Catalysts + Fuel + Activation + Bonds

Question 1

catalyst role

Answer 1

increase rate by providing a different pathway of lower activation energy

Question 2

activation energy

Answer 2

specific amount required to start a reaction

Question 3

endothermic

Answer 3

decrease in temperature , activation energy higher, energy needed to break bonds, bendo

Question 4

exothermic

Answer 4

increase temperature, energy released to make bonds, mexo

Question 5

bond energy

Answer 5

energy needed to break bond

Question 6

complete combustion

Answer 6

CH4 + 2O2 > CO2 + 2H2O

Question 7

battery

Answer 7

2 or more cells, higher voltage = higher difference in metal reactivity

Question 8

which terminal loses electrons?

Answer 8

more reactive metal/ electrolyte

Question 9

pros hydrogen fuel

Answer 9

carbon free, no acid rain, reliable

Question 10

cons hydrogen fuel

Answer 10

difficult to store, expensive, explosive, fossil fuels

Question 11

hydrogen fuel

Answer 11

react with steam

Question 12

pros battery cell

Answer 12

no fossil fuels, cheaper

Question 13

pros fuel cell

Answer 13

not replacing, carbon free, good supply