The main chemicals present in a cup of coffee are water, caffeine, and tannins (acidic polyphenols which give coffee its brown color and bitter taste). You decide to extract caffeine from a cup of coffee using sodium bicarbonate and chlorofom, which has a density of 1.49 g/mL. In which layer would you expect to find caffeine? OH он HO. но. HO OH COOH HO COOH COOH Caffeine Tannins O The top organic layer O The bottom aqueous layer The top aqueous layer The bottom organic layer

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.