Chapters 4-6 Test Questions

question

HClO4

Strong or weak acid?

answer

Strong Acid
question

HCl

Strong or weak acid?

answer

Strong Acid
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HBr

strong or weak acid

answer

strong
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HI

strong or weak acid

answer

strong acid
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HNO3

strong or weak acid

answer

strong acid
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HCN

strong or weak acid

answer

weak acid
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H2SO3

strong or weak acid

answer

weak acid
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HNO2

strong or weak acid

answer

weak acid
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HCHO2

strong or weak acid

answer

weak acid
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H2SO4

(Name)

answer

Sulfuric Acid
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H2SO3

(Name)

answer

sulfurous acid
question

HNO3

(name)

answer

Nitric acid
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HNO2

(name)

answer

nitrous acid
question

HClO4

(name)

answer

perchloric acid
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HClO3

(name)

answer

chloric acid
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HClO2

(name)

answer

chlorous acid
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HClO

(name)

answer

hypochlorous acid
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anion formed from acids with -ous suffix
answer

-ite
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anion formed from acids with -ic suffix
answer

-ate
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Four conditions which dictate whether a metathesis (double replacement) reaction will occur.
answer

1. Precipitate forms from soluble reactants

2. Acid-base neutralization occurs (not when salts used)

3. Gas is formed

4. Weak electrolte forms from soluble strong electrolytes

question

Soluble Compounds
answer

1. All compounds of alkali metals

2. All salts with NH4+, NO3, ClO4, ClO3 and C2H3O2

3. All salts containing Cl, Br or I except when combined with Ag+, Pb2+ and Hg22+

4. All SO42-, except with Pb2+, Ca2+, Sr2+, Hg22+ and Ba2+ 

question

Insoluble Compounds
answer

1. Metal hydroxides (OH) and metal oxides (O2-) except Group IA and Ca2+, Ba2+, Sr2+, Ra2+

 

2. All salts with PO43- CO32-, SO32-, and S2-, except those of Group IA and NH4+

question

Compounds of the alkali metals…soluble/insoluble?
answer

soluble
question

Salts containing NH4+…soluble/insoluble?
answer

Soluble
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Salts containing NO3…soluble/insoluble?
answer

soluble
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Salts containing ClO4…soluble/insoluble?
answer

soluble
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Salts containing ClO3…soluble/insoluble?
answer

soluble
question

Salts containing C2H3O2…soluble/insoluble?
answer

soluble
question

Chlorides…soluble/insoluble?
answer

soluble except with Ag+, Pb2+ and Hg22+
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Bromides…soluble/insoluble?
answer

Soluble except with Ag+, Pb2+ and Hg22+
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Iodides…soluble/insoluble?
answer

Soluble, except with Ag+, Pb2+ and Hg22+
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Oxides…soluble/insoluble?
answer

Insoluble, except with Group IA and with Ca2+, Sr2+, Ra2+ and Ba2+
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Hydroxides…soluble/insoluble?
answer

Insoluble, except with Group IA and with Ca2+, Sr2+, Ra2+ and Ba2+
question

Sulfates…soluble/insoluble?
answer

Soluble, except with Pb2+, Hg22+,Ca2+, Sr2+ and Ba2+
question

Gas is formed by acid reactions with which compounds…
answer

Sulfides                      S

Sulfites                      SO3  

cyanides                     CN

carbonates                  CO3

bicarbonates               HCO3

bisulfites                    HSO3

question

Gas is formed by base reactions with…
answer

Ammonium salts  NH4
question

Four circumstances that qualify a reaction as redox…
answer

1. Loss or gain of electrons

2. Loss or gain of oxygen

3. Loss or gain of hydrogen

4. Change in oxidation number

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decomposition reaction
answer

When one reactant breaks down to give 2 or more products.
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Combination/synthesis
answer

When 2 or more reactants combine to give 1 product.
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Elements that exist as diatomic molecules
answer

H2   N2  O2

 

   F2   Cl2   Br2  I2    

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Oxidation number of free element
answer

Zero
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Oxidation number of F in compounds
answer

-1
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Oxidation number of Hydrogen in compounds
answer

+1
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Oxidation number of Oxygen in compounds
answer

-2
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Oxidation number of any simple, monoatomic ion
answer

Equal to the charge on the ion
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Oxidation numbers of molecules or polyatomic ions
answer

Sum of all oxidation numbers must be equal to the charge on the particle
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Oxidation number of group IA (alkali metals)
answer

+1
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Oxidation number of group II A (Alkaline Earth Metals)
answer

+2
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Examples of oxidizing agents
answer

Oxygen

Oxyacids

Nonmetals

Oxygen-containing compounds (hydrogen peroxide and bleach)

question

Examples of reducing agents
answer

hydrogen

metals

question

[image]
answer

Exothermic
question

[image]
answer

Endothermic
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Energy transferred between objects caused by differences in their temperatures until they reach thermal equilibrium.
answer

Heat
question

Ability to do work or transfer heat
answer

Energy
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Kinetic energy
answer

energy of motion
question

potential energy
answer

energy of position

energy stored in matter

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formula for finding kinetic energy
answer

KE = 1/2 mv2
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Two ways potential energy increases
answer

1. Objects that attract move apart

2. Objects that repel move closer together

question

Things with high potential energy are _________(stable/unstable).
answer

Unstable
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S.I. Unit of Energy
answer

Joules
question

formula for finding joules
answer

J = kg * m2

   s2

question

British unit of energy
answer

calorie
question

1 calorie =
answer

4.184 J
question

1 kcal =
answer

4.184 kJ
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Δ E for reactions that don’t involve gases.
answer

; E;= q
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Substances with ____(high/low) specific heats resist temperature changes.
answer

high
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Heat capacity
answer

The ability of an object with constant mass to absorb heat.
question

Heat capacity is an ___________(extensive, intensive) property.
answer

Extensive Property
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Specific heat;is an ___________(extensive, intensive) property.
answer

intensive
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Specific heat
answer

Ability of a substance to store heat.
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Heat evolved/transferred
answer

q = ms;t

;

q = C;t

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Formula for Heat capacity
answer

C = ms
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Formula used in calorimetry problems.
answer

q = ms;t
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Hess’s Law
answer

The overall enthalpy change for a reaction is equal to the sum of the enthalpy changes for individual steps in the reaction.
question

Formula for finding ΔH for reactions
answer

Δ H = sum(mol x ΔHf products)-sum(mol x ΔHf reactants)

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