Thou Shalt Not Forget Unit 1

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases heat to its surroundings, resulting in an increase in temperature.

Front

How does an exothermic reaction feel when touched?

Back

It feels hot.

Front

What is the formula for calculating the change in enthalpy (ΔH) of a reaction?

Back

ΔHrxn = ΔHproducts - ΔHreactants.

Front

In an exothermic reaction, what role does heat play?

Back

Heat is a product of the reaction.

Front

What happens to the bonds during an exothermic reaction?

Back

The bonds formed in the products are stronger than those in the reactants.

Front

What is the opposite of an exothermic reaction?

Back

An endothermic reaction, which absorbs heat from the surroundings.

Front

What is the significance of bond strength in exothermic reactions?

Back

Stronger bonds in products indicate that energy is released when the reaction occurs.

Front

Can breaking bonds be an exothermic process?

Back

No, breaking bonds requires energy input and is an endothermic process.

Front

What is ΔH in thermodynamics?

Back

ΔH represents the change in enthalpy, which is the total heat content of a system.

Front

What is an example of an exothermic reaction?

Back

Combustion of fuels, such as burning wood or gasoline.