Thermochemistry Review

In all chemical reactions...

• Chemical potential energy is conserved

• Heat energy is conserved

• Sound energy is conserved

• Total energy is conserved

What is heat a measure of?

• Average kinetic energy of the particles

• Specific heat of the particles

• Reactivity of the particles

• Average potential energy of the particles

The energy absorbed to break the bonds of the reactants is equal to the energy released to form the products.

• True

• False

The difference in energy between the reactants and the products, absorbed or released as heat, is called

• Specific heat (c)

• Enthalpy (ΔH)

• Chemical Potential Energy (J)

• Convection (X)

What is the only type of heat transfer that does not require a medium, and therefore can travel through outer space?

• Radiation

• Convection

• Conduction

When two objects are in direct contact with each other, heat is transferred through

• Convection

• Conduction

• Radiation

Convection is the type of heat transfer that takes place in a fluid, causing matter to move up and down in a __________

• radio wave

• wave

• circular current

• straight line

Cu + S + 300kJ ----> CuS

• Endothermic

• Exothermic

Cu + S + 300kJ ----> CuS

• Heat released

• Heat absorbed

Cu + S + 300kJ ----> CuS

• ΔH = positive

• ΔH = negative