Elements, Compounds and Mixtures------- Elements

Elements

Inputs What is an element? An Element is a pure substance that cannot be split up into two or more simpler substances through neither chemical nor physical process. Chemical symbols of elements. Each element has their own unique chemical symbols to represent elements. This unique symbol consists of 1 or 2 letters. Classification of elements: metals non-metals Metalloids There are two major groups in which we can classify elements and they metals or non-metals. However there are some elements that have both the characteristics of both metals and non-metals and they are called metalloids. What are elements made of? Elements are made of tiny particles called atoms The atoms of one element differ to an atom of another element. Some elements exists as an atom. This stoms are called monatomic elements. It means that it is not chemically combined with other atoms of its element.  What are molecules? Molecules is a group of two or more atoms chemically bonded  or chemically combined Basic outiline of Elements: Elements are pure substances that cannot be further split into simpler subatnces through chemcal processes or electrolysis. Each elements has their own unique symbol to represent itsef Elements are classified based on their properties and can be classified into metals or non-metals An atom is the smallest property of an element that still contains the chemical properties of that element. A molecule is made up of two or more atoms that are chemically combined.

Outputs Examples of elements: Iron, oxygen, neon,etc. Carbon dioxide is not an element as carbon dioxide can be further broken down into one carbon atom and two oxygen atoms.  Different chemical symbols to represent each and every element: Carbon: C Potassium:K Magnesium: Mg Examples of metals: magnesium, iron, zinc, gold, tungsten, etc. Examples of non-metals: oxygen, nitrogen, helium, etc. Examples of metalloids: boron, sillicon, arsenic, etc.  Properties of metals: Shiny appearances (lustrous) Solids at room temperature and pressure (with the exception of mercury) Malleable (can be hammered into different shapes without breaking) Sonorous (makes a ringing soiund when struck) Ductile (can be drawn into wires) High meting and boiling points (with the exception of mercury, sodium and potassium) Good conductors of heat Good conductors of electricity in all states of matter Properties of non-metals: Dull appearances if solid (non-lustrous) Either gasses, volatile liquids or solids with low melting points at room temperature and pressure. (except for carbon) Brittle if solid (easily broken when hammered) Low melting points and boiling points except forcarbon and silicon Poor conductors of heat (except for carbon in the form of diamond and graphite) Poor conductors of electricity (except for carbon in the form of graphite) Atoms Atoms are the smallest particle an element could have  It has the chemical property of that particular element. Examples of monatomic elements: helium, neon, argon, krypton, xenon and radon. This elements are  also known as stable gases as they have achieved stable octet configuration. Examples of diatomic molecules: Oxygen, Hydrogen, Iodine, Chlorine This molecules are called diatomic atoms as they only have to atoms combined together to form a molecule. Polyatomic Molecules: Boron, Sulphur and Phosphorus