Chemistry Semester One Review

Front

What is Atomic Mass?

Back

The weighted average mass of an element's isotopes, measured in atomic mass units (amu). For example, the atomic mass of Iron (Fe) is approximately 55.845.

Front

What is an orbital diagram?

Back

A visual representation of the arrangement of electrons in an atom's orbitals, showing the distribution of electrons among the various orbitals.

Front

What is ionization energy?

Back

The energy required to remove an electron from a gaseous atom or ion. It is a measure of how strongly an atom holds onto its electrons.

Front

What is the electron configuration of an oxygen atom?

Back

1s² 2s² 2p⁴, indicating that oxygen has 8 electrons distributed in its orbitals.

Front

How many electrons can the first energy level hold?

Back

The first energy level can hold a maximum of 2 electrons.

Front

What is the maximum number of electrons in the second energy level?

Back

The second energy level can hold a maximum of 8 electrons.

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their atomic number, electron configurations, and recurring chemical properties.

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 a substance formed when two or more different elements chemically bond together.

Front

What is a chemical bond?

Back

A chemical bond is a lasting attraction between atoms, ions, or molecules that enables the formation of chemical compounds.

Front

What is the octet rule?

Back

The octet rule states that atoms tend to gain, lose, or share electrons to achieve a full outer shell of 8 electrons, leading to greater stability.