A protein can not be an element, because every protein must contain at least four elements: carbon, hydrogen, oxygen, and nitrogen. A pure protein is a compound, but it may be mixed either homogeneously or heterogeneously with other molecules that are so chemically similar that they are difficult to separate.
CH4 is a compound. It is the chemical formula for methane, which is a simple molecular compound consisting of one carbon atom and four hydrogen atoms bonded together. A heterogeneous mixture would involve different substances not chemically bonded like in a compound.
Air is mixture of at least four gasses. Each gas retains its owns distinct properties.
the empirical formula of a compound tells you the proportions of the elements in the compound. with that information you can make some inferences about the identity of the compound. for example a compound with an empirical formula CH4 tells us that for every carbon atom there are four hydrogen atoms. this means that the compound is methane because no other hydrocarbon can have these roportions (try drawing the lewis structure for C2H8, which doesnt exist. you cant!)
Gotem
four differences between fileprocessing system and database management system
Methane is a compound. It is made of hydrogen, and carbon. Chemical formula of it is CH4.
Methane is a chemical compound with the formula CH4. It consists of the elements carbon and hydrogen chemically bonded together, and is not a mixture.
Four Feet
A square has four corners whereas a circle doesn't.
Methane (CH4) is a compound because it is composed of at least two atoms of a different element.
The four "elements" are now classed as four different things completely: we know that fire is just the release of energy through combustion, water is a compound of oxygen and hydrogen, earth is a complex mixture of nitrates, phosphates and other ions and salts, and air is a mixture of elemental gases.
Quite simply, a C172 has four seats and a 152 only has two.
The compound formed between fluorine and silicon would be silicon tetrafluoride with the chemical formula SiF4. This compound is composed of one silicon atom bonded to four fluorine atoms.
A square is a special kind of parallelogram. All four of its sides are the same length and all four of its angles are equal.
A protein can not be an element, because every protein must contain at least four elements: carbon, hydrogen, oxygen, and nitrogen. A pure protein is a compound, but it may be mixed either homogeneously or heterogeneously with other molecules that are so chemically similar that they are difficult to separate.
Examples of four letter compound words are:ontointoupon