Forming Ionic Compounds w/ Polyatomics

Front

What is an ionic compound?

Back

An ionic compound is a chemical compound composed of ions held together by electrostatic forces termed ionic bonding. It typically forms between metals and nonmetals.

Front

What is the charge of a potassium ion (K+)?

Back

+1

Front

What does the subscript in a chemical formula indicate?

Back

The subscript indicates the number of atoms of the element in the compound. For example, in CaBr₂, the '2' indicates there are 2 bromide ions for every calcium ion.

Front

What is the formula for the ionic compound formed from calcium (Ca) and bromine (Br)?

Back

CaBr₂

Front

What is a polyatomic ion?

Back

A polyatomic ion is a charged ion composed of two or more atoms covalently bonded together, which can act as a single unit in chemical reactions.

Front

What is the formula for the ionic compound formed from iron (Fe) with a +3 charge and hydroxide (OH-)?

Back

Fe(OH)₃

Front

How do you determine the formula of an ionic compound?

Back

To determine the formula, balance the total positive and negative charges of the ions to ensure the compound is neutral.

Front

What is the charge of a lithium ion (Li+)?

Back

+1

Front

What is the formula for the ionic compound formed from strontium (Sr) and chlorine (Cl)?

Back

SrCl₂

Front

What does the formula KCN represent?

Back

KCN represents the ionic compound formed from potassium ions (K+) and cyanide ions (CN-).