chapter 5

energy of combustion is....

• the process of converting water into steam

• energy we get from burning staff

• the conversion of solid materials into gases

• chemical reaction between a fuel and oxygen that produces heat and light

What is required for combustion to occur?

• water

• carbon dioxide

• oxygen

• Carbon monoxide

What is the primary purpose of combustion in engines?

• To produce light

• To generate electricity

• To produce mechanical energy

• Dissociation

What happens to the energy released during combustion?

• disappears

• converted into light and sound

• transferred to the surroundings as heat

What is the primary use of coal?

• Cooking food

• Generating electricity

• Purifying water

Coal is used to create electricity in power plant

• true

• false

coal isn't a complex mixture of substances

• true

• false

After combustion, what is the next step in generating electricity from coal?

• 14. steam turbine operation

• combustion

• boiler operation (water turns steam)

• Transmission

Which of the following best defines energy?

• the ability to do work

• the speed of an object

• movement against a force

• weight of an object

the word "work" means....

• consequence of motion at the molecular level

• movement against a force

• the distance traveled by an object

• newton