CMS 8th Grade Chemistry Review

Front

What are Alkali Earth Metals?

Back

Alkali Earth Metals are elements found in group 2 of the periodic table. They are highly reactive and include elements like Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium (Ba), and Radium (Ra).

Front

What is an Element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. Examples include Hydrogen (H), Oxygen (O), and Neon (Ne).

Front

How many energy shells does Barium (Ba) have?

Back

Barium (Ba) has 6 energy shells.

Front

What are the rows of the periodic table called?

Back

The rows of the periodic table are called periods.

Front

What are Metalloids?

Back

Metalloids are elements that have properties of both metals and non-metals. Examples include Silicon (Si) and Arsenic (As).

Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of chemical elements, organized by increasing atomic number, electron configuration, and recurring chemical properties.

Front

What is the atomic number?

Back

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

Front

What are the main groups of the periodic table?

Back

The main groups of the periodic table include Alkali Metals, Alkaline Earth Metals, Transition Metals, Halogens, and Noble Gases.

Front

What are Noble Gases?

Back

Noble Gases are elements in group 18 of the periodic table that are colorless, odorless, and inert. Examples include Helium (He), Neon (Ne), and Argon (Ar).

Front

What is a Compound?

Back

A compound is a substance formed when two or more elements chemically bond together. Examples include Water (H2O) and Carbon Dioxide (CO2).