Chemistry-1

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 metals?

Back

Metals are elements that are shiny, conduct electricity and heat, and are malleable and ductile.

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

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 (families) in the periodic table?

Back

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

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 is the electron configuration of Neon?

Back

The electron configuration of Neon is 1s² 2s² 2p⁶.

Front

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

Back

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

Front

What is the difference between a metal and a nonmetal?

Back

Metals are typically shiny and good conductors of heat and electricity, while nonmetals are dull and poor conductors.

Front

What is a chemical symbol?

Back

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