Kmt

Thermal energy is the "total KE of particles in a substance," which means....

• speed of particles and mass

• just the speed of particles

• just the mass of the substance

• it's the same thing as temperature

Tags

NGSS.HS-PS3-4

What is the melting point of a substance?

• the time it takes for it to melt

• the temperature at which it melts

• the amount of energy needed to melt it

• where the line slopes upward

Tags

NGSS.HS-PS1-1

NGSS.HS-PS3-4

In which segment(s) is heat being used to overcome cohesion, NOT to make molecules increase speed?

• A-B only.

• A-B, C-D, E-F

• B-C only.

• B-C, D-E

Tags

NGSS.HS-PS3-4

Between which points is the substance changing state?

• A-B only. 

• A-B, C-D, E-F

• B-C only. 

• B-C, D-E

Tags

NGSS.MS-PS1-4

Which of the following is not one of the assumptions of the kinetic molecular theory for ideal gases?

• The particles attract and then repel each other.

• The collisions between particles are elastic

• The particles are in constant random motion.

• The particle size is very small compared to the space between the particles.

Oxygen gas is at a temperature of 40^oC when it occupies a volume of 2.3 liters. To what temperature should it be raised to occupy a volume of 6.5 liters?

• 611.84^oC

• 611.84 K

• 880.33 K

• 880.33^oC

Determine the Kelvin temperature required for 0.0470 mol of gas to fill a balloon to 1.20 L under .998 atm pressure.

• 0 K

• 107 K

• 207 K

• 307 K

What pressure, in atm, is exerted by 2.50 L of gas containing 1.35 mol at 320 K?

• 14.19 atm

• 16.53 atm

• 18.42 atm

• 22.54 atm

Collisions in which particles transfer all their kinetic energy to other particles are called ___.

• elastic

• inelastic

We can increase the pressure of a gas by:

(Check all that apply)

• Adding more gas.

• Reduce the volume of the container.

• Increase the temperature of the gas.

• None of the above answers.

Tags

NGSS.MS-PS1-4