Atomic structure, periodic trends, and bonding

Front

What is a covalent bond?

Back

A covalent bond is a type of chemical bond where two atoms share one or more pairs of electrons.

Front

What is the atomic number of an element?

Back

The atomic number of an element is the number of protons in the nucleus of an atom of that element.

Front

Who discovered the electron?

Back

J.J. Thomson discovered the electron.

Front

What is the structure of an atom primarily composed of?

Back

Most of the atom is composed of empty space.

Front

What are metals?

Back

Metals are elements that are good conductors of heat and electricity, malleable, ductile, and often have a shiny appearance.

Front

What is the nucleus of an atom?

Back

The nucleus is the central part of an atom, containing protons and neutrons.

Front

What is an ion?

Back

An ion is an atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

Front

What is the difference between a metal and a nonmetal?

Back

Metals are typically good conductors and malleable, while nonmetals are poor conductors and brittle.

Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of elements, organized by increasing atomic number and grouped by similar chemical properties.

Front

What is a metalloid?

Back

Metalloids are elements that have properties of both metals and nonmetals.