What is the differemce between molecule, compound and element
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To understand the difference between molecule, compound, and element, we need to start by defining each term.
1. Element: An element is a pure substance that cannot be broken down into simpler substances by ordinary chemical means. Elements are composed of only one type of atom. For example, oxygen (O), hydrogen (H), and carbon (C) are all elements.
2. Compound: A compound is a substance composed of two or more different elements chemically combined in a fixed ratio. Compounds have a unique chemical formula and distinct properties different from those of their constituent elements. For example, water (H2O), carbon dioxide (CO2), and table salt (NaCl) are all compounds.
3. Molecule: A molecule is the smallest unit of a compound that retains its chemical properties and can exist independently. A molecule could be composed of atoms of the same element (e.g., O2, N2) or atoms of different elements (e.g., H2O, CO2). So, all compounds consist of molecules, but not all molecules are compounds.
In summary, an element is a pure substance made up of only one type of atom, a compound is a substance made up of two or more elements chemically bonded together, and a molecule is the smallest independent unit of either an element or a compound.
To determine the difference between these terms, it is important to understand the characteristics and composition of each substance. Reference materials such as chemistry textbooks or reliable online sources can provide further information and examples.