enthalpy change
What is the definition of enthalpy change?
The transfer of heat between a system and its surroundings at constant pressure
Which of the following is an example of an exothermic enthalpy change?
Burning of wood
What is the standard unit for measuring enthalpy change?
Joules (J)
Which of the following is true about endothermic enthalpy change?
It increases the temperature of the system
Enthalpy change is a measure of:
Thermal energy
Which of the following factors affect the magnitude of enthalpy change during a chemical reaction?
Temperature and pressure
In an exothermic reaction, the enthalpy change is:
Negative
Which of the following statements is true regarding enthalpy change?
It is a state function
What is the enthalpy change for a reaction in which energy is absorbed from the surroundings?
Positive
Which of the following represents the correct formula for calculating enthalpy change?
ΔH = q + ΔU