Unit 4 Retest

Front

What is the formula for barium hydroxide?

Back

Ba(OH)₂

Front

Write the chemical formula for strontium nitride.

Back

Sr₃N₂

Front

What percentage of the total atomic mass of magnesium bromide (MgBr₂) is composed of bromine?

Back

87%

Front

What is the formula for beryllium iodide?

Back

BeI₂

Front

Name the compound ScCl₂.

Back

Scandium (II) chloride

Front

What is the chemical formula for calcium sulfate?

Back

CaSO₄

Front

Define ionic compound.

Back

A compound formed by the electrostatic attraction between oppositely charged ions.

Front

What is the formula for aluminum oxide?

Back

Al₂O₃

Front

How do you determine the number of valence electrons in an element?

Back

By looking at its group number in the periodic table.

Front

What is the significance of the subscript in a chemical formula?

Back

It indicates the number of atoms of each element in a molecule.