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For example the element sodium is made up of only sodium atoms.
Element and compound definition and examples. Mixtures such as the atmosphere contain two or more substances that are relatively easy to separate. The difference between an element and a compound is that an element is a substance made of same type of atoms whereas a compound is made of different elements in definite proportions. Sodium chloride is a chemical compound formed from sodium na and chlorine cl in a 1 1 ratio. Compounds compounds are chemical substances made up of two or more elements that are chemically bound together in a fixed ratio.
It can contain as little as 10 or as much as 45 zinc. Although the formula for sodium chloride is nacl the compound does not contain actual nacl molecules. Therefore a compound is a substance formed when two or more elements combine in a fixed ratio. Examples of compounds include table salt or sodium chloride nacl an ionic compound sucrose a molecule nitrogen gas n 2 a covalent molecule a sample of copper intermetallic and water h 2 o a covalent molecule.
These are substances that are made up of a minimum of two different varieties of elements held together by a chemical bond. Chemistry is the study of the structures physical properties and chemical properties of material substances. These are pure substances that are made up of just a single variety of atom. Classified as per their bonds such as molecular ionic and metallic.
Examples of elements include iron copper hydrogen and oxygen. Elements mixtures and compounds chemistry is the study of physical matter which is classified in many different ways such as state of matter gas liquid or solid chemical form element mixture or compound chemical structure atoms or molecules etc and so on. Brass is an example of a mixture of two elements. Represented by numbers.
A molecule is a substance that contains two or more atoms chemically joined such as h 2 o2 a compound is a substance that is made up of two or more different elements that are chemically joined such as h 2o co n acl. It is a new substance formed from its elements. For example water is a compound of hydrogen and oxygen. It is very important to understand that all gases liquids and solids are not the same.
Classified as metalloids non metals and metals. Another difference between compounds and mixtures of elements is the ease with which the elements can be separated. For example two atoms of the element hydrogen h and one atom of the element oxygen o combine to form a molecule of water h 2 o which is a compound.
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