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26 questions
As an acid, what does HCl give up pretty easily?
an electron
a hydrogen ion
a chlorine ion
a neutron
Sodium hydroxide, an extremely caustic substance, is more commonly known as ___
battery acid
stomach acid
baking soda
lye
What kind of a reaction happens when an acid and a base are mixed?
a decomposition reaction
a synthesis reaction
a neutralization reaction
a combustion reaction
Mixing concentrated acids and bases ___
absorbs heat
releases heat
releases a gas
absorbs moisture
If they can, molecules will move toward a state of ___
lower energy
higher energy
decay
unrest
The internal energy of the system plus the product of pressure and volume is called ___
Gibbs free energy
total energy
entropy
enthalpy
At constant pressure, enthalpy works out to be exactly the same as ___
the temperature of the surroundings
the temperature of the system
the heat that's absorbed or released by a reaction
the volume of the system
While hand-warmers use exothermic reactions, chemical ice packs for treating injuries are based on ___
endothermic reactions
isothermic reactions
isobaric reactions
hypothermic reactions
How far the fuel in an airplane's tank will allow it to fly is based on the ability to calculate ___
elevation
change in enthalpy
gravitational potential energy
atmospheric pressure
One of the ways we can calculate the change in enthalpy of a system is with ___
Markovnikov's Rule
The Haber Process
Hess's Law
Bernoulli's equation
Hess's Law states that the total enthalpy change for a chemical reaction only depends on ___
its initial state
its final state
its initial and final states
the pathway it takes
The science of measuring the change in heat associated with a chemical reaction is called ___
spectroscopy
calorimetry
meteorology
thermometry
What scientific apparatus is basically an insulated container that contains a thermometer?
a spectrometer
a photometer
a calorimeter
a thermal regulator
The chemicals in the calorimeter make up the thermodynamic system and everything else is ___
an isolated system
boundary conditions
a closed system
the surroundings
In a calorimeter what instrument is usually used to track the temperature change?
a calibrated balance
a thermometer
a graduated cylinder
a digital hot plate
Hank measured room temperature to be about ___
11°C
16°C
21°C
26°C
Which toxic element was traditionally used in thermometers?
mercury
iodine
fluorine
calcium
Which symbol is normally used to represent the heat change in a calorimeter?
a lowercase "h"
a lowercase "q"
an uppercase "t"
the Greek symbol "delta"
The heat required to raise the temperature of one mass unit of a substance by 1 °C is called ___
the gravimetric heat density
specific density
specific heat capacity
the molar enthalpy
Unlike with metals, to raise the temperature of water it requires a lot of ___
specific heat capacity
hydrogen bonds
gravitational potential energy
thermal energy
The extremely high specific heat capacity of water is due to the breaking and formation of ___
mercury thermometers
hydrogen bonds
covalent bonds
ionic bonds
The heat change of the reaction in the calorimeter was found using the equation ___
ΔH = smΔT
ΔT = smΔH
q = sTΔm
E = ½mv²
Thermodynamics is the study of ___
acids and bases
neutralization reactions
heat, energy, and work
the spatial arrangements of atoms in molecules
What is the specific heat capacity of water?
1.184 Joules per gram degrees Celsius
4.184 Joules per gram degrees Celsius
8.184 grams per Joule degrees Celsius
4.814 grams per Joule degrees Celsius
The experimental calorimetry results were compared to the results using Hess's Law and ___
the standard entropies of creation
the common energies of formation
the common enthalpies of creation
the standard enthalpies of formation
The greatest source of error in the calorimeter calculation was probably the use of ___
a graduated cylinder instead of a burette
a mercury thermometer instead of a digital one
the specific heat capacity of pure water instead of the salt water
impure chemicals
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