Periodic Table - full unit

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 is the atomic mass of an element?

Back

The atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).

Front

What are noble gases?

Back

Noble gases are a group of elements in Group 18 of the periodic table that are chemically inert and do not readily react with other elements.

Front

What is alpha decay?

Back

Alpha decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle, resulting in a new element.

Front

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

Back

The number of neutrons can be found by subtracting the atomic number from the atomic mass.

Front

What is the significance of the periodic table?

Back

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

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 the difference between metals and nonmetals?

Back

Metals are typically shiny, conductive, and malleable, while nonmetals are usually dull, insulative, and brittle.

Front

What is a chemical symbol?

Back

A chemical symbol is a one or two-letter notation used to represent an element on the periodic table.

Front

What are alkali metals?

Back

Alkali metals are highly reactive elements found in Group 1 of the periodic table, including lithium, sodium, and potassium.