vocab pre-test

Front

Sublimation

Back

The process of a solid changing directly to a vapor without forming a liquid.

Front

Allotrope

Back

Different forms of the same element that have different molecular structures.

Front

Nonmetal

Back

An element that usually is a gas or brittle solid at room temperature.

Front

Semiconductor

Back

An element that can conduct electricity under certain conditions.

Front

React

Back

To respond to a stimulus; to exert a counteracting or reciprocal force.

Front

Diatomic Molecule

Back

A molecule composed of two atoms, which can be of the same or different chemical elements.

Front

Metalloid

Back

An element that has properties of both metals and nonmetals.

Front

Transuranium Element

Back

Elements that have atomic numbers greater than that of uranium (92).

Front

Chemical Reaction

Back

A process that leads to the transformation of one set of chemical substances to another.

Front

Physical Change

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.