Thermochemistry Notes

Bellwork 4/30 - Exo and Endo

Please go to Canvas and complete today's bellwork and then turn to page 127 and title it Thermochemistry Notes.

​Page 127

Multiple Choice

Which of these has the most potential energy.

• A

• B

• C

• D

Multiple Choice

ΔH value in an endothermic reaction is a positive number.

• True
• False

Multiple Choice

Which statement is true regarding endothermic reactions?

• a) Temperature change is positive and enthalpy change is positive
• b) Temperature change is positive and enthalpy change is negative
• c) Temperature change is negative and enthalpy change is positive
• d) Temperature change is negative and enthalpy change is negative

Multiple Choice

How do you calculate Enthalpy of a reaction?

• ΔH = ΔH_products - ΔH_reactants

• ΔT = q / mC

• ΔG = ΔH -TΔS

• E = mc²