Honors Chem Form A 2024 Midterm Exam

Front

What are the vertical columns on the periodic table called?

Back

Groups.

Front

Which group of nonmetals is the most reactive?

Back

Halogens.

Front

What is the electron configuration of an oxygen ion?

Back

1s² 2s² 2p⁶.

Front

In Group 2 elements, where are the valence electrons located?

Back

In the s sublevel.

Front

Convert the number 450,000 to scientific notation.

Back

4.5 x 10⁵.

Front

What is the definition of a period in the periodic table?

Back

A horizontal row of elements.

Front

What are noble gases known for?

Back

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

Front

What is the significance of valence electrons?

Back

They determine an element's chemical properties and reactivity.

Front

What is the general trend of reactivity in Group 1 elements?

Back

Reactivity increases as you move down the group.

Front

What is the electron configuration for a sodium ion (Na⁺)?

Back

1s² 2s² 2p⁶.