Semester Exam Review

Front

What charge does lithium typically form when it becomes an ion?

Back

Lithium typically forms a cation with a +1 charge.

Front

What is the correct electron configuration for chlorine (Cl)?

Back

1s^2 2s^2 2p^6 3s^2 3p^5.

Front

How are elements arranged in the modern periodic table?

Back

Elements are arranged in order of increasing atomic number.

Front

What is the subatomic particle with a negative charge?

Back

Electron.

Front

What property of ionic compounds is due to strong electrostatic interactions?

Back

High melting and boiling points.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

Define an ion.

Back

An ion is an atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

Front

What is the difference between cations and anions?

Back

Cations are positively charged ions, while anions are negatively charged ions.

Front

What is the significance of the periodic table's groups?

Back

Elements in the same group have similar chemical properties and the same number of valence electrons.

Front

What is the role of neutrons in an atom?

Back

Neutrons contribute to the atomic mass and stabilize the nucleus.