A molecule is a group of two or more atoms that are chemically bonded together. These atoms can be of the same element or different elements.
Structure of Molecules
Molecules are composed of atoms that are held together by chemical bonds. The arrangement of atoms in a molecule is known as its molecular structure.
Types of Molecules
There are two main types of molecules:
Diatomic Molecules: These are molecules composed of two atoms of the same element bonded together. Examples include oxygen (O2) and hydrogen (H2).
Compound Molecules: These are molecules composed of atoms of different elements bonded together. Examples include water (H2O) and carbon dioxide (CO2).
Properties of Molecules
Molecules have various properties, including:
Mass: The total mass of a molecule is the sum of the masses of its constituent atoms.
Shape: The arrangement of atoms in a molecule determines its shape, which can affect its properties and interactions.
Polarity: Some molecules have polar bonds, meaning one end of the molecule has a slight positive charge while the other end has a slight negative charge.
Molecules are essential to life and play a crucial role in various biological, chemical, and physical processes. Understanding molecules helps in fields such as medicine, environmental science, and materials science.
The student demonstrates an understanding of the structure, function, behavior, development, life cycles, and diversity of living organisms by identifying and sorting animals into groups using basic external and internal features.