Chemistry AP Final Exam

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What are isotopes?

Back

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons.

Front

What is an alkali metal?

Back

Alkali metals are the elements found in Group 1 of the periodic table, characterized by having one electron in their outermost shell.

Front

How do you calculate the number of neutrons in an atom?

Back

To find the number of neutrons, subtract the atomic number (number of protons) from the atomic mass (rounded to the nearest whole number).

Front

What is the significance of the atomic mass?

Back

The atomic mass is the weighted average mass of an element's isotopes, reflecting both the mass and the relative abundance of each isotope.

Front

What is the difference between an ion and an isotope?

Back

An ion is an atom that has gained or lost electrons, resulting in a charge, while an isotope is an atom with a different number of neutrons.

Front

What is the electron configuration of sodium (Na)?

Back

The electron configuration of sodium is 1s² 2s² 2p⁶ 3s¹.

Front

What are the properties of metals?

Back

Metals are typically shiny, good conductors of heat and electricity, malleable, and ductile.

Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of elements organized by increasing atomic number, showing periodic trends in properties.

Front

What is a chemical bond?

Back

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