Structure of an Atom

Front

What is atomic mass?

Back

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

Front

How many neutrons does an atom with atomic mass 12 and atomic number 6 have?

Back

6 neutrons.

Front

What are the positive particles of an atom called?

Back

Protons.

Front

If an atom has an atomic number of 6, how many protons does it have?

Back

6 protons.

Front

What is the chemical symbol for magnesium?

Back

Mg.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of an electron?

Back

Negative.

Front

What is the nucleus of an atom?

Back

The nucleus is the central part of an atom, containing protons and neutrons.

Front

What are neutrons?

Back

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

Front

What is the atomic number of an element?

Back

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