Atomic Theory Review

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

How many electrons does a neutral atom of Silicon (Si) have?

Back

A neutral atom of Silicon has 14 electrons.

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

What is the atomic number of Neon (Ne)?

Back

The atomic number of Neon is 10.

Front

What subatomic particle has a positive charge?

Back

A proton has a positive charge.

Front

What is the mass number of an atom?

Back

The mass number is the total number of protons and neutrons in an atom's nucleus.

Front

What is an isotope?

Back

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons.

Front

How many protons does Titanium (Ti) have?

Back

Titanium has 22 protons.

Front

What is the role of neutrons in an atom?

Back

Neutrons help stabilize the nucleus of an atom and do not have a charge.

Front

What element is represented by the symbol 'Ar'?

Back

The symbol 'Ar' represents the element Argon.