Thermodynamics

Do molecules generally move faster at 45 C or 106 C?

• 45 C because molecules have more energy than in 106C

• 106 C because molecules have more energy than in 45C

• 106 C because molecules have less energy than in 45C

• 45C because molecules have less energy than in 106 C

Tags

NGSS.HS-PS1-5

When you place the metal in boiling water, heat flows from the _________ to the _______.

• metal to the boiling water

• bottom of the metal to the top half of the metal

• bottom of the water to the top of the water

• boiling water to the metal

Tags

NGSS.HS-PS3-4

Define ΔH

• Change in Specific Heat; Heat by one Degree Celsius

• Change in Temperature; the energy we calculate; Degree Celsius

• Change in Enthalpy; the energy/heat we calculate

• Change in Time; time travel

Specific Heat is..

• the temperature initial minus temperature final

• the amount of heat/energy required to raise 1 gram of a substance by 1°C (or K) aka "C"

• the temperature final minus temperature initial

• the item in a system with given weight in grams

Tags

NGSS.HS-PS3-4

A slower particle has a lower energy than an identical, faster particle.

• True
• False

Tags

NGSS.HS-PS3-2

Temperature is a measure of the...

• total energy in a substance
• total kinetic energy in a substance
• average potential energy in a substance
• average kinetic energy of molecules in a substance

Tags

NGSS.HS-PS3-2

A(n) _____________ is a device for measuring temperature.

• thermometer
• barometer
• anemometer
• psychrometer 

Thermal energy always moves:

• From a high temperature object to a lower temperature object.
• From a lower temperature object to a higher temperature object.
• From an object with lower kinetic energy to an object with higher kinetic energy.
• From an object of higher mass to an object of lower mass.

Tags

NGSS.HS-PS3-4

The first law of thermodynamics states that energy is

• created
• destroyed
• conserved
• created and destroyed

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-4

The variable foe HEAT

• Q

• C

• T

Tags

NGSS.HS-PS3-4