Chemistry '23 MIDTERM Retake

Front

What is the atomic number of Oxygen?

Back

The atomic number of Oxygen is 8, which indicates it has 8 protons.

Front

What are the three subatomic particles in an atom?

Back

Protons, Neutrons, and Electrons.

Front

How many neutrons are in an Oxygen atom?

Back

Oxygen has 8 neutrons.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded and can be separated by physical means.

Front

What is the charge of an electron?

Back

The charge of an electron is -1.

Front

How many electrons does an O^{2-} ion have?

Back

An O^{2-} ion has 10 electrons.

Front

What is distillation?

Back

Distillation is a separation process that relies on differences in boiling points of substances.

Front

What is the difference between a pure substance and a mixture?

Back

A pure substance has a uniform and definite composition, while a mixture contains two or more substances that retain their individual properties.

Front

What is the significance of boiling points in separation techniques?

Back

Different boiling points allow substances to be separated through processes like distillation.