2.08: Laws of Thermodynamics, 2.09: Heat Energy and Matter

Multiple Choice

As a material is heated, it's particles....

• get smaller
• slow down
• get cooler
• move more quickly

Multiple Choice

What state of matter forms a geometric pattern?  It is also the coldest state of matter.

• solid
• liquid
• gas

Multiple Choice

A measure of the average kinetic energy of the particles in a sample of matter.

• temperature
• meter
• second

Multiple Choice

The Law of Conservation of Energy states:

• Energy can created or destroyed but not transformed

• Energy cannot be created or destroyed, it can only transformed

• Energy can't be created, destroyed or transformed

• Energy cannot be created or destroyed.

Multiple Choice

What kind of energy does an object possess when it's resting on top of the hill?

• Potential Energy

• Chemical Energy

• Kinetic Energy

• All of the above

Multiple Choice

The law of energy conservation says the total energy before the change _______ the total energy after it

• is less than
• is more than
• affects
• equals

Multiple Choice

Entropy increases from solid, liquid to gas. Why?

• Molecular disorder increases
• Molecular randomness decreases
• Molecules are more energetic
• Molecules are more reactive

Multiple Choice

Systems in nature tend to undergo changes toward

• lower energy and less disorder

• lower energy and more disorder

• higher energy and less disorder

• higher energy and more disorder

Multiple Choice

At what temperature is this substance melting?

• 50C
• 100C
• 0C

Multiple Choice

What state/phase is the object likely from points A to B?

• Solid

• Liquid

• Gas

• Plasma

Multiple Select

Where on the graph are phase changes taking place?

• 1

• 2

• 3

• 4

• 5

Multiple Choice

Is the substance gaining or losing energy?

• Gaining

• Losing