Thermochemistry

Question 1

System. Vs surroundings

Answer 1

The thing you are studying = system.surroundings are not apart of the system

Question 2

Open, closed and isolated

Answer 2

Open, matter and energy can escape, closed only energy can leave. Isolated neither matter nor t energy can leave

Question 3

Endothermic reactions and bonds

Answer 3

More energy required to breakbonds than the energy released when forming new bonds.

Question 4

Enthalpy

Answer 4

Change in enthalpy is equal to the heat gained or lost by a system

Question 5

Calorimeter

Answer 5

A Device that measures the amount of heat in a chemical reaction

Question 6

Assumptions with calorimetetry

Answer 6

1), system isolated 2. heat, that is can be negligible 3, if something dissolves in water the resulting solution keeps the properties of water 4, under constantpressure

Question 7

Activation energy

Answer 7

The minimum energy required for the reaction to proceed

Question 8

Factors that affect the rate of a chemical reaction

Answer 8

1 nature of reactants 2. Temp of system 3. Concentration of reactants 4. Use catalysts