Unit 3 Test (Part 1) RETAKE TEST: Periodic Table

Front

Who was the first scientist to organize all known elements into a periodic table in 1869?

Back

Dmitri Mendeleev

Front

In which group of the periodic table are noble gases found?

Back

Group 8A (column 18)

Front

Which element is considered a metalloid based on its location on the Periodic Table?

Back

Silicon (Si)

Front

Which element is considered a metal based on its location on the Periodic Table?

Back

Sodium (Na)

Front

What was the primary basis for Mendeleev's organization of the Periodic Table?

Back

Atomic weight

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

What is the significance of the atomic number in the periodic table?

Back

It determines the identity of an element and its position in the periodic table.

Front

What are alkali metals and where are they located in the periodic table?

Back

They are found in Group 1A (column 1) and are highly reactive.

Front

What are the characteristics of noble gases?

Back

They are colorless, odorless, and inert under standard conditions.