Chapter 8 Flashcards
What is the small whole number that belongs to an element in a chemical formula
Subscript
A solid produced by a chemical reaction in solution that separates from the solution
Precipitate
To balance a chemical equation, it may be necessary to adjust the
Coefficients
In an equation, the symbol for a substance in water solution is followed by
(Aq)
The equation AX->A+X is the general equation for a
Decomposition
The equation AX+BY->AY+BX is the general equation for
Double replacement reaction
The equation A+X->AX is the general equation for
Single replacement reaction
2Mg+O2->2MgO is a..
Synthesis reaction
The reactions Mg+2HCl->H2+MgCl2 is a
Single replacement reaction
Pb(NO3)2+2KI->PbI2+2KNO3
Double replacement reaction
The reaction CH4+2O2->2H2O+CO2 is a..
Combustion reaction
Oxides of active metals such as CaO react with water to produce
Metal hydroxides
Some acids, such as carbonic acid, decompose to nonmetal oxides and….
Water
When potassium reacts with water (HOH) one product formed is
Hydrogen gas
The reaction of calcium oxide (CaO) with water yields
Calcium hydroxide
Predict the product of this: MgO+CO2
MgCO3
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->Al2(SO4)3+3Cu
An element in the activity series can replace any element
Below it on the list
Predict what happens when lead is added to nitric acid
H2 gas is formed
Magnesium bromide + chlorine yield
Mg(Cl)2 and Br2
Always has carbon dioxide and water as products
Combustion
When is there a no reaction in double replacement
When both products are (aq)
How much is sulfur by itself
S8
How much is phosphorus by itself
P4
Equations that describe the chemicals put into the water and the product molecules
Molecular equations
Equations that describe the actual ions and molecules in the solutions as well as the molecules of solid, liquid, and gas not dissolved
Ionic equation
Ions that are both in reactants and products
Spectator ions
An ionic equation in which the spectator ions are dropped ; what is left over
Net ionic equation
One product
Synthesis
Two products
Decomposition
Alkanes
CnH2n+2
Alkenes
CnH2n
Alkynes
CnH2n-2
1
Meth
2
Eth
3
Prop
4
But
5
Pent
6
Hex
7
Hept
8
Oct
9
Non
10
Dec
Regular equations for combustion
Gasoline + oxygen-> carbon dioxide + water
Decane becomes what
C10H22
