Front

What is the organization of elements on the Periodic Table based on?

Back

Atomic number.

Front

How is atomic mass defined in terms of nuclear particles?

Back

It is the measure of the nuclear particles, specifically protons + neutrons.

Front

Which two particles in an atom have a mass of 1 amu?

Back

Protons and neutrons.

Front

In neutral atoms of the same element, what is always the same number?

Back

Protons and electrons.

Front

What does the atomic number of an element represent?

Back

The number of protons in an atom of that element.

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 significance of the atomic mass unit (amu)?

Back

It is a standard unit of mass that quantifies mass on an atomic or molecular scale.

Front

How do isotopes of an element differ from each other?

Back

They have the same number of protons but different numbers of neutrons.