Vocab
Heating & Cooling Curves
Phase Diagrams
Specific Heat
Misc.
100
The change of state from a solid to a liquid
Melting
100
The correct label for A, C, and E
A - Solid
C - Liquid
E - Gas
100
What is the point at 5.2 atm and 216.6 K called?
Triple point
100
What is specific heat?
Quantity of heat needed to raise the temperature of a substance
100
Give the difference between endothermic and exothermic
Endothermic - cold, absorbs energy
Exothermic - hot, releases energy
200
Transfer of heat through the sun or fire
Radiation
200
The Boiling point for the Heating & Cooling Curve 
1465
200
At 5.2 atm and 216.6 K, what states of matter are present for CO₂?
Solid, liquid, and gas
200
Look at the table provided above. Which substance would be the hardest to heat up, and why?
Water, because it has the highest specific heat
200
What would likely happen if you were to touch the flask in which an endothermic reaction was occurring?
It would feel cold
300
Device used to measure the heat absorbed or released during a chemical or physical process
Calorimeter
300
The approximate melting point for the Heating & Cooling Curve below
801
300
At a constant temperature of ~300 K, if pressure decreases from 70 atm to 1 atm, what phase change will CO₂ undergo?
Liquid → Gas
300
If you wanted to slowly heat a cup of liquid without it changing temperature quickly, which substance from the table would you choose, and why?
Water, because it has a high specific heat and resists temperature change
300
A piece of metal is heated, then submerged in cool water. Which statement below describes what happens?
a. The temperature of the metal will increase.
b. The temperature of the water will increase.
c. The temperature of the water will decrease.
d. The temperature of the water will increase and the temperature of the metal will decrease.
D.
400
Give the difference between conduction and convection
Conduction - Transfer of heat through direct contact
Convection - Transfer of heat through the movement of heated particles (no touching)
400
The correct label for B and D for the Heating & Cooling Curve below
B - Melting
D - Boiling/Evaporation
400
As the pressure increases from 1 atm to 70 atm at a constant temperature of 197.5 K, what happens to the particles of CO₂?
Particles slow down and get closer together
400
How much heat is required to raise the temperature of 10 g of aluminum by 10℃? (Specific heat of aluminum = 0.21 J/g·℃)
21 J
400
During a phase change, the temperature of a substance ____.
a. Increases
b. remains constant
c. Decreases
d. may increase or decrease
B.
500
Give the definitions of Heat and Temperature
Heat - Amount of thermal energy possessed by a substance
Temperature - Measure of average kinetic energy of the particles in a sample
500
Label H, J, K, and I
H & I = Endothermic
J & K = Exothermic
500
If you want CO₂ to sublimate rather than melt, which conditions must you use?
Pressure below 5.2 atm and temperature below 216.6 K
500
Look at the table provided above. If you apply the same amount of heat to 100 g of iron and 100 g of water, which one will experience a larger temperature change?
Iron, because it has a lower specific heat
500
Boiling is a ________________ process since energy must be _______________
Endothermic, added