Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 291 · 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 more baking soda blow the balloon up bigger? True or false: size of the balloon is kept the same. (a) True (b) False
2. 2.⚖️ 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
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) turmeric powder (d) a balloon
4. 4.🫧 What do you see when baking soda meets vinegar? (a) it turns to ice (b) lots of fizzy bubbles (c) it glows in the dark (d) nothing at all
5. 5.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “amount of water drops”? (a) we keep it the same (b) we change it (c) we measure it
6. 6.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
7. 7.🧺 Which of these is not needed for sprouting seeds? (a) a few days (b) a small bowl (c) a battery cell (d) moong seeds
8. 8.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a clean glass (c) a mirror (d) cotton or cloth
9. 9.🔍 Which is the odd one out? (a) sunlight (b) sugar (c) vinegar (d) a magnet
10. 10.True or false: a battery cell is not needed for making butter. (a) False (b) True
11. 11.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) warm water (c) a magnet (d) a shallow dish
12. 12.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we change it (c) we measure it
13. 13.🪴 Through which part does a plant take in water from the soil? (a) the fruits (b) the leaves (c) the flowers (d) the roots
14. 14.True or false: an adult with an iron is needed for the secret lemon message. (a) False (b) True
15. 15.True or false: a potted plant is not needed for the leafy bag test. (a) True (b) False
16. 16.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) plain water (c) vinegar (d) detergent water
17. 17.⚖️ 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
18. 18.🧺 Which of these is not needed for making butter? (a) turmeric powder (b) fresh cream (c) cold water to rinse (d) a jar with a tight lid
19. 19.True or false: baking soda is needed for the fizzy balloon. (a) False (b) True
20. 20.🌱 Will these sprout: wet seeds by a window? (a) does not sprout (b) sprouts
21. 21.🧺 Which of these is not needed for the secret lemon message? (a) a balloon (b) lemon juice (c) a cotton bud (d) white paper
22. 22.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it bursts at once (b) it turns yellow (c) it grows very little (d) it grows much faster
23. 23.🫧 Which of these is neutral? (a) baking soda water (b) sugar water (c) curd (d) detergent water
24. 24.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) no crystals (c) bigger crystals (d) smaller crystals
25. 25.⚖️ 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
26. 26.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) a battery cell (d) sand and pebbles
27. 27.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) rub your eyes (b) skip washing (c) wash your hands (d) lick your fingers
28. 28.🧈 What is the watery liquid left after the butter forms? (a) buttermilk (b) oil (c) vinegar (d) honey
29. 29.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) a bowl (c) a timer (d) a magnet
30. 30.🧺 Which of these is not needed for the turmeric test? (a) a balloon (b) turmeric powder (c) lemon juice (d) a dropper or spoon
31. 31.🔍 Which is the odd one out? (a) sugar water (b) plain water (c) salt water (d) baking soda water
32. 32.🧺 Do we need a cotton bud for the secret lemon message? (a) needed (b) not needed
33. 33.🧂 Which of these does not dissolve in water? (a) glucose powder (b) food colour (c) table salt (d) sand
34. 34.🔍 Which is the odd one out? (a) dipping the cotton bud (b) reading the message (c) writing the message (d) cutting the lemon
35. 35.🧺 Which of these is needed for making butter? (a) a magnet (b) yeast (c) cold water to rinse (d) a battery cell
36. 36.🔮 Predict: sprouts grow in the dark for a week. What colour are their leaves? (a) dark green (b) pale yellow (c) blue (d) bright red
37. 37.🍞 Where is yeast used in the kitchen? (a) to colour rice (b) to wash dishes (c) to make bread rise (d) to clean floors
38. 38.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
39. 39.🍞 Does yeast need time to make gas? (a) yeast needs it (b) yeast does not need it
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the number of drops (c) the light we look in (d) the liquid we test

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