Chemistry Final Exam Review (Full)

Front

What is the identity of a metal sample with a mass of 5.2 g that absorbs 20.0 J of energy when heated from 30.0°C to 40.0°C?

Back

The metal is copper.

Front

How many valence electrons does a neutral atom with the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁴ have?

Back

The atom has 6 valence electrons.

Front

What are the correct names for the ions formed when sodium chloride is placed in water?

Back

The sodium ion is the cation, and the chloride ion is the anion.

Front

How is copper (Cu) classified based on its location on the periodic table?

Back

Copper is classified as a transition metal.

Front

How many electrons are in the outermost energy level of a neutral carbon atom?

Back

A neutral carbon atom has 4 electrons in its outermost energy level.

Front

What is the definition of a cation?

Back

A cation is a positively charged ion that has lost one or more electrons.

Front

What is the definition of an anion?

Back

An anion is a negatively charged ion that has gained one or more electrons.

Front

What is the significance of valence electrons in chemical bonding?

Back

Valence electrons determine how an atom can bond with other atoms.

Front

What is the electron configuration for a neutral oxygen atom?

Back

The electron configuration for a neutral oxygen atom is 1s² 2s² 2p⁴.

Front

What is the periodic trend for atomic radius as you move down a group?

Back

Atomic radius increases as you move down a group due to the addition of electron shells.