Atomic Structure and Periodic Table Unit Review

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 an isotope?

Back

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

Front

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

Back

Number of neutrons = Atomic mass - Atomic number.

Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of chemical elements, organized by increasing atomic number and grouped by similar properties.

Front

What are alkali metals?

Back

Alkali metals are the elements in Group 1 of the periodic table, known for being highly reactive and having one electron in their outermost shell.

Front

What is the significance of the period in the periodic table?

Back

The period indicates the number of electron shells an atom has; elements in the same period have the same number of electron shells.

Front

What is the significance of the group in the periodic table?

Back

The group indicates elements that have similar chemical properties and the same number of electrons in their outer shell.

Front

What is the electron configuration of Silicon (Si)?

Back

The electron configuration of Silicon (Si) is 1s² 2s² 2p⁶ 3s² 3p².

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, such as H for Hydrogen or O for Oxygen.