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 of that element.

Front

How can you find the number of neutrons in an atom?

Back

The number of neutrons can be found by subtracting the atomic number from the atomic mass (rounded to the nearest whole number).

Front

What is the significance of the periodic table's arrangement?

Back

The periodic table is arranged by increasing atomic number, which reflects the periodic trends in element properties.

Front

What are groups in the periodic table?

Back

Groups are vertical columns in the periodic table that contain elements with similar chemical properties.

Front

What are periods in the periodic table?

Back

Periods are horizontal rows in the periodic table that indicate the number of electron shells in the elements.

Front

What are noble gases and why are they unique?

Back

Noble gases are elements in group 18 that are chemically inert due to having a full outer electron shell.

Front

Which element has the atomic number 1?

Back

Hydrogen (H) has the atomic number 1.

Front

What is the general trend of reactivity in the alkali metals?

Back

Reactivity increases as you move down the group in alkali metals.

Front

What is the difference between metals and nonmetals in the periodic table?

Back

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

Front

What is the role of valence electrons in chemical bonding?

Back

Valence electrons are the outermost electrons that participate in chemical bonding and determine an element's reactivity.