Anything that has mass and occupies space. Matter exists in four states: solid, liquid, gas, and plasma. Chemistry is the study of the properties and transformations of matter. All matter is composed of atoms, which are the building blocks of elements and compounds.
Properties & Characteristics
Matter is anything that has mass and occupies space (volume). It is composed of atoms and molecules. The four common states of matter are: solid (fixed shape and volume), liquid (fixed volume, variable shape), gas (variable shape and volume), and plasma (ionised gas at very high temperature). Matter is classified as pure substance (element or compound) or mixture (homogeneous or heterogeneous). Changes of state are physical changes; chemical reactions transform matter into new substances.
Uses & Applications
Understanding matter and its states is foundational to all of chemistry, physics, materials science, and engineering. The behaviour of matter under different conditions (temperature, pressure, electromagnetic fields) drives the design of materials, processes, and technologies.
Safety Information
No direct safety concern for the fundamental concept. The specific hazards of matter depend entirely on the composition and state: gaseous toxic substances, liquid corrosives, solid reactive metals, and plasma radiation present very different risks.
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Anything that has mass and occupies space. Matter exists in four states: solid, liquid, gas, and plasma. Chemistry is the study of the properties and transformations of matter. All matter is composed of atoms, which are the building blocks of elements and compounds.
Understanding matter and its states is foundational to all of chemistry, physics, materials science, and engineering. The behaviour of matter under different conditions (temperature, pressure, electromagnetic fields) drives the design of materials, processes, and technologies.
No direct safety concern for the fundamental concept. The specific hazards of matter depend entirely on the composition and state: gaseous toxic substances, liquid corrosives, solid reactive metals, and plasma radiation present very different risks.
Editorial standards: Chemical data is sourced from peer-reviewed literature,
CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA,
and IAEA. For educational purposes only — always consult official SDS documentation and qualified
professionals before handling chemicals.
