UNIT 3 - Review

Front

What is the behavior of electrons in relation to their energy levels?

Back

Electrons closer to the nucleus have less energy than electrons further from the nucleus.

Front

What is ionization energy?

Back

The energy required to remove one electron from a neutral atom of an element.

Front

What are the characteristics of the electron cloud?

Back

The electron cloud is negatively charged, contains nearly all of the atom's volume, and is divided into energy levels, but it does not contain nearly all of the atom's mass.

Front

What happens to electrons in anions?

Back

Anions have gained electrons and thus have a negative charge.

Front

What type of bond is formed when there is a large difference in electronegativity (e.g., 2.34) between two atoms?

Back

Ionic bond.

Front

Define electronegativity.

Back

Electronegativity is the tendency of an atom to attract electrons in a chemical bond.

Front

What is the significance of the ground state of an electron?

Back

The ground state is the lowest energy state of an electron in an atom.

Front

What occurs when an electron moves from an excited state to a ground state?

Back

Light can be emitted.

Front

What is the relationship between energy levels and electron movement?

Back

Electrons need to absorb energy to move to a higher energy level away from the nucleus.

Front

What is the charge of an electron?

Back

Electrons have a negative charge.