chemistry honors 3rd 9 weeks exam review

Réussis tes devoirs et examens dès maintenant avec Quizwiz!

which coefficients correctly balance the formula NH4NO2->N2+2H2O?

1 1 2

which coefficients correctly balance the formula equation NH4NO2->N2+H2O?

1 1 2

what is the balanced equation when aluminum reacts with copper(ll) sulfate?

2Al+3CuSO4->Al2(SO4)3+3Cu

which equation is not balanced?

2H2+o2->H2o

when the equation FE3O4 +Al->Al2O3 +Fe is correctly balanced what is the coefficient of Fe?

9

Which of the following is a formula equation for the formation of carbon dioxide from carbon and oxygen

C+O2->CO2

in the word equation sodium oxide+ water -> sodium hydroxide the formula for sodium hydroxide is represented by

NaOH

a chemical formula written over the arrow in a chemical equation signifies

a catalyst for the reaction

what is the measured amount of a product obtained from a chemical reaction?

actual yield

in the equation 2Al+3Fe(NO3)2->3Fe+2Al(NO3)3 iron has been replaced by

aluminum

according to the law of the conservation of mass the total mass of the reacting substances is

always equal to the total mass of the products

in the equation, the symbol in a substance in water solution is followed by...

aq

Predict what happens when calcium metal is added to a solution of magnesium chloride

calcium chloride

magnesium bromide+chlorine yields

calcium chloride

the reaction of calcium oxide, CaO, with water yields

calcium hydroxide

which observation does not indicate that a chemical reaction has occurred?

change in total mass of substances

the equation AX->A+X is the general equation for

decomposition reaction

in what kind of reaction does one element replace a similar element in a compound

displacement reaction

the equation AX+BY->AY+BX is the general equation for

double displacement

the reaction represented by the equation Pb(NO3)2+2KI->PbI2+2KNO3 is

double displacement reaction

In writing a chemical equation that produces hydrogen gas the correct representation of hydrogen gas is

h2

which reactant controls the amount of the product formed in a chemical reaction

limiting reaction

a balanced chemical equation allows one to determine the

mole ratio of any two substances in the reaction

what is the ratio of the actual yield to the theoretical yield multiplied by 100%

percentage yield

when a solid produced by a chemical reaction separates to form the solution

precipitate

the coefficients in a chemical equation represent the

relative number of moles of reactants and products

a chemical equation is balanced when the

same number of each kind of atom

a chemical equation is balanced when...

same number of each kind of atom appears in the reactants and in the product

the reaction represented by the equation Mg+2HCl-> H2 + MgCl2 is

single displacement reaction

In what kind of reaction do 2 or more substances combine to form a new compound?

synthesis reaction

the reaction represented by the equation 2Mg+O2 ->2MgO

synthesis reaction

if the percent yield is equal to 100% then

the actual yield is equal to the theoretical yield

what is the maximum possible amount of product obtained in chemical reaction

theoretical yield

in a double displacement reaction hydrogen chloride and sodium hydroxide react to produce sodium chloride another product is

water


Ensembles d'études connexes

Des questions! Complétez chaque dialogue avec un mot interrogatif logique.

View Set

Online Learning Center Chapter 18

View Set

Tennessee laws and rules pertinent to insurance

View Set

Next Generation Sequencing Midterm

View Set

World History Unit:11 Lesson:3 "the Mongol Empire and Ming China"

View Set