Fall Final 24 Regular

Front

What are the elements of group 2A (2) known as?

Back

Alkaline earth metals.

Front

What are the elements of group 17 (7A) known as?

Back

Halogens.

Front

Elements in the same group (vertical columns) have similar ______ because of the same _____.

Back

Properties, # of valence e-'s.

Front

What is the charge on a gamma ray?

Back

0.

Front

Which substance represents a compound?

Back

CO(g).

Front

Define alkaline earth metals.

Back

Group 2A elements that are reactive and have two valence electrons.

Front

Define halogens.

Back

Group 17 elements that are highly reactive nonmetals.

Front

What is the significance of valence electrons in chemical properties?

Back

Valence electrons determine how an element reacts with others.

Front

What is a compound?

Back

A substance formed when two or more elements chemically bond together.

Front

What is the difference between an element and a compound?

Back

An element is a pure substance made of one type of atom, while a compound is made of two or more different atoms.