chem

Front

A sample of iron receives 50J

Back

20

Front

In a system, the energy lost is:

Back

Equal to

Front

Endothermic

Back

Absorb energy

Front

If a substance goes from a liquid to a gas, the process is

Back

Endothermic, heat is transferred from the surrounding to the liquid

Front

Exothermic

Back

Release energy

Front

A temperature is placed in a calorimeter

Back

Exothermic

Front

During an endothermic reaction in a beaker

Back

Cold

Front

When a bond is broken, the process is

Back

Endothermic

Front

Heat always flows

Back

From hotter temperature to colder

Front

How much activation energy is needed for this reaction? Options: 300 KJ, 500 KJ, 400 KJ, 100 KJ

Back

400 KJ