In a coal-fired power plant, after the steam has been used to turn the turbine to power the generator, it goes through a condenser. WhatтАЩs happening in this process?
A.a phase change from a liquid togas
B.a phase change from gas to liquid
C.an energy change from kinetic energy to potential energy
D.an energy change from heat energy to kinetic energy
Suppose you cut an apple into 4 slices and then eat it. Your body digests it and uses the energy from the apple to help your body grow. Pick the correct physical and chemical changes from the following list
A.physical changes = cutting the apple; chemical changes = digesting the apple, your body growing
B.physical changes = cutting the apple, your body growing; chemical changes = digesting the apple
C.physical changes = body growing; chemical changes = digesting and cutting the apple
D.physical changes = digesting the apple; chemical changes = your body growing
Suppose you have a gas under 2 atm of pressure and taking up 0.5 m3 of volume. If you compress the gas so that it takes up 0.1 m3 of volume, what is the new pressure of the gas?
When coal is placed into a burner, what type of energy is being supplied to the burner?
A.light
B.nuclear
C.chemical
What is chemical energy?
A.the form of energy that we perceive with our eyes
B.the energy of motio
C.the energy that does work through chemical reactions
In a coal-burning power plant, a condenser is used to cool down the steam and convert it back to liquid water.
true
false
A windmill converts the chemical energy of the wind to nuclear energy at a wind power plant.
true
false
