Show:
Heat vs. Temperature
Kinetic Molecular Theory
Stoich for heat
Q=mcΔT
Heat of Fusion/Vaporization/ Cond/Cry
100
A form of energy that flows spontaneously from a hotter body to a colder body is what?
What is heat.
100
A theory for an ideal gas that was attempted to explain the experimental observations about the behavior of gases discussed so far is known as what?
What is the kinetic molecular theory.
100
The relationship between the relative quantities of substances taking part in a reaction or forming a compound, typically a ratio of whole integers is what?
What is stoichiometry.
100

Q represents what in the equation?

Amount of heat
100
The amount of heat required to convert a solid at its melting point into a liquid without an increase in temperature is what?
What is heat of fusion.
200
A measure of the intensity of heat, hotness or coldness of an object is what?
What is temperature.
200
Gases are composed of a large number of particles that behave like what?
What is like hard, spherical objects in a state of constant, random motion.
200
In an exothermic reaction delta H is what?
What is negative.
200

ΔT represents what?

The change in temperature, final temperature minus initial temperature.

200
The amount of heat required to convert a unit mass of a liquid at its boiling point into vapor without an increase in temperature is what?
What is heat of vaporization.
300
In scienctific work, temperatures are often expressed on what temperature scale?
What is the Kelvin or (absolute) temperature scale.
300
The motion of particles described in the kinetic molecular theory is what?
What is they move in a straight line until they collide with another particle or the walls of the container.
300
The ∆H associated with an equation tells you what?
What is the amount of heat either absorbed or released when a chemical reaction occurs.
300

The specific heat (C) for water is what?

4.18 J/g°C

300
Heat of condensation is equal to what?
What is heat of vaporization.
400
The amout of heat a procces uses up can be described as what?
What is endothermic
400
There is no force of attraction between gas particles or between what?
What is the particles and the walls of the container.
400
The measure of the total energy of a thermodynamic system is what?
What is enthalpy.
400

Calculate the amount of heat needed to increase the temperature of 250g of water from 20°C to 40°C

37,620 J

400
The amount of heat that must be removed from one gram of a liquid at its freezing point to freeze it with no change in temperature is what?
What is heat of crystallization.
500
Temperature is not energy, but is what?
What is a measure of energy
500
Collisions between gas particles or collisions with the walls of the container is known as what?
What is perfectly elastic.
500
What is delta H for the reaction of sulfur dioxide with oxygen to form sulfur trioxide given the following heats of formation? delta fSO2 = - 296.8 kJ / mole delta H fSO3 = - 395.7 kJ / mole
What is -197.8 kJ
500
The initial temperature of 150g of ethanol was 22oC. What will be the final temperature of the ethanol if 3240 J was needed to raise the temperature of the ethanol is what?
What is 30.9 degrees celcius.
500
What is the heat in Joules required to melt 25 grams of ice? What is the heat in calories?
What is 8350 Joules or 2000 calories.