Basic Concepts of Atomic Structure

Front

What are the three subatomic particles and where are they located?

Back

Protons (nucleus), Neutrons (nucleus), Electrons (orbitals)

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the mass number?

Back

The total number of protons and neutrons in an atom's nucleus.

Front

What are isotopes?

Back

Atoms of the same element with different numbers of neutrons.

Front

What is an ion?

Back

An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.

Front

What is the difference between a cation and an anion?

Back

Cation: positively charged ion; Anion: negatively charged ion.

Front

What are elements in the same group called, and what do they share?

Back

They are called 'groups' and share similar chemical properties.

Front

List Groups 1, 2, 17, and 18 and their properties.

Back

Group 1: Alkali metals, highly reactive; Group 2: Alkaline earth metals, reactive; Group 17: Halogens, very reactive nonmetals; Group 18: Noble gases, non-reactive.

Front

What do periods on the periodic table represent?

Back

The number of electron shells in the atoms of the elements.

Front

What are properties of metals?

Back

Good conductors of heat and electricity, malleable, ductile, shiny.