What is the effect of temperature change on equilibrium a) an exothermic chemical reaction? b) an endothermic chemical reaction?

Explain why an exothermic chemical reaction both requires and releases energy. Your answer should include a description of what is occurring on the molecular level.

As a liquid vaporizes into a gas which of the following occurs?     the temperature increases and the energy content of the sample increases     the temperature decreases and the energy content of the sample increases     the temperature increases and the energy content of the sample decreases     the temperature decreases and the energy content of the sample decreases

The dissolving of ammonium nitrate is often used in an instant cold pack used to relieve swelling. If this process is an endothermic reaction, i.e. absorbs heat, then why does it feel cold to the touch instead of hot?

In order to break water into hydrogen and oxygen, water is heated to more than 500°C. Which kind of reaction is this and why? It is exothermic because heat needs to be released by the reactants to form the products. It is endothermic because heat needs to be released by the reactants to form the products It is exothermic because heat needs to be absorbed by the reactants to form the products. It is endothermic because heat needs to be absorbed by the reactants to form the products.