Chemical Formulas and Compounds

Front

What is a chemical formula?

Back

A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound, using symbols for the elements and numerical subscripts to indicate the number of atoms.

Front

What does the subscript in a chemical formula indicate?

Back

The subscript in a chemical formula indicates the number of atoms of the element present in one molecule of the compound.

Front

What is the formula for iron (II) sulfide?

Back

FeS

Front

What is the formula for calcium chloride?

Back

CaCl₂

Front

What is the formula for potassium sulfide?

Back

K₂S

Front

What is the correct formula for sodium oxide?

Back

Na₂O

Front

What is the formula for the compound formed between strontium and bromine?

Back

SrBr₂

Front

What is the significance of oxidation states in chemical formulas?

Back

Oxidation states indicate the degree of oxidation of an atom in a compound, which helps in determining the correct formula for ionic compounds.

Front

What is the formula for copper (I) oxide?

Back

Cu₂O

Front

What is the formula for sodium fluoride?

Back

NaF