IPS Chapter 15 Flashcard

Front

Define atomic mass

Back

Average mass of all isotopes of an atom.

Front

Noble gases are called the ____________ gases.

Back

inert.

Front

On a periodic table, the rows are called _________________

Back

periods.

Front

How many periods are there in the periodic table?

Back

7.

Front

A vertical column is called...

Back

group.

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom.

Front

What are isotopes?

Back

Atoms of the same element with different numbers of neutrons.

Front

What is the significance of the periodic table?

Back

It organizes elements based on their properties and atomic structure.

Front

What are the main categories of elements on the periodic table?

Back

Metals, nonmetals, and metalloids.

Front

What is a chemical symbol?

Back

A one or two-letter abbreviation for an element.