# What is an exothermic reaction GCSE?

## What is an exothermic reaction GCSE?

Exothermic reactions transfer energy to the surroundings and the temperature of the surroundings increases. Endothermic reactions take in energy and the temperature of the surroundings decreases.

## How does a diagram show an exothermic reaction?

An energy level diagram shows whether a reaction is exothermic or endothermic . It shows the energy in the reactants and products , and the difference in energy between them.

What is the reaction profile for an exothermic reaction?

In exothermic reactions, chemical potential energy is changed into heat energy, and released, causing the temperature to rise. As energy is released in this reaction, the enthalpy of the products (Hp) must be lower than the enthalpy of the reactants (Hr).

### Why is exothermic reaction hot?

When a chemical reaction combines two or more things and makes a chemical bond, energy is released, so it is an exothermic reaction. These reactions usually feel hot because heat is given off. If a reaction breaks one or more bonds, energy is needed, or consumed, so it is an endothermic reaction.

### Is melting is exothermic reaction?

Melting is an exothermic process.

How are exothermic reactions related to the energy level?

Exothermic reactions transfer energy to the surroundings and the temperature of the surroundings increases. Endothermic reactions take in energy and the temperature of the surroundings decreases. Reaction profiles. An energy level diagram shows whether a reaction is exothermic or endothermic.

## How does exothermic reaction affect the curve plotted?

The effect the reaction being exothermic would have on the results as well as the curve plotted, would be that the results would have much bigger values and the curve plotted would be much steeper due to the rate of reaction increasing.

## Why is the reaction between MG and HCl exothermic?

You get these gems as you gain rep from other members for making good contributions and giving helpful advice. 1) One problem with this experiment is that the reaction between Mg and HCl is exothermic. a) What effect will this have on the results and the curves that you have plotted? Rep: ?

Which is the best description of an endothermic reaction?

Endothermic reactions take in energy and the temperature of the surroundings decreases. Reaction profiles. An energy level diagram shows whether a reaction is exothermic or endothermic. It shows the energy in the reactants and products, and the difference in energy between them.