Hayat Ashraf

Elements and molecules are fundamental concepts in chemistry that are essential for understanding the composition and behavior of matter. Let's explore each of these concepts in more detail: Elements: - An element is a pure substance that consists of only one type of atom. Atoms are the basic building blocks of matter. - Each element is represented by a unique symbol, usually derived from its name or Latin name. For example, oxygen is represented by the symbol O, and carbon is represented by C. - Elements are organized in the periodic table, which arranges them based on their atomic number (number of protons in the nucleus) and their chemical properties. - There are 118 known elements, including hydrogen, oxygen, carbon, nitrogen, and many others. Each element has distinct physical and chemical properties. Molecules: - A molecule is formed when two or more atoms chemically combine together. These atoms can be of the same element or different elements. - Molecules are the smallest u...