Unit 11 Enthalpy Test

Match the terms with their definitions

• enthalpy

• The study of heat changes that accompany chemical reactions and phase changes

• thermochemistry

• The heat content of a system at constant pressure

• calorimeter

• The specific part of the universe that contains the reaction or process you wish to study

• system

• An insulated device used to measure the amount of heat absorbed or released during a process

Tags

NGSS.HS-PS3-4

Match the terms with their definitions

• enthalpy of reaction

• The change in heat content in a chemical reaction

• surroundings

• Everything except the system being studied

• universe

• A system plus everything around it

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

A scientist is studying the solution in the flask. What is the system?

(a)  

• The solution in the flask
• The flask and the solution

• The entire laboratory

• The scientist

Tags

NGSS.HS-PS3-1

A scientist is studying the solution in the flask. Which are a part of the surroundings?

• The solution in the flask

• The scientist

• The flask

• The air in the room

• Everything

A scientist is studying the solution in the flask. Which are a part of the universe?

• The solution in the flask

• The scientist

• The flask

• The air in the room

• Everything

A(n) ​ (a)   is a balanced chemical equation that includes the physical states of all reactants and products and the energy change that accompanies the reaction.

• ionic equation

• net ionic equation

• empirical equation

• thermochemical equation

Tags

NGSS.HS-PS1-4

The enthalpy change for the complete burning of one mole of a substance is the (a)   .

• enthalpy of combustion
• enthalpy of formation

• enthalpy of fusion

• enthalpy of vaporization

The ​ (a)   is the heat required to vaporize one mole of a liquid.

• molar enthalpy of fusion

• molar enthalpy of combustion

• molar enthalpy of formation

• molar enthalpy of vaporization

The ​ (a)   is the heat required to melt one mole of a solid substance.

• molar enthalpy of vaporization

• molar enthalpy of sublimation

• molar enthalpy of combustion

• molar enthalpy of fusion

Converting two moles of a liquid to a solid requires an amount of energy that is twice the (a)   .

• molar enthalpy of fusion
• molar enthalpy of vaporization

• molar enthalpy of combustion

• molar enthalpy of sublimation