Matter
Definition and meaning of Matter in chemistry.
Matter is anything that possesses physical mass and takes up space by occupying a measurable volume.
In more detail
It forms the physical substance of the observable universe and can exist in various distinct physical states, most commonly as a solid, liquid, gas, or plasma. Matter is fundamentally composed of microscopic particles known as atoms, which can chemically bond to form molecules and more complex macromolecular structures. In the field of chemistry, the study of matter involves deeply understanding its elemental composition, observing its macroscopic properties, and analyzing the energetic changes it undergoes during various chemical reactions. All physical objects encountered in daily life are composed of matter.
Key facts
| Field | General Chemistry |
|---|---|
| Fundamental Units | Atoms and molecules |
| Common States | Solid, liquid, gas, plasma |
Liquid water (H2O) inside a glass is considered matter because it has a measurable mass and occupies a specific volume within the boundaries of the container.
Frequently asked questions
Is light considered a form of matter?
No, light consists of photons which have zero rest mass and do not occupy physical volume, meaning it is classified as energy rather than matter.
Can matter be created or destroyed?
According to the law of conservation of mass, matter cannot be created or destroyed in ordinary chemical or physical reactions.