Semester 1 Final Review

Front

How many valence electrons does Oxygen have?

Back

Oxygen has 6 valence electrons.

Front

How many neutrons does Phosphorus have? (Hint: M-A=N)

Back

Phosphorus has 16 neutrons.

Front

If an element gains 3 electrons, what is its ionic charge?

Back

The ionic charge would be 3-.

Front

What is a compound?

Back

A compound is a pure substance composed of two or more different elements chemically bonded together.

Front

In a compound, which is written first: cation or anion?

Back

The cation (metal) is written first.

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 difference between an element and a compound?

Back

An element is a pure substance made of only one type of atom, while a compound is made of two or more different types of atoms chemically bonded.

Front

What is an ion?

Back

An ion is an atom or molecule that has gained or lost one or more electrons, resulting in a net charge.

Front

What is the charge of a cation?

Back

A cation has a positive charge.

Front

What is the charge of an anion?

Back

An anion has a negative charge.