Atom Practice

Front

Where are electrons located in the atom?

Back

Electrons are located in the Electron Cloud (Outside the Nucleus).

Front

How many neutrons are in an isotope of P-31?

Back

16 neutrons.

Front

How many neutrons does an atom of Nitrogen-13 have?

Back

6 neutrons.

Front

What is the sum of the number of neutrons and protons in an atomic nucleus called?

Back

Mass number.

Front

If X is the symbol for an element, which of the two symbols represent isotopes of the same element?

Back

I and IV.

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

What are protons?

Back

Protons are positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutrons are neutral particles found in the nucleus of an atom.

Front

What is the atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What is an isotope?

Back

Isotopes are atoms of the same element that have different numbers of neutrons.