Exo and Endo
A reaction that gives out heat to the surroundings.
What is an exothermic reaction?
The concept that explains the reaction of moving particles.
What is collision theory?
The force holding atoms together in a molecule.
What is a bond?
The list of metals in order of their sensitivity.
What is the reactivity series?
A device that produces a voltage when supplied with a fuel and oxygen.
What is a fuel cell?
A reaction that takes in heat from the surroundings.
What is an endothermic reaction?
The energy needed to start a reaction between two particles.
What is activation energy?
The data held about the energy between different atoms in a molecule.
What is bond energy?
The reaction where a more reactive metal will take the place of a less reactive metal in a compound.
What is a displacement reaction?
This type of fuel cell is used to power public transport such as buses and trains.
What is a hydrogen fuel cell?
The metric used to determine if a reaction is exothermic or endothermic.
What is temperature change?
The graph representation used to determine if a process is exothermic or endothermic.
What is a reaction profile?
The units that bond energies are measured in.
What is kJ mol-1?
The solution containing ions that is used in a chemical cell.
What is electrolyte?
The product of the reaction between hydrogen and oxygen in a hydrogen fuel cell.
What is water?
Uses the benefits of an endothermic reaction.
What is an ice pack?
The endothermic process of turning a reactant into individual atoms.
What is bond breaking?
The overall energy change for the following reaction:
CH4 + 2O2 --> CO2 + 2H2O
Given:
C--H = 412 kJ mol-1 O=O = 498 kJ mol-1
C=O = 805 kJ mol-1 H--O = 465 kJ mol-1
What is -826 kJ mol-1?
The combination of multiple chemical cells together in a series.
What is a battery?
No greenhouse gases, e.g. CO2 or other pollutants are formed during the reaction.
What is a benefit of a hydrogen fuel cell?
Energy cannot be created or destroyed, only transformed from one form to another.
What is the 1st Law of Thermodynamics?
The exothermic process of forming a product from individual atoms.
What is bond making?
The overall energy change for the following reaction:
C4H10 + 13 O2 --> 8 CO2 + 10 H2O
Given:
C--C = 368 kJ mol-1
C--H = 412 kJ mol-1 O=O = 498 kJ mol-1
C=O = 805 kJ mol-1 H--O = 465 kJ mol-1
What is -10,482 kJ mol-1?
The particle that travels through the circuit in a chemical cell.
What is an electron?
Hydrogen gas is explosive.
What is a disadvantage of a hydrogen fuel cell?