Mid-Term Exam Review. Bondx, Reactions, Matter and Stoichiometry

Front

Most of the mass in an atom is made up of _____________________?

Back

Protons and neutrons.

Front

An element with a mass number of 11 and an atomic number of 5 has how many neutrons?

Back

6.

Front

What is the atomic number of this atom?

Back

3.

Front

Which category of elements usually form negative ions?

Back

Nonmetals.

Front

How many electrons does this atom have?

Back

6.

Front

What are protons?

Back

Positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutral particles found in the nucleus of an atom.

Front

What are electrons?

Back

Negatively charged particles that orbit the nucleus of an atom.

Front

What is an atomic number?

Back

The number of protons in the nucleus of an atom.

Front

What is a mass number?

Back

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