Periodic Table

Front

In the modern periodic table, elements are arranged in order of ___.

Back

increasing atomic number

Front

Why did Mendeleev leave spaces in the table he developed?

Back

he knew more elements would be discovered

Front

Based on chemical properties, iodine (I) belongs in the same group as ___? Options: Helium and Neon, Iron and Zinc, Hydrogen and Lithium, Bromine and Chlorine.

Back

Bromine and Chlorine

Front

What are 3 broad classes of elements?

Back

metals, nonmetals, and metalloids

Front

The columns on the periodic table are known as ___?

Back

Groups

Front

The colors in the diagram indicate what?

Back

chemical families -- elements with similar properties

Front

The elements colored yellow are ---

Back

metalloids

Front

The elements colored blue are ---

Back

nonmetals

Front

Which element is located in group 3, period 2?

Back

boron

Front

Which of these elements is a metalloid in period 4?

carbon

,

titanium

,

potassium

,

arsenic

Back

arsenic