chemistry test

What is the most common oxidation number of combined sodium?

+1

What are the oxidation numbers in the compound NaCl?

+1, -1

In balanced chemical equations, the sum all of the oxidation numbers is-

0

What are the coefficients that would correctly balance this equation? Zn+K2CrO4 yields K+ZnCrO4

1, 1, 2, 1

What are the coefficients that would correctly balance this reaction? Ni+C4H8N2O2 yields Ni(C4H8N2O2)2

1, 2, 1

When the equation is correctly balanced using the smallest whole-number coefficients, what is the coefficient of Al? Al+CuSO4 yields Al2(SO4)3+Cu

2, 3, 1, 3

When the equation is correctly balanced using the smallest whole-number coefficients, what is the coefficient of CO? Fe2O3+CO yields Fe+CO2

2, 3, 4, 3 3

Which coefficients are required to correctly balance the equation, C2H2+O2 yields CO2+H2O

2, 5, 4, 2

What is the balanced equation for the combustion of magnesium?

2Mg+O2 yields 2MgO

Write the balanced equation. Sodium hydroxide and chlorine gas yields sodium chloride, sodium hypochlorite, and water

2NaOH+Cl2 yields NaCl+NaClO+H2O

What is the coefficient of O2 when the equation is balanced correctly using the smallest whole-number coefficients? Mg(ClO3)2(s) yields MgCl2(s)+O2(g)

3

Which equation represents a precipitation reaction?

AgNO3(aq)+NaOH(aq) yields AgOH(s)+NaNO3(aq)

Which product balances the chemical equation- 3AgNO3(aq)+FeCl3(aq) yields 3AgCl(s) + ?

Fe(NO3)3

Which equation represents a neutralization reaction?

H2SO4(aq)+2NaOH(aq) yields Na2SO4(aq)+2H2O(I)

Predict the products of the following reaction: Na2O+CO2

Na2CO3

Which of the following reactions involves a single compound producing two or more simpler substances?

decomposition

By predicting the outcome of the following reactants mixing together in an aqueous solution, what type of reaction will take place? Pb(NO3)2 (aq)+2KI(aq)

double replacement

Which of the following reactions involves the ions of two compounds exchanging places to form two new compounds?

double replacement

According to the law of conservation of matter, the total mass of all the reacting substance is-

equal to the mass of all products

After the correct formula for a reactant in an equation has been written, the-

formula can't be altered

Predict the outcome of the reaction where zinc metal is added to a solution of potassium chloride

no reaction

Which of the following reactions involves one element replacing an element in a compound that is from the dame activity series?

single replacement

A student observes what happens when two different aqueous solutions are mixed in a test tube. Which of the following observations would be most indicative of a precipitation reaction?

solid settles to the bottom

Which of the following reactions involves two or more substances combining to form a new compound?

synthesis