Chem ch8
Which of the following is a formula equation for the formation of carbon dioxide from carbon and oxygen?
C + O2 = CO2
In writing an equation that produces hydrogen gas, The correct representation of hydrogen gas is
H2
For the formula equation 2Mg+O2 = 2MgO, the word equation would begin
Magnesium plus oxygen
Which coefficients correctly balance the formula equation CaO + H2O = Ca(OH)2
1,1,1
Which coefficients correctly balance the formula equation NH4NO2(s) = N2(g) + H2O(I)
1,1,2
What is the balanced equation when aluminum reacts with copper (II) sulfate
2Al + 3CuSO4 = Al2(SO4)3 + 3Cu
Which reaction does not occur
2HF + Cl2 = F2 + 2HCl
When the equation Fe3O4 + Al = Al2O3 + Fe, what is coefficient of Fe?
9
The ability of an element to react is the element's
Activity
According to the law of conservation of mass, The total mass of reacting substances is
Always equal to the total mass of the products
An element in the activity series can replace any element
Below it on the list
What is the small whole number that appears in front of a formula in a chemical equation
Coefficient
In what kind of reaction does a single compound produce two or more simpler substances?
Decomposition reaction
The equation Ax = A+X is the general equation for a
Decomposition reaction
The reaction 2HgO(s) = 2Hg(I) + O2(g) is a(n)
Decomposition reaction
The reaction 2KCIO3(s) = 2KCI(s)+ 302(g) is a(n)
Decomposition reaction
The equation AX + BY = AY + Bx is the general equation for
Double replacement reaction
The reaction Pb(NO3)2(aq) + 2Kl(aq) = Pbl2(s) 2KNO3 (aq) is a
Double replacement reaction
In what kind of reaction do the ions of two compounds exchange places in aqueous solution to form two new compounds
Double-displacement reaction
If chlorine gas is produced by halogen replacement, the other halogen in the reaction must be
Fluorine
The replacement of bromine by chlorine in a salt is an example of a single-replacement by
Halogens
Which word equation represents the reaction that produces water from hydrogen and oxygen
Hydrogen plus oxygen yields water
Magnesium bromide + chlorine yield
Mg(Cl)2 and Br2
How would oxygen be represented in the formula equation for the reaction of methane and oxygen to yield carbon dioxide and water
O2
Chemical equation is balanced when the
Same number of each kind of atom appears in the reactants and products
The equation A+ BX = AX + B is the general equation for a
Single replacement reaction
The reaction Cl2(g) + 2KBr(aq) = 2KCl(aq) Br2I is a(n)
Single replacement reaction
The reaction Mg(s)+ 2HCl(aq) = H2(g) + MgCl2(aq) is a
Single replacement reaction
In what kind of reaction does one element replace a similar element in a compound?
Single-replacement reaction
The equation A +X = AX is the general equation for a(n)
Synthesis reaction
The reaction 2Mg(s) + O2(g) = 2MgO(s) is a
Synthesis reaction
When binary compound decomposes what is produced
Two elements
What can be predicted by using the activity series
Whether a certain chemical reaction will occur
Which equation is NOT balanced?
2H2 + O2 = H2O