What is oxygen gas (two oxygen atoms bonded together) an element and not a compund?

Answer 1

One of the common mistakes is between molecules and atoms. Atoms combined make molecules. A single atom is always an element, because it only contains that element. Some elements bind to like (same) atoms, such as oxygen, to form a molecule, yet it is still an element because it only contains oxygen. When dislike (not the same) atoms combine to form a molecule, such as carbon and oxygen, they form a compound. Therefore all single atoms are elements, but molecules can be both elements (ex O2) and compounds (ex H2O).

Answer 2

Two atoms of the same element bonded together form a molecule. A compound by definition is a bodning of two different atoms. A mixture is a mixture of two or more substances but without bonding. These definitions are to be accepted and used.

Answer 3

Oxygen as an atom is O while oxygen in its only natural form (as best as is found in nature) is a molecule of O2 thus yes oxygen gas is just a large cluster of O2 with some small nitrogenous impurities. Pure O2 in to high a quantity is also poisonous.

Answer 4

Im a nursing student and have taken loads of Chemistry. If an element is combined to itself such as two Oxygens or two Nitrogens then it is considered to still be and element and a compound is when two different elements are combined such as in salt Na+ and Cl are combined making this a compound. Hope that helps

Answer 5

A compound requires two or more atoms from different elements. Technically it is "an element." Since both atoms come from the same element. If I have two chunks of concrete, I can just as well call my collection "the concrete."

Good question though!

Answer 6

4 The octet rule: oftentimes, each and each atom (different than hydrogen) in a molecule needs a minimum of 8 valence electrons surrounding it, if achievable. each and each oxygen atom has 6 valence electrons, for a entire of 12. If we start up, in widespread trend, via drawing out the Lewis shape with basically a single bond between them, we then have (12 - (2*1bond)) = 10 electrons left to distribute. shall we supply 6 to a minimum of one atom, for a entire of 8 (counting the two its sharing) filling its octet, yet then we'd basically have 4 left to offer to the different atom, for a entire of 6, leaving it 2 electrons wanting filling its needed octet. whenever you have not got sufficient electrons to fill all the octets, you may desire to start forming double bonds. in case you draw out the Lewis shape utilising a double bond, then you definitely have (12 - (2*2bonds)) = 8 electrons left to distribute. If we supply 4 to the 1st atom, it then has a entire of 8, which fulfills the octet rule, and we nonetheless have 4 left to offer to the 2nd atom, which additionally fills its octet.