Chemistry

Aron Porter

13 September, 20:30

What is usually released as a product in a combustion reaction?

A.) elemental oxygen

B.) elemental carbon

C.) energy

D.) a carbon - based fuel

Which of the following best describes why MnSO4 - - - > MnO is NOT a synthesis reaction?

A.) Energy is not a product in this reaction

B.) The reaction has more than one product

C.) Oxygen is not a reactant in this reaction

D.) the equation is not balanced

A reaction that is essentially the opposite of synthesis reaction describes which of the following?

A.) displacement

B.) combustion

C.) decomposition

D.) oxidation-reduction

Double displacement reactions are often defined by which of the following?

A.) release of light

B.) use of oxygen as a reactant

C.) formation of a precipitate

D.) breakdown of only one compound