AP BIOLOGY

Detailed explanation-1: -A compound always has the same elements in the same proportions. The properties of compounds are different from the properties of the elements that form them sometimes very different. That s because elements in a compound combine and become an entirely different substance with its own unique properties.

Detailed explanation-2: -Compounds can be defined as substances consisting of 2 or more different types of elements in a fixed ratio of their atoms. When the elements combine, some individual property of the elements is lost and the newly formed compound has new properties. Chemical Formula: Compounds are represented by their chemical formula.

Detailed explanation-3: -When elements combine to form compounds, their individual properties are lost. In comparison, elements retain some (or many) of their property when they are mixed to form a mixture.

Detailed explanation-4: -A compound is a substance that contains two or more elements chemically combined in a fixed proportion. The elements carbon and hydrogen combine to form many different compounds. One of the simplest is called methane, in which there are always four times as many hydrogen atoms as carbon atoms.