Periodic Table Flashcard #1

Front

In the modern periodic table, elements are arranged by:

Back

increasing atomic number

Front

The atoms along the staircase are called

Back

metalloids

Front

Why did Mendeleev leave blanks in his periodic table?

Back

left room for elements not yet discovered

Front

Which is not a metal? cadmium (Cd), indium (In), seaborgium (Sg), selenium (Se)

Back

selenium (Se)

Front

Which element conducts electricity the best?

Back

Silver

Front

What group is Oxygen in?

Back

16

Front

The horizontal rows on the periodic table are called:

Back

Periods

Front

The vertical columns on the periodic table that have common properties are called

Back

Groups

Front

Elements that are gases, brittle, and not conductive are

Back

Non-metals

Front

Most elements on the periodic table are classified as __________.

Back

Metals