potted plant is not needed for the leafy bag test. (a) True (b) False
39. 39.🧺 Which of these is needed for making butter? (a) a magnet (b) cold water to rinse (c) a balloon (d) a mirror
40. 40.🧺 Which of these is not needed for the yeast balloon? (a) a magnet (b) dry yeast (c) warm water (d) a balloon

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