Chem '24-'25 Semester 1 Review

Front

What does the number 84 in the name krypton-84 represent?

Back

The mass number.

Front

An ion with a negative charge is called a...?

Back

Anion.

Front

What kind of physical property is volume?

Back

Extensive.

Front

If a Sulfur atom gains 2 electrons, what will be its charge?

Back

-2.

Front

For an electron to change from ground state to an excited state, it must...?

Back

Absorb energy.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus.

Front

Define cation.

Back

An ion with a positive charge.

Front

What is the difference between intensive and extensive properties?

Back

Intensive properties do not depend on the amount of substance, while extensive properties do.

Front

What is the significance of the mass number?

Back

It represents the total number of protons and neutrons in an atom.

Front

What happens to an atom when it loses an electron?

Back

It becomes a cation.