Chemistry Concepts Flashcards

Front

frequency

Back

_____ is the number of occurrences of a repeating event per unit time

Front

pure spectral color

Back

A ______is a color that is evoked by a single wavelength of light in the visible spectrum, or by a relatively narrow band of wavelengths, also known as monochromatic light

Front

halogens

Back

The ____ elements are a group in the periodic table consisting of five chemically related elements: fluorine , chlorine , bromine , iodine , and astatine

Front

ionized

Back

______ is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons to form ions, often in conjunction with other chemical changes

Front

metal

Back

A ____is a material that is typically hard, opaque, shiny, and has good electrical and thermal conductivity

Front

element

Back

In mathematics, an ____, or member, of a set is any one of the distinct objects that make up that set

Front

metalloids

Back

A ______ is any chemical element which has properties in between those of metals and nonmetals, or that has a mixture of them

Front

Alkaline earth metals

Back

The ______ are six chemical elements in column 2 of the Periodic table

Front

atom

Back

An ____ is the smallest constituent unit of ordinary matter that has the properties of a chemical element

Front

electron shell

Back

In chemistry and atomic physics, an ____, or a principal energy level, may be thought of as an orbit followed by electrons around an atom's nucleus