Atomic Structure and Periodic Table

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 periods in the periodic table?

Back

Periods are the horizontal rows in the periodic table, indicating the number of electron shells an atom has.

Front

What are groups (or families) in the periodic table?

Back

Groups are the vertical columns in the periodic table, containing elements with similar chemical properties.

Front

What is a neutron?

Back

A neutron is a subatomic particle found in the nucleus of an atom, with no electric charge.

Front

What is the relative mass of a neutron?

Back

The relative mass of a neutron is approximately 1 atomic mass unit (amu).

Front

What is the difference between metals and non-metals?

Back

Metals are typically shiny, conductive, and malleable, while non-metals are usually dull, insulative, and brittle.

Front

What is an isotope?

Back

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

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 element has the atomic number 1?

Back

Hydrogen is the element with the atomic number 1.

Front

What is the mass number of an atom?

Back

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