Chapter 16

Front

What is the smallest particle of an element that still represents that element?

Back

atom

Front

What is the center of an atom called?

Back

nucleus

Front

What is the atomic number of sodium?

Back

11

Front

Who created the original periodic table?

Back

Mendeleev

Front

Where do electrons 'live' in an atom?

Back

The electron cloud

Front

What is the definition of atomic number?

Back

The number of protons in the nucleus of an atom.

Front

What is mass number?

Back

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

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of an electron?

Back

Negative.

Front

What is the charge of a neutron?

Back

Neutral.