Thermochemistry Review

Quantity of heat needed to change the temperature of 1 g of a substance by 1 °C

• Heat capacity

• Calorie

• Joule

• Enthalpy

• Specific heat

Device used to measure the heat absorbed or released during a chemical or physical process

• Calorimeter

• Calorie

• Joule

• Enthalpy

• Specific heat

The enthalpy change for a chemical reaction

• Heat of reaction

• Heat of formation

• Hess's Law of heat summation

• Heat of fusion

• Heat of solution

Tags

NGSS.HS-PS1-4

The enthalpy change caused by dissolving a substance

• Heat of reaction

• Heat of formation

• Hess's Law of heat summation

• Heat of fusion

• Heat of solution

the study of energy changes that occur during chemical reactions and changes in state

Tags

NGSS.HS-PS1-4

H₂ + ½ O₂ --> H₂O + 285kJ is an example of a(n)

• Electrical equation

• Heat equation

• Thermochemical equation

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

What type of reaction is this?

• Exothermic

• Endothermic

• Kinetic

• Potential

Tags

NGSS.HS-PS1-4

ΔH means:

• temperature

• calorimetry

• enthalpy

• syntropy

If the enthalpy ter (ΔH) is negative the reaction is ____.

• Endothermic

• Exothermic

• Neutral

Tags

NGSS.HS-PS1-4

What is true about thermodynamically favorable reactions?

• They need outside energy to be put in

• They always increase entropy

• They always have a negative ΔH

• ΔG is positive