Module 16/17 Review

Front

How many valence electrons does sodium have?

Back

Sodium has 1 valence electron.

Front

How many protons are in an atom of Nitrogen-16?

Back

An atom of Nitrogen-16 has 7 protons.

Front

How many neutrons are in 1 atom of Carbon-13?

Back

1 atom of Carbon-13 has 7 neutrons.

Front

Different isotopes of an element contain different numbers of ___?

Back

Different isotopes of an element contain different numbers of neutrons.

Front

Who proposed that atoms are indivisible (cannot be broken down)?

Back

John Dalton proposed that atoms are indivisible.

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons 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 an atom's nucleus.

Front

What is an isotope?

Back

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

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of a neutron?

Back

A neutron has no charge (neutral).