Regents Review for Atomic Structure

Front

What particle determines the identity of an element?

Back

Proton

Front

What happens to an electron when it moves to its excited state?

Back

It moves away from the nucleus.

Front

What did the gold foil experiment suggest about the structure of the atom?

Back

Most of the atom is made up of empty space.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of an electron?

Back

Negative.

Front

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

Back

Approximately equal.

Front

What is Dalton's atomic theory?

Back

It states that all matter is made of atoms, which are indivisible and indestructible.

Front

Which of Dalton's theories was incorrect?

Back

All atoms are identical.

Front

What is the nucleus of an atom composed of?

Back

Protons and neutrons.

Front

What is the role of electrons in an atom?

Back

They are involved in chemical bonding and reactions.