Key terms & definitions

The amount or percentage of product present when equilibrium has been reached under stated conditions.

The amount of a desired product present when a reaction mixture has reached equilibrium.

Members of a wealthy Roman social order ranked immediately below senators; also called equestrians.

The owners’ financial interest in a business, equal to total assets minus total liabilities.

The point at which measured amounts of two solutions have reacted in exactly the ratio given by the balanced equation.

Fractions or decimals that represent the same value, such as $\frac25$ and $0.4$.

Expressions that have the same value for every permissible value of their variables.

A fraction with the same value as another fraction, formed by multiplying or dividing its numerator and denominator by the same non-zero number.

Fractions that have the same value even though their numerators and denominators differ.

A ratio that expresses the same comparison as another because every part has been multiplied or divided by the same non-zero number.

Ratios that have the same value because each part of one ratio has been multiplied or divided by the same non-zero number.

One resistor that could replace a combination of resistors while producing the same total resistance.

The resistance of a single resistor that could replace a combination of resistors and draw the same total current at the same potential difference.

Numbers written differently but having exactly the same value, such as $\frac12$, $0.5$ and $$.

Language with more than one possible meaning, used to mislead. The apparitions' promises encourage Macbeth to expect safety while allowing outcomes that destroy him.

The Equal Rights Amendment: a proposed change to the US Constitution prohibiting the denial of equal rights on grounds of sex.

The permanent worldwide elimination of a disease.

The dark realm below the earth associated with the dead; in the Homeric Hymn to Demeter, Hermes travels there to retrieve Persephone.

A hermit: someone who lives apart from other people, often for religious reasons.

Young Athenian women who worked on weaving Athena’s peplos.

The study of how people interact with products and environments, applied to make them safe, comfortable and easy to use.

The wearing away and removal of material by processes such as flowing water.

The removal and movement of soil, for example by rainwater or wind.

A mapped area within which coastal erosion may threaten land or other features over a stated period and under specified assumptions.

A rock transported and deposited by a glacier whose rock type differs from the local bedrock.

Input that breaks the specified rules and should be rejected, such as an out-of-range value or an unsuitable data type.

Data of the incorrect data type which should be rejected by a computer system.

A mark on a graph showing the uncertainty or spread associated with a plotted value.

Facilities that help a programmer identify and investigate errors, such as error messages, highlighted locations and debugging tools.

The range containing every possible original value that could have produced a stated rounded value.