Semester Review #4: Unit 7 & 8 : Chemical Composition & Rxns

Front

What is the formula for magnesium nitride?

Back

Mg3N2

Front

Calculate the molar mass of magnesium nitride (Mg3N2).

Back

100.95 g/mol

Front

What are the products of the reaction: NaOH + Fe(NO3)3 → ?

Back

NaNO3 + Fe(OH)3

Front

What is the molar mass of NaCl?

Back

58.44 g/mol

Front

What does a mole of potassium chloride contain?

Back

6.02 x 10^23 formula units

Front

Identify the type of reaction: 2 AgNO3 + Cu → Cu(NO3)2 + 2 Ag.

Back

Single displacement

Front

What is the definition of a mole in chemistry?

Back

A mole is 6.02 x 10^23 of any entity (atoms, molecules, etc.).

Front

What is the difference between ionic and covalent compounds?

Back

Ionic compounds are formed by the transfer of electrons, while covalent compounds are formed by the sharing of electrons.

Front

What is the significance of the coefficients in a balanced chemical equation?

Back

Coefficients indicate the number of moles of each reactant and product involved in the reaction.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.