Learn vocabulary, terms, and more with flashcards, games, and other study tools. water is a _____ (element, compound, homogenous mixture, heterogenous mixture) compound. In fact there are many species of caffeinated plants with decaffeinated relatives (poor things), but, as a non-essential component, it can be harder to pinpoint exactly what the caffeine is doing there. Element vs Compound. caffeine is a _____ (element, compound, homogenous mixture, heterogenous mixture) compound. Chemically, caffeine is a methylxanthine. Both diethyl ether and benzene at first glance appear to be poor choices for extraction because caffeine is more soluble in water than in either solvent (if a gram of caffeine dissolves in \(46 \: \text{mL}\) water, but \(100 \: \text{mL}\) of benzene, caffeine is more soluble in water). Caffeine was discovered in tea (Camellia sinensis) and coffee (Coffea arabica) in the 1820s ().Along with other methylxanthines, including theobromine (3,7-dimethylxanthine), paraxanthine (1,7-dimethylxanthine) and methyluric acids (), caffeine is a member of a group of compounds known collectively as purine alkaloids.There are two hypotheses about the role of … This is an element, _____ (water, blood, iron, wood) Caffeine hydrochloride | C8H11ClN4O2 | CID 57362268 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more. variable composition. Caffeine is sometimes called guaranine when found in guarana, mateine when found in mate, and theine when found in tea. Start studying element, compound, or mixture. However, the molar mass of caffeine is 194.19 g/mol. The IUPAC systematic name is 1,3,7-trimethyl-1H-purine-2,6(3H,7H)-dione. Caffeine is toxic to birds and to dogs and cats, and has a pronounced adverse effect on mollusks, various insects, and spiders. Caffeine has also been found to enhance the reward memory of honey bees. a) Element b) Compound c) Mixture 16) Is this an element, compound, or mixture? Caffeine is classified as a secondary compound which means it is not essential for the plant's survival. Caffeine (C 8 H 10 N 4 O 2) is the common name for trimethylxanthine (systematic name is 1,3,7-trimethylxanthine or 3,7-dihydro-1,3,7-trimethyl-1H-purine-2,6-dione).The chemical is also known as coffeine, theine, mateine, guaranine, or methyltheobromine. Caffeine is a naturally occurring compound found in the leaves and fruits of certain plants. The difference between element and compound is that element is a specific species of an atom that has a similar number of protons in the atomic nuclei. It may also be found in chocolate bars, energy bars and some over-the-counter medications, such as cough syrup and slimming tablets. A solution can be distinguished from a compound by its ? The compound caffeine has a number of other names including 1,3,7-trimethylxanthine, trimethylxanthine, theine, and methyltheobromine. This is at least partly due to a poor ability to metabolize the compound, causing higher levels for a given dose per unit weight. a) 1 b) 24 c) 12 d) 4 14) Is this an element, compound, or mixture? Caffeine is a xanthine alkaloid compound that acts as a stimulant in humans. Caffeine is a compound, not an element, and thus does not have an atomic number. Caffeine is naturally produced by several plants, including coffee beans, guarana, yerba maté, cacao beans, and tea. Figure 4.12: Caffeine. a) Element b) Compound c) Mixture 15) Is this an element, compound, or mixture? a) 1 b) 24 c) 12 d) 4 13) How many atoms are in a caffeine molecule? Caffeine is found in coffee, black and green tea, cocoa, cola soft drinks and energy drinks.
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