Physical Science TEST: Chapter 9 In the space provided write the letter of the term or phrase the best complete
ach statement or best answers each question
B1. Which statement about danses is hermano (page 184)
Contain hydronium ions?

The reaction is exothermic.

A net release of energy from the reacting  

substances into the surroundings makes  

this an exothermic reaction.

The equation shows that 891 kJ of energy  

are released as a product.

The graph shows that the reactants have  

greater potential energy than the products.  

This means the difference in energy is  

released to the surroundings.