Chemistry Fall Semester Review

Front

What is the correct formula for copper(I) cyanide?

Back

CuCN

Front

What is the weighted average of the masses of the isotopes of an element?

Back

Atomic mass

Front

What are the darker particles in an atom diagram known as?

Back

Protons

Front

Why do elements in the same group have similar chemical properties?

Back

They have the same number of valence electrons.

Front

What is a valence electron?

Back

An electron that is found in the outermost orbital of an atom.

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 of an atom?

Back

The total number of protons and neutrons in the nucleus.

Front

What is an isotope?

Back

Atoms of the same element with different numbers of neutrons.

Front

What is the periodic table?

Back

A tabular arrangement of elements organized by increasing atomic number.

Front

What is a chemical bond?

Back

A lasting attraction between atoms that enables the formation of chemical compounds.