Atomic Model Practice

Front

What is the charge on the electron?

Back

Negative.

Front

What is the definition of an atom?

Back

The basic unit of a chemical element.

Front

What makes up the nucleus of an atom?

Back

Protons and neutrons.

Front

Which subatomic particle determines the name of the element?

Back

Proton.

Front

Who first stated that all the atoms of a particular element are identical but different from the atoms of all other elements?

Back

Dalton.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the mass of a neutron compared to a proton?

Back

Approximately equal.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the role of electrons in an atom?

Back

They are involved in chemical bonding and reactions.

Front

What is an isotope?

Back

Atoms of the same element with different numbers of neutrons.