Ionic Compounds and Chemical Formulas

The video tutorial explains how to write chemical and ionic formulas from compound names. It covers the conversion of names like dihydrogen monoxide to H2O and discusses the importance of balancing ionic formulas by considering charges. The tutorial also touches on atomic stability, using the analogy of a tennis ball to describe electron shells and the desire of atoms to achieve noble gas configuration.

What is the chemical formula for dihydrogen monoxide?

• H2O2

• H2O

• HO2

• H2

How many sulfur atoms are in dinitrogen trisulfide?

• 4

• 1

• 2

• 3

What is the formula for silicon dihydride?

• SiH

• Si2H2

• SiH2

• Si2H

In ionic compounds, which side is the cation written on?

• Bottom

• Left

• Right

• Top

What is the charge of lithium in lithium oxide?

• +2

• -1

• +1

• -2

What is the formula for iron(III) chloride?

• Fe3Cl

• FeCl3

• FeCl2

• FeCl

How many chromate ions are needed to balance manganese(IV) chromate?

• 1

• 4

• 3

• 2

What is the charge of zinc in zinc thiocyanate?

• -1

• -2

• +2

• +1

Why do atoms form compounds?

• To gain or lose electrons

• To become unstable

• To become noble gases

• To increase mass

What is the formula for zinc thiocyanate?

• Zn2SCN

• Zn(SCN)2

• ZnSCN

• Zn2(SCN)2