Semester Review Ionic, Covalent, and EMS and sig figs

Front

What is the formula for Magnesium Hydroxide?

Back

Mg(OH)₂

Front

What are electrons that are free to move in metals called?

Back

Delocalized electrons

Front

What is the ability of a substance to be pulled into a thin strand?

Back

Ductility

Front

What is the name of the compound (NH₄)₃PO₄?

Back

Ammonium phosphate

Front

What is the name of the compound P₂O₅?

Back

Diphosphorous pentoxide

Front

Define ionic compound.

Back

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

Front

Define covalent bond.

Back

A chemical bond formed by the sharing of electron pairs between atoms.

Front

What is the significance of significant figures in measurements?

Back

They indicate the precision of a measurement.

Front

What is the oxidation number of oxygen in most compounds?

Back

-2

Front

What is the difference between a molecular compound and an ionic compound?

Back

Molecular compounds consist of molecules formed by covalent bonds, while ionic compounds consist of ions held together by ionic bonds.