Match the following:Part A1. the reaction of a substance with oxygen, releasing heat energy and/or light 2. a process during which waste gases are expelled from an engine cylinder 3. the combustion process as it occurs outside the engine 4. a process that draws fuel mixture into an engine cylinder 5. an engine process during which fuel ignites and product gases push against the piston 6. a process that pressurizes the fuel mixture in an enginePart Ba. combustion b. compression stroke c. exhaust stroke d. external combustione. intake strokef. power stroke