Atomic Structure & History

Front

What are subatomic particles?

Back

Electrons, protons, and neutrons.

Front

What number indicates the nucleus?

Back

4.

Front

An atom of the element with atomic number 6 always has _____

Back

Six protons in its nucleus.

Front

In Dalton's Atomic Theory, all elements consist of __________ that cannot be divided.

Back

Atoms.

Front

The number in the upper corner of an element tile (7 for nitrogen) is called _____

Back

The atomic number.

Front

What is the charge of a proton?

Back

Positive charge.

Front

What is the charge of an electron?

Back

Negative charge.

Front

What is the mass of a neutron compared to a proton?

Back

Approximately equal.

Front

What is the nucleus of an atom composed of?

Back

Protons and neutrons.

Front

What does the atomic number represent?

Back

The number of protons in an atom.