Question

1.Compare Endothermic reactions to exothermic reactions (Define each and list 2 characteristics for each. Fill in the table below.-ENDOTHERMIC                              -EXOTHERMIC•Positive H Value                              •Negative H •ValueAbsorbs heat                              •Releases Heat•Products have higher energy                              •Products have a lower energy

Answer 1

When the enthalpy is positive (H > 0), the reaction is endothermic, that is, it absorbs energy.

When the enthalpy is negative (H< 0), the reaction is exothermic, that is, it releases energy.

Therefore, the correct matches are

Endothermic:

• Positive H Value.

,

• Absorbs Heat.

,

• Products have higher energy.

Exothermic:

• Negative H Value.

,

• Releases Heat.

,

• Products have lower energy.