chem ltsc 2023

In a spark ignition engine, what is the first step of combustion?

• fuel is poured into the engine

• fuel is mixed with air

• fuel is mixed with steam

• the engine is turned

In a spark ignition engine, what is the second step of combustion?

• A large piston in the cylinder squeezes the mixture into a smaller space

• the fuel mixes in with oxygen to create a chemical reaction

• The cylinder is turned over and over, churning the contents inside

• A large piston in the cylinder squeezes the mixture into a larger space.

In a spark ignition engine, what is the third step of combustion?

• Afterwards, more air is added to the mixture to make the atoms move more quickly

• Next, the mixture travels in a long, air-tight tube to another compartment

• Once in the smaller space, the fuel is burned a the smoke powers the vehicle

• Next, a small spark ignites the fuel-air

  mixture and the mixture undergoes combustion

In a spark ignition engine, what is the fourth step of combustion?

• After they have pushed the pistons, the gases then

  leave the engine through the car’s tailpipe

• After pushing the other piston, the gases exit the vehicle through the catalytic converter

• The gases push another piston, which creates a chemical reaction with more gases

• Lastly, the pressure from the gases move the axels that the wheels are on, causing them to spin.

In an internal combustion engine, what are the four steps of cuombustion in order?

• intake, power, compression, exhaust

• compression, ignition, exhaust, power

• intake, compression, power, exhaust

• ignition, compression, exhaust, power

this is the equation for what

• incomplete combustion of methane

• transesterification

• first chemical reaction in electrolysis

• complete combustion of methane

this is the chemical equation for what?

• first chemical reaction in electrolysis

• second reaction is electrolysis

• complete combustion of methane

• incomplete combustion of ethanol

This is the chemical equation for what?

• the reaction in an internal combustion engine

• complete combustion reaction

• the chemical reaction in a hydrogen internal combustion engine

• transesterification

Out of these, what are three of the challenges of creating Hydrogen Fuel Cell Vehicles?

• mining

• cost

• technology

• pollution

• transportation

Out of these, what are two of the challenges of creating Hydrogen Fuel Cell Vehicles?

• lack of awareness

• employing workers

• lack of available mechnical parts

• availability of hydrogen