Periodic Table

Front

In the modern periodic table, elements are arranged by:

Back

atomic number

Front

How did Mendeleev arrange the elements?

Back

atomic mass

Front

Which element is represented by the symbol 'Li'?

Back

Lithium

Front

Which group of the periodic table is composed of inert (not reactive) gases?

Back

Noble gases

Front

What element is represented by the symbol 'Si'?

Back

Silicon

Front

What is the atomic number of Carbon (C)?

Back

6

Front

What are the vertical columns in the periodic table called?

Back

Groups or families

Front

What are the horizontal rows in the periodic table called?

Back

Periods

Front

Which group contains the most reactive metals?

Back

Alkali metals

Front

What is the main characteristic of noble gases?

Back

They are inert and do not readily react with other elements.