Unit 1 Flashcards

Front

Atom

Back

The smallest particle of an element; made of electrons, protons, and neutrons.

Front

Chemical Formula

Back

A shorthand notation that uses chemical symbols and numbers as subscripts to represent the type and number of atoms that are present in the smallest unit of a substance.

Front

Chemical Symbol

Back

A one- or two-letter notation used to represent an atom of a particular element.

Front

Coefficient

Back

A number placed in front of a chemical symbol or formula that represents the number of molecules.

Front

Compound

Back

A new substance with unique chemical and physical properties formed when two or more elements are chemically bonded during a chemical reaction.

Front

Element

Back

A pure substance composed of the same type of atom throughout.

Front

Molecule

Back

The simplest unit of a chemical compound that can exist, formed when two or more atoms join together chemically.

Front

Periodic Table of Elements

Back

A table in which all the known elements are arranged by properties and are represented by chemical symbols.

Front

Structure

Back

The arrangement of parts that form a living thing.

Front

Subscript

Back

A number written below and to the right of a chemical symbol that shows the number of a specific type of atom present.