Chemistry Review

Front

What are cathode rays?

Back

Cathode rays are streams of electrons observed in vacuum tubes, which led to the discovery of the electron.

Front

What is an atom?

Back

An atom is the smallest unit of matter that maintains its chemical identity.

Front

What is the shorthand electron configuration for a Sulfur atom?

Back

The shorthand electron configuration for a Sulfur atom is [Ne] 3s² 3p⁴.

Front

What is the mass number of an atom?

Back

The mass number is defined as the total number of protons and neutrons in an atom's nucleus.

Front

How many d orbitals are in the d subshell?

Back

There are 5 d orbitals in the d subshell.

Front

What is the charge of an electron?

Back

An electron has a negative charge of -1.

Front

What is the nucleus of an atom?

Back

The nucleus is the central part of an atom, containing protons and neutrons.

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 made of two or more different types of atoms chemically bonded together.

Front

What is the periodic table?

Back

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

Front

What is an ion?

Back

An ion is an atom or molecule that has gained or lost one or more electrons, resulting in a net charge.