Calorimetry (math)
Heating/Cooling curves
Enthalpy
Laboratory techniques
100

In the equation Q=mcΔT, what is c?

specific heat
100
What is the process of going from a liquid to a gas?
Boiling


100
When bonds are broken, energy is _________ and when bonds are formed, energy is _________
required, released
100
Pen and paper ready. A student does a calorimetry experiment.  The mass of the calorimeter is 50g while the mass of the calorimeter plus water is 85g.  What is the mass of the water?
35g
200

In the equation Q=mcΔT, what is ΔT?

Change in temperature
200
Refer to X.  What is the name of the interval from C to B?
Freezing
200
What is enthalpy?
The change in heat energy of a reaction
200
Pen and paper ready. Calculate the heat the water gained from a metal if the mass of water is 10g, the c for water is 4.18, and the change in temperature was 2C
83.6J
300
Pen and paper ready.  100g of water gains 1000J of heat.  If the c for water is 4.18, what is the change in temperature?
2.39C
300
Refer to X.  What is happening to the potential energy and kinetic energy during the interval from D to E
potential energy increases

Kinetic energy remains the same

300
Bond breaking is endothermic/exothermic while bond formation is endothermic/exothermic
endothermic, exothermic
300
A student mixed vinegar and baking soda.  The temperature of the reaction decreased from 27C to 24C.  This reaction is endothermic or exothermic?
Endothermic
400
Pen and paper ready.  50g of iron loses 200J of heat.  If the c for iron is 0.45 J/gC, what is the final temperature of iron if it was initially at 40C
31.11C
400
Refer to X.  Moving left to right on the diagram,  energy is being (absorbed/released) making it (endothermic/exothermic)
Absorbed, endothermic
400
Refer to Y.  What is the activation energies of the forward and backward reactions?
60kJ, 80kJ
400
A student heated lauric acid until it melted.  The student noticed a period of time in which the temperature remained constant.  Explain this observation using the words potential energy and kinetic energy
during a phase change (melting) potential energy increases while kinetic energy remains the same
500
Pen and paper ready. 10g block of 60C metal is added to 50g of 25C water (c=4.18).  They reached a final temperature of 30C.  What is the specific heat of the metal? 
3.48 J/gC
500

Determine whether the following are exothermic or endothermic

solid to liquid

gas to liquid

solid to liquid --> endo

gas to liquid --> exo

500
Refer to Y.  What is the enthalpy? (negative or positive matters).  This reaction is endo or exo?
-20kJ, exo
500

Pen and paper ready. A 10g block of metal at 20C is dropped into 50g of boiling water (c=4.18, 100C). They reached an even temperature of 95C.

What is the specific heat of the metal?


1.39 J/gC

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