Chemistry chapter 11
When the equation Fe2O3 + H2 > Fe + H2O is balanced using whole number coefficients, what is the coefficient of H2?
3
In a ______________ each side of the equation has the same number of atoms of each element
Balanced equation
The number that appears in front of a formula in a balanced equation is the _____________
Coefficient
A _____________ is a chemical change in which two or more substances react to form a single new substance
Combination reaction
A _______________ is a chemical change in which two or more substances react to form a single new substance
Combination reaction
A _______________ is a chemical change in which an element or compound reacts with oxygen
Combustion reaction
A ________________ is an equation that shows dissolved ionic compounds as dissociated free ions
Complete ionic equation
A _______________ is a chemical change in which a single compound breaks down into two or more simpler products
Decomposition reaction
Skeleton equation
Does not indicate amount of reactants and products
A ________________ is a chemical change involving an exchange of positive ions between two compounds
Double replacement
A ____________________ reaction is a chemical change that involves an exchange of positive ions between two compounds
Double replacement
Which are the expected products of the decomposition reaction of potassium oxide, K2O?
K(s() and O2(g)
To write a skeleton equation, write the chemical formulas for the reactance to the __________ of the yield sign (arrow) and the formula for the products to the ___________
Left,right
Activity series
List of elements in decreasing reactivity
The ________________ is an equation for a reaction in solution that shows only those particles that are directly involved in the chemical change
Net ionic equation
Spectator ion
Not directly involved in a chemical reaction
Coefficients
Numbers in front of formulas
Decomposition reaction
One compound breaks down into two or more products
Single replacement reaction
One element replaces another in a compound
By using the general rules for solubility of ionic compounds, you can predict the formation of a
Precipitate
Combustion reaction
Reacts with oxygen
Chemical equation
Representation of a chemical reaction
A _________________ is a chemical change in which one element replaces a second element in a compound
Single replacement reaction
A ________________ is a chemical equation that does not indicate the relative amounts of the reactants and products
Skeleton equation
To write a balanced chemical equation, first right the ____________
Skeleton equation
And Ion that appears on both sides of an equation and is not directly involved in the reaction is called a
Spectator ion
And ion that appears on both sides of an equation and is not directly involved in the reaction, is called a ______________
Spectator ion
catalyst
Speeds up a reaction
Identify the spectator ion in this reaction. [ BaOH)2(aq) + H2SO4(aq) > BaSO4(s) + H2O(1) ]
There is no spectator ion
Combination reaction
Two substances form one new compound
