13886449
Descrição
Quiz por patricia alvarez, atualizado more than 1 year ago
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Criado por patricia alvarez
mais de 6 anos atrás
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Questão 1
Questão
Reactions that absorb hear are called [blank_start]endothermic[blank_end]
Responda
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endothermic
Questão 2
Questão
The energy used or produced during a chemical reaction is called the [blank_start]enthalpy[blank_end]
Responda
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enthalpy
Questão 3
Questão
[blank_start]Hess's[blank_end] law says that the (triangle H) for reactions are additive
Responda
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Hess's
Questão 4
Questão
The [blank_start]specific heat (c)[blank_end] of a substance tell how much energy is needed to raise the temperature of 1 gram of that substance by 1ºC
Responda
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specific heat (c)
Questão 5
Questão
1 calorie is equal to [blank_start]4.814[blank_end] joules
Responda
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4.814
Questão 6
Questão
An [blank_start]exothermic[blank_end] reaction is one that gives off heat
Responda
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exothermic
Questão 7
Questão
The amount of energy required to raise the temperature of 1 gram of pure water by 1ºC is exactly equal to one [blank_start]calorie[blank_end]
Responda
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calorie
Questão 8
Questão
[blank_start]Heat[blank_end] is the type of energy that alwats flows from warmer objects to cooler one
Responda
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Heat
Questão 9
Questão
[blank_start]Thermochemistry[blank_end] is the study of heat changes during chemical and physical changes
Responda
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Thermochemistry
Questão 10
Questão
If a reaction is reversed, the (triangle H) for the reaction must be [blank_start]changed to opposite sign[blank_end]
Responda
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changed to opposite sign
Questão 11
Responda
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A) Liquid: q=mc(triangle T)
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B) Boil: (Traingle H)fus
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C) Gas: q=mc(triangle T)
Questão 12
Questão
The type of reaction that absorbs heat from the surroundings
Responda
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Endothermic
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Exothermic
Questão 13
Questão
A chemical equation that includes the enthalphy change
Responda
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Thermochemical equation
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Phase change equation
Questão 14
Questão
When a reaction requires energy in order to be completed, this energy can be written on the ___ side of a chemical equation
Responda
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Right
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Left
Questão 15
Questão
The heat content of a substance
Responda
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Specific Heat
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Enthalpy
Questão 16
Questão
In order to melt a substance, energy is ___
Responda
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Absorbed
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Released
Questão 17
Questão
Describes the additive nature of chemical equations and heat changes
Responda
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Hess's Law
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Thermochemistry
Questão 18
Questão
The heat absorbed by 1 mole of a substance in boiling from a liquid to a gas at a constant temperature
Responda
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(Triangle H)fus
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(Triangle H)vap
Questão 19
Questão
The fact that equals masses of both water and copper, when supplied with identical energy amounts of energy amounts of energy heat up at different rates is due to their ___
Responda
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Specific Heat
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Chemical Potential Energy
Questão 20
Questão
How many kJ of energy can be released by a banana containing 150 calories?
Responda
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A) 6.3x10^5 kJ
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B) 0.028 kJ
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C) 36 kJ
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D) 630 kJ
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E) None of these
Questão 21
Questão
For the question below, use the following equation: I2(s) + 62.4 kJ --> I2(g)
Which of the following is true?
Responda
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A) The reaction is exothermic
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B) (Triangle H)= +62.4 kJ
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C) (Triangle H)= -62.4 kJ
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D) The reaction releases heat
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E) Not enough information to tell
Questão 22
Questão
For the question below, use the following equation: I2(s) + 62.4 kJ --> I2(g)
How much heat is involved in the production of 3.5 mole I2(g)
Responda
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A) 110 kJ
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B) 62 kJ
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C) 220 kJ
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D) 3.5 kJ
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E) None of these
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