Unit 1 - Quiz 2

When substances change from solid, to liquid, to gas, entropy increases. Why?

• The molecules become more randomly arranged

• The molecules become more structured and orderly

• The molecules become more reactive

• The molecules become more compact

Which state of matter has the LEAST entropy?

• solid

• liquid

• gas

Which state of H₂O  has the greatest entropy?

• Ice
• Water
• Vapor (gas)

The movement of thermal energy from a warmer object to a cooler object is called:

• heat

• temperature

• kinetic energy

• entropy

Heat transfer occurs:

• randomly in all directions

• from warmer objects to cooler objects

• from cooler objects to warmer objects

• from objects with more mass to objects with less mass

A measure of the average kinetic energy particles in an object is called:

• thermal energy

• heat

• entropy

• temperature

While a popsicle melts, the particles in the popsicle _____.

• gain kinetic energy

• move more slowly

• become more dense

• become more compact

The lowest possible temperature a substance could have is also known as

• Absolute zero

• Critical zero

• Kelvin zero

• Celsius zero

Water boils at 100 degrees on which scale?

• Farenheit
• Celsius
• Kelvin