The study of the composition, structure, properties, and reactions of matter.
The study of substances that contain the element carbon.
The study of the chemical reactions that take place in biological systems.
The amount of space a substance occupies.
The quantity of material an object contains.
Numbers obtained by counting items or using a definition that compares two units in the same measuring system.
Shows the relationship between two units that measure the same quantity.
The ability to do work.
Matter that has a fixed or constant composition.
The smallest particle of an element.
A substance that always has the same composition and properties wherever it is found.