The Atom and Periodic Trends

Front

What are the main components of an atom?

Back

Protons, Neutrons, and Electrons.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of a neutron?

Back

Neutral.

Front

What is the charge of an electron?

Back

Negative.

Front

What is the nucleus of an atom?

Back

The center of an atom that contains protons and neutrons.

Front

What is atomic mass?

Back

The weighted average mass of an element's isotopes.

Front

What is ionization energy?

Back

The energy required to remove an electron from an atom.

Front

Which element has a higher ionization energy: Sodium (Na) or Chlorine (Cl)?

Back

Chlorine (Cl).

Front

What is the periodic table?

Back

A tabular arrangement of elements organized by increasing atomic number.

Front

What is the significance of the atomic number?

Back

It represents the number of protons in an atom and defines the element.