Structure of Matter

Front

Having limits or bounds (ex. There are a finite number of elements on the periodic table - 118.)

Back

Finite

Front

A type of molecule formed when two or more DIFFERENT elements are chemically bonded together in fixed proportions.

Back

Compound

Front

Arranged in order of rank. (ex. atom -> molecule -> cell -> tissue -> organ -> organ system -> organism)

Back

Hierarchical

Front

The number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.

Back

Atomic Number

Front

A chart that organizes all known chemical elements by increasing atomic number into rows called periods and columns called groups. Each element's box contains its chemical symbol, name, atomic number (number of protons), and atomic mass. This arrangement reveals patterns and trends in the elements' properties, making it a fundamental tool in science.

Back

Periodic Table

Front

The mass of an atom, typically expressed in atomic mass units (amu); protons + neutrons

Back

Atomic Mass

Front

A subatomic particle found in the nucleus of every atom, carrying a positive charge. It also affects the mass.

Back

Proton

Front

A subatomic particle found in the nucleus of atoms that is neutral, meaning it has no charge. It also affects the mass.

Back

Neutron

Front

A subatomic particle with a negative charge, found in all atoms and acting as the primary carrier of electricity in solids. It affects the charge.

Back

Electron

Front

A scientific theory of the nature of matter, which states that matter is composed of discrete units called atoms and that the atom is the basic unit of an element.

Back

Atomic Theory