Thermochemistry Test Review

Determine the ΔT for a reaction in which the initial temperature is 19.3℃ and the final temperature is 40.9℃.

• ΔT = 19.3 - 40.9 =

  -21.6℃

• ΔT = 40.9 - 19.3 =

  21.6℃

• ΔT = 19.3 - 40.9 =

  21.6℃

Determine the ΔT for a reaction in which the initial temperature is 25.6℃ and the final temperature is 10.9℃.

• ΔT = 10.9 - 25.6 =

  -14.7℃

• ΔT = 25.6 - 10.9 =

  14.7℃

• ΔT = 10.9 - 25.6 =

  -25.6℃

What is the symbol for thermal energy?

• Q

• C

• m

• ΔT

The transfer of heat through the movement of a fluid, like air as it rises, is called ________.

• radiation

• convection

• conduction

• temperature

Radiation is the transfer of heat through ________.

• direct contact

• the movement of a fluid

• electromagnetic radiation

• kinetic energy

A reaction in which energy is GAINED by the system from the surroundings is a(n) _____ reaction.  

• combustion

• exothermic

• endothermic

• synthesis

The lab procedure used to determine the amount of energy transferred from one object to another is _______.

• electrochemistry

• equilibrium

• thermochemistry

• calorimetry

What is the molar mass of C₆H₁₄?

• 13.02 g/mol

• 174.2 g/mol

• 44.01 g/mol

• 86.17 g/mol

The measurement of the average kinetic energy of the molecules in the system is ___.

• thermal equilibrium

• temperature

• heat

• thermal energy

The branch of chemistry concerned with the quantities of heat evolved or absorbed during chemical reactions is 

• thermochemistry

• electrochemistry

• calorimetry

• equilibrium