Unit 9 - Thermodynamics

Zeroth law of thermodynamics is:

• Kinetic energy of molecules of a gas is zero

• Ideal gas does not contain molecules

• If two systems are in thermal equilibrium with a third one, are also in equilibrium

• Absolute zero temperature cannot be obtained

What quantity of heat is required to raise the temperature of 45 grams of water from 15°C to 85°C? The specific heat capacity of water is 4.184 J/g/°C.

• 13000 J

• 16000 J

• 130 kJ

• 70 J

A measure of the amount of disorder or randomness in a system.

• Entropy

• Exothermic

• First Law of Thermodynamics

• Heat engine

A thermometer measures temperature which is best described as

• heat movement of particles
• average kinetic energy of particles
• calorimetry experiment
• specific heat of a substance

Measuring energy by measuring temperature changes of water is known as

• exothermic

• enthaply

• heat of fusion

• calorimetry

The amount of energy required to raise the temperature of 1 gram of a substance by 1^o C is known as:

• Specific heat capacity

• Heat of fusion

• Heat of vaporization

• Melting point

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A substance with a high specific heat capacity:

• Is always extremely hot.

• Requires a lot of energy to become hot.

• Is not heavy.

• Does not requires a lot of energy to become hot.

Stored energy that results from the position or shape of an object is called...

• Thermal
• Potential
• Kinetic
• Gravitational

A hot cup of tea absorbs thermal energy from a cold room.

• True
• False

Which one of the following is an exothermic process?

• Ice melting
• water evaporating
• boiling soup
• condesnation of water vapor