Atoms and the Periodic Table Review

Front

Identify the element this atom represents: Nitrogen

Back

Nitrogen is a chemical element with the symbol N and atomic number 7.

Front

Which atom has 4 neutrons?

Back

Li-7 has 4 neutrons (3 protons + 4 neutrons = atomic mass of 7).

Front

What does the 6 represent in an atomic symbol?

Back

The 6 represents the atomic number, which indicates the number of protons in the atom.

Front

How many electrons are in the first energy level?

Back

There are 2 electrons in the first energy level.

Front

How many protons does Lithium have?

Back

Lithium has 3 protons.

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of elements organized by increasing atomic number.

Front

What is atomic mass?

Back

Atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).

Front

What is the difference between atomic number and atomic mass?

Back

Atomic number is the number of protons in an atom, while atomic mass is the total number of protons and neutrons.

Front

What are neutrons?

Back

Neutrons are neutral particles found in the nucleus of an atom, contributing to its mass.