Exit Ticket - Counting Protons, Neutrons, and Electrons

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 do you determine the number of electrons in a neutral atom?

Back

In a neutral atom, the number of electrons is equal to the number of protons.

Front

What is a neutron?

Back

A neutron is a neutrally charged particle found in the nucleus of an atom.

Front

What is the mass number of an atom?

Back

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

Front

How many protons are in a neutral atom of Carbon-12?

Back

There are 6 protons in a neutral atom of Carbon-12.

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

If an atom has 15 protons, what element is it?

Back

The element is Phosphorus.

Front

How do you calculate the number of neutrons in an atom?

Back

Subtract the atomic number (number of protons) from the mass number.

Front

What is the relationship between protons and electrons in a neutral atom?

Back

In a neutral atom, the number of protons equals the number of electrons.

Front

How many neutrons are in a neutral atom of Nitrogen-14?

Back

There are 7 neutrons in a neutral atom of Nitrogen-14.