Unit 3 Atomic Structure Review

Front

What is a vertical column in the periodic table called?

Back

Group

Front

Who first proposed that everything in the world was made up of tiny particles?

Back

Democritus

Front

What do positive ions have in relation to electrons?

Back

Positive ions have more protons than electrons.

Front

How is nitrogen located in the periodic table?

Back

Nitrogen has one more proton than carbon, so it is located after carbon, and it is a non-metal, so it is located on the right side of the periodic table.

Front

Who developed the Plum Pudding Model of the atom?

Back

JJ Thompson

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 charge of a neutron?

Back

Neutrons have no charge (they are neutral).

Front

What is the difference between an atom and an ion?

Back

An atom is neutral, while an ion has a positive or negative charge due to the loss or gain of electrons.

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their atomic number and properties, allowing for the prediction of chemical behavior.

Front

What are the three main subatomic particles?

Back

Protons, neutrons, and electrons.