Criss-cross method

Front

What is the criss-cross method used for in chemistry?

Back

The criss-cross method is used to determine the formula of ionic compounds by balancing the charges of the ions involved.

Front

What is the formula for the ionic compound formed from Ba⁺³ and Cl^-?

Back

BaCl₃

Front

Define an ionic bond.

Back

An ionic bond is the attraction that holds oppositely charged ions together.

Front

What is the formula for the ionic compound formed from Ag⁺ and Br^-?

Back

AgBr

Front

How do potassium and sulfur bond together?

Back

K₂S

Front

What charge does an atom that loses electrons in an ionic bond become?

Back

Positively charged ion.

Front

What is the charge of a chloride ion?

Back

Negatively charged (-1).

Front

What is the charge of a barium ion?

Back

Positively charged (+2).

Front

What is the significance of the criss-cross method in writing chemical formulas?

Back

It helps ensure that the total positive and negative charges are balanced in the compound.

Front

What is the formula for the ionic compound formed from Na⁺ and O^2-?

Back

Na₂O