CHAPTER 4 CHEMISTRY Flashcards
what would have a definite shape and a definite volume at STP
a solid
what would take the shape of and occupy the whole volume of its container
gas
as a substanced changes from a liquid to a gas, the average distance between molecules
increases
in which phase are the particles the most random
gas
what would be an endothermic phase change
liquid to gas
what wouldnt be considered a form of energy
temperature
what unit is used to express the amount of energy absorbed or released during a chemical reaction
joule
what is a form of energy
heat
the minimum number of fixed reference points required to establish the celcius temperature scale for a thermometer is
2
what are the fixed reference points on the celcius thermometer
0 and 100
the difference between the boiling point and the freezing point of pure water at standard pressure is
100K
what is the freezing point of water of the kelvin scale at standard pressure
273 K
when the temperature of an object changes ny 100 degrees celcius, the same temperature change in kelvins would be
100K
different masses of copper and iron have the same temperature. compared to the average kinetic energy of the copper atoms, the average kinetic energy of the iron atoms it
the same
how many joules of heat energy are released when 50 g of water are cooled from 70 degrees celcius to 60 degrees celcius
2.09 x 10^3
