40 terms

Chemistry Final Exam Review CH.8

In a chemical reaction
the mass of the reactants equals the mass of the products
When a solid produced by a chemical reaction separates fro the solution it is called a
in writing a chemical equation that produces hydrogen gas, the correct representation of hydrogen gas is
A chemical equation is balanced when the
same number of each kind of atom appears in the reactants and in the products
In the word equation, sodium oxide +water produces sodium hydroxide, the formula for sodium hydroxide is represented by
Which word equation represents the reaction that produces water from hydrogen and oxygen?
hydrogen plus oxygen yields water
In an equation, the symbol for a substance in a water solution is followed by
a chemical forrmula wirrten over the arrow in a chemical equation signifies
a catalyst for the reaction
When the equation Fe3O4 + Al2O3 + Fe is correctly balanced, what is the coefficient of Fe?
Which coefficients correctly balance the formula equation NH4No2(s) yields N2(g) + H20(l)?
The complete balanced equation for the reaction between zing hydroxide and acetic acid is
Zn(OH)2 + 2CH3COOH yields Zn(CH3COO)2 +2H20
Which equation is not balanced?
2H2 + O2 yields H2O
The reaction represented by the equation 2Mg(s) + O2(g) is a
synthesis reaction
The reaction represented by the equation Mg(s) + 2HCl(aq) yields H2(g) + MgCl2(aq) is a
single-displacement reaction
The reaction represented by the equation 2HgO(s) yields 2Hg(l) + O2(g) is a
decomposition reaction
The reaction represented by the equation Pb(NO3)2(aq) + 2KI(aq) yields PbI2(s) +2KNO3(aq) is a
double-displacement reaction
The reaction represented by the equation 2KClO3(s) yields 2KCl(s) +3O2(g) is a
decomposition reaction
The reaction represented by the equation Cl2(g) + 2KBr(aq) yields 2KCl(aq) + Br2(l) is
single-displacement reaction
In one type of synthesis reaction, an element combines with oxygen to yield an
When heated, a metal carbonate decomposes into a metal oxide and
carbon oxide
Oxides of active metals, such as CaO, react to form a
When a binary compound decomposes, what is produced?
Two elements
When a binary compound decomposes, what is produced?
Two elements.
When a metal chlorate is heated, it decomposes to yield a metal chloride and
Some acids, such as carbonic acid, decompose to nonmetal oxides and
When heated, metallic chlorates decompose into
metallic chlorides and oxygen
In a double-displacement reaction, hydrogen chloride and sodium hydroxide react to produce sodium chloride. Another product is
When potassium reacts with water, one product formed is
hydrogen gas
Predict the product of the reaction represented by the following equation: MgO +CO2
Magnesium hydroxide decomposes to yield magnesium oxide and
When sodium chlorate, NaClO3, decomposes, the products are
sodium chloride and oxygen
If chlorine gas is produced by halogen replacement, the other halogen in the reaction must be
The formulas for the products of the reaction between sodium hydroxide and sulfuric acid are
Na2So4 and H2O
What is the balanced equation when aluminum reacts with copper(II) sulfate?
2Al + 3CuSo4 yields Al2(SO)4 + 3 Cu
The ability of an element to react is the element's
An element in the activity series can replace any element
below it on the list
Predict what happens when calcium metal is added to a solution of magnesium chloride
calcium chloride forms
Predict what happens when zinc is added to water
no reaction occurs
Predict what happens when nickel is added to a solution of potassium chloride
no reaction occurs
Magnesium Bromide(aq) +chlorine(g) yields
MgCl2(aq) and Br2(l).