Periodic table and trends

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 difference between protons, neutrons, and electrons?

Back

Protons are positively charged particles, neutrons have no charge, and electrons are negatively charged particles.

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 elements organized by increasing atomic number, showing periodic trends.

Front

What are periods in the periodic table?

Back

Periods are the horizontal rows in the periodic table, indicating the number of electron shells in the elements.

Front

What are groups in the periodic table?

Back

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

Front

What is atomic mass?

Back

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

Front

What is an isotope?

Back

Isotopes are atoms of the same element that have the same number of protons but different numbers of neutrons.

Front

What is the significance of the element's position in the periodic table?

Back

The position of an element in the periodic table helps predict its chemical behavior and properties.

Front

What is a metal?

Back

Metals are elements that are typically shiny, good conductors of heat and electricity, and malleable.