Thermodynamics Chemistry

Heat is measured in 

• joules

• grams

• degrees celcius

The Law of _______________ states that energy cannot be created nor destroyed only transferred 

• Specific Heat

• Conservation of Energy

• Exothermic Reaction

• Potential Energy

Tags

NGSS.HS-PS3-4

Energy in exothermic reactions are

• released

• absorbed

Tags

NGSS.HS-PS1-4

Heat transfer [blank] occurs from hot to cold. 

• always

• never

• sometimes

• rarely

Tags

NGSS.HS-PS3-4

Where does the energy released in a chemical reaction come from?

• It is created.

• It comes from the kinetic energy of the moving particles.

• It comes from the potential energy stored in chemical bonds.

Tags

NGSS.HS-PS1-4

This law states that the energy in the universe is constant.  Energy cannot be created nor destroyed but changed from one form to another.  Which law is this?

• Third Law of thermodynamics

• Second Law of thermodynamics

• First Law of thermodynamics

Tags

NGSS.HS-PS3-1

The entropy(disorder) of the universe is always

• increasing

• decreasing

• staying the same

Which has more entropy, a solid liquid or a gas?

• gas

• liquid

• solid

Why does a gas have more entropy?

• gas molecules spread in random ways

• because gas is invisible

• gas has no energy

• they are small particles

Tags

NGSS.HS-PS1-5

What does an exergonic reaction do with energy?

• Releases Energy

• Stores Energy

Tags

NGSS.HS-PS1-4