Fall Midterm Review

Front

Why does the radius of an atom increase going down a group?

Back

The attraction between the nucleus and electrons decreases due to the addition of electron shells.

Front

What is an anion?

Back

A negatively charged ion.

Front

What is the name of FeCl₂?

Back

Iron (II) chloride.

Front

How do you calculate the average atomic mass of an element?

Back

Multiply the mass of each isotope by its relative abundance (as a decimal) and sum the results.

Front

What do isotopes of an element have in common?

Back

They have the same atomic number and electrons.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the difference between an ion and a neutral atom?

Back

An ion has a net charge due to the loss or gain of electrons, while a neutral atom has an equal number of protons and electrons.

Front

What is the significance of the mass number?

Back

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

Front

What is a cation?

Back

A positively charged ion.

Front

How do you determine the charge of an ion?

Back

The charge is determined by the difference between the number of protons and electrons.