PS 4.1 atoms

Front

What is the atomic number of an element?

Back

The atomic number is the total number of protons in the nucleus of an atom.

Front

What particles are found in the nucleus of an atom?

Back

The nucleus of an atom contains protons and neutrons.

Front

Identify the atomic number in the following: 5, 10.811

Back

5 is the atomic number.

Front

Which particles change the charge in atoms when ions are formed?

Back

Electrons are the particles that change the charge in atoms when ions are formed.

Front

What is the atomic mass of Fluorine (F)?

Back

The atomic mass of Fluorine (F) is approximately 18.99.

Front

Define an atom.

Back

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

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of a neutron?

Back

A neutron has no charge (it is neutral).

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

How do you calculate the atomic mass of an element?

Back

The atomic mass is calculated by adding the number of protons and neutrons in the nucleus.