Chemistry Unit 4

What is the name of a binary molecular compound made up of hydrogen and a main group element?

hydride

The name for a polyatomic anion that contains oxygen is a(n):

oxyanion

In this stoichiometry problem, determine the limiting reactant: Select all that apply. Aqueous lead(II) nitrate reacts with aqueous potassium iodide to produce aqueous potassium nitrate and lead(II) iodide as a precipitate. In this reaction 662 grams of lead(II) nitrate were combined with 332 grams of potassium iodide to produce 168 grams of potassium nitrate.

potassium iodide, KI

What is the name given to the study of the relationships between the quantities of reactants and products involved in chemical reactions?

reaction stoichiometry

What is the general name for an ionic compound composed of a cation from a base bonded to an anion produced by an acid?

salt

A chemical reaction in which one element displaces a similar element in a compound is a ___ reaction.

single-displacement

Which of the following is NOT a decomposition reaction?

the decomposition of a non-metal oxidizer

The maximum amount of product that could be produced in a chemical reaction under ideal conditions is the ___.

theoretical yield

Identify the combustion reaction(s):

2C8H18(l)+25O2(g)→16CO2(g)+18H2O(l)

Identify the decomposition reaction(s):

2NaClO3(s) → 2NaCl(s) +3O2(g)

In this stoichiometry problem, determine the percentage yield: Aqueous lead(II) nitrate reacts with aqueous potassium iodide to produce aqueous potassium nitrate and lead(II) iodide as a precipitate. In this reaction 662 grams of lead(II) nitrate were combined with 332 grams of potassium iodide to produce 168 grams of potassium nitrate.

83%

Identify the synthesis reaction(s):

H2O(l)+SO3(l)→H2SO4(aq)

The difference between the actual yield and the theoretical yield of chemical reaction expressed as a percentage is ___.

Percentage Yield

A chemical reaction in which two or more substances combine to form a new compound is a ___ reaction.

Synthesis

The measured quantity of a product that is actually obtained from a chemical reaction is called the ___.

actual yield

A ___ molecular compound consists of two atoms that share electrons to form a covalent bond.

binary

When one monatomic cation and one monatomic anion combine you obtain a:

binary ionic compound

A chemical reaction in which two aqueous compounds exchange ions to produce two new compounds is a ___ reaction.

double-displacement

What is the name given to the compound/element that is not completely used up in a chemical reaction?

excess reactant

What is the name of a binary molecular compound composed of hydrogen and a halogen?

hydrogen halide

In this stoichiometry problem, determine the theoretical yield: Excess aqueous lead(II) nitrate reacts with aqueous potassium iodide to produce aqueous potassium nitrate and lead(II) iodide as a precipitate. In this reaction 662 grams of lead(II) nitrate were combined with 332 grams of potassium iodide to produce 168 grams of potassium nitrate.

202g KNO3

Identify the single displacement reaction(s):

Mg(s)+2HCl (aq)→MgCl2+H2(g)

What is the name given to the compound/element used up in a chemical reaction and that causes the reaction to stop?

limiting reactant

A(n) ___ is a conversion factor that compares the number of moles of one substance to the number of moles of another.

mole ratio

___ is a numerical value assigned to each element to indicate the number of electrons that might be lost, gained, or shared by an atom of that element when it bonds with an ion or an atom of another element to form a compound.

oxidation number

What is the name of an acid that contains hydrogen, oxygen, and a third element, which is usually a nonmetal?

oxyacid