![]() Because a molecule can be made of two same atoms but compounds are made up of two or more different types of atoms. ![]() All molecules are compounds but all compounds are not molecules. Water consists of two types of atoms: hydrogen and oxygen. In some traditional sense, you could consider water an element, but it doesnt qualify as an element according to the scientific definitionan element is a substance consisting of only one type of atom. Elements cannot be broken down further into smaller substances. Other elements included earth, air, fire, and sometimes metal, wood, or spirit. Note:Generally many elements are present in nature in compound form. Homoatomic molecules: When a molecule is composed of the same atoms then it is called a monatomic molecule. Depending on the type of elements present in them they are classified as: Molecules are made up of two or more atoms of the same or different type. (c) Molecules: Molecules are the smallest particles of substance (element or compound) which can exist independently. The properties of compounds are different from those of constituent elements because if we take sodium chloride then sodium chloride does not get burned in water but sodium when placed in contact with water it starts burning. Similarly sodium chloride is a compound because it is made up of two elements that are sodium and chlorine and it can be further decomposed into its constituent elements sodium and chlorine by passing electric current. It can be decomposed into its constituent elements $H$ and $O$ by passing electric current into it. compound - a substance that contains more than one element (H2O, C6H12O6, etc.) Whats wrong with the ice cream analogy Splitting an atom creates. They can be decomposed by chemical means into chemical constituents.įor example: Water is a compound because it is made up of two or more elements hydrogen and oxygen in the ratio 1: 8 by mass. Compounds are made up of two or more elements in a definite ratio by mass. For example: Germanium, arsenic etc.Ĭompounds: They are also regarded as pure substances. (c) Metalloids: The elements which possess properties of both metals and non- metals are called metalloids. (b) Non-metals: Non – metals are those elements which do not possess shine and are generally brittle and also poor conductors of electricity. (a)Metals: Metals are those elements which possess a characteristic lustre, malleability, ductility and are good conductors of heat and electricity. Some examples of elements are Gold, silver, hydrogen, oxygen etc.Įlements can be further classified into following categories: In chemistry if we talk about the elements we can say that they are the purest form of chemical substances which cannot be further broken down into constituents by ordinary chemical and physical methods consisting of atoms. These atoms may be the same or different. Molecules are made up of two or more than two atoms. Compounds consist of elements in the fixed proportion. Hint: Element is a pure form of substance which consists of atoms only.
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