Chemistry is an essential subject of the curriculum of science students. Students should learn chemistry correctly to study science in their future academic life. The two most important factors of this subject are each element and compound. The overall subject of chemistry is based on these two factors. Hence, students should have a clear concept of elements and compounds.
One most crucial topic of chemistry is the difference between element and compound. All the chemistry students must read this topic.
They should know the element and compound first. After learning the definitions, the students can read the element and compound difference efficiently. Element is a chemical material, which contains a single type of atom. The particles have the same atomic number in the periodic table.
Chemical elements are classified into three types, which are metals, non—metals and metalloids. The metals are available on the left of the periodic table. The metals have the properties of electro-conductivity, magnetic, malleable, shiny, etc. Some examples of metals are copper, aluminium, gold, iron, mercury, etc.
The non-metal elements are located on the right side of the periodic table. They are not malleable, not magnetic, not electro-conductive, and shiny. Two important examples of non-metals are oxygen and carbon. Now comes the medium elements called metalloids. They have some mixed properties of metals and nonmetals. Silicon and arsenic are two metalloids. Aristotle conceptualized a new fifth element called 'quintessence' - which apparently formed the heavens.
As research continued, many eminent scientists paved way for the current understanding and description of elements. Lavoisier was the first to make a list of chemical elements and Mendeleev was the first to arrange elements according to their atomic number in the Periodic Table. The most current definition of an element is awarded by the studies carried out by Henry Moseley which states that the atomic number of an atom is expressed physically by its nuclear charge. Before the s the usage of term compound could also mean a mixture.
It was in the 19th century that meaning of a compound could be distinguished from a mixture. Alchemists like Joseph Louis Proust, Dalton and Berthollet and their studies on various compounds have given modern chemistry the current definition of compound.
Every chemical substance is identified by its unique numerical identifier — the CAS chemical abstracts service number. Hence every chemical compound and element has a CAS number. This makes database searches for elements and compounds more convenient. Share this comparison:. If you read this far, you should follow us:.
Diffen LLC, n. Compound vs. Comparison chart Compound versus Element comparison chart Compound Element Definition A compound contains atoms of different elements chemically combined together in a fixed ratio. An element is a pure chemical substance made of same type of atom. Composition Compounds contain different elements in a fixed ratio arranged in a defined manner through chemical bonds. They contain only one type of molecule.
Elements that compose the compound are chemically combined. Elements contain only one type of atom. Each atom has the same atomic number i. Elements cannot be broken down into simpler substances by chemical reactions. Representation A compound is represented using its chemical formula that represents the symbols of its constituent elements and the number of atoms of each element in one molecule of the compound. An element is represented using symbols.
When two distinct elements are chemically combined—i. Most elements on Earth bond with other elements to form chemical compounds, such as sodium Na and Chloride Cl , which combine to form table salt NaCl.
Water is another example of a chemical compound. The two or more component elements of a compound can be separated through chemical reactions. Chemical compounds have a unique and defined structure, which consists of a fixed ratio of atoms held together in a defined spatial arrangement by chemical bonds. Chemical compounds can be:.
Pure chemical elements are not considered chemical compounds, even if they consist of diatomic or polyatomic molecules molecules that contain only multiple atoms of a single element, such as H 2 or S 8. Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:.
Skip to main content. Introduction to Chemistry. Search for:. Elements and Compounds. Learning Objective Differentiate between elements and compounds and explore separation techniques.
Key Points Elements are the simplest complete chemical substances.
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