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PB Basic Thermo

Last updated over 2 years ago

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Question 43

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TK = 273 + T˚C

True

False

T˚C = 273 + TK

True

False

TK = 237 + T˚C

True

False

0 K = 273 ˚C

True

False

0 Kelvin is the lowest possible temperature.

True

False

It takes more energy to heat or cool a large sample of a substance than it does for a small sample of the substance.

True

False

The particles in 100.0 g of a liquid at 50.0˚C are moving more slowly than the particles of 25.0 g of the liquid at the same temperature. 

True

False

Boiling occurs when particles are able to escape from within the liquid.

True

False

Evaporation occurs when particles on the surface of the liquid escape into the surroundings.

True

False

Evaporation occurs at a variety of temperatures.

True

False

In order for a liquid to boil, the particles have to have enough energy to escape from the liquid.

True

False

When a solid is in the process of melting, the particles are moving faster.

True

False

When a solid is in the process of melting, the particles are moving farther apart.

True

False

As the temperature of a solid increases, the particles vibrate more energetically.

True

False

A 10.00 g sample of iron at 75˚C has more 'heat' than a 50.00 g sample.

True

False

Endothermic processes involve the loss of energy from the system.

True

False

Calories are a unit of thermal energy.

True

False

Heat is sometimes defined as the total amount (the sum) of kinetic energy in a system.

True

False

The boiling point of a substance (at a constant atmospheric pressure) is always the same.

True

False

On the particle level, energy is transfered by means of elastic collisions.

True

False

If two particles collide in an elastic collision, the faster particle will typically slow down and the slower particle will speed up.

True

False

The higher the temperature of 25.0 g of a substance, the smaller its density.

True

False

Heat rises.

True

False

Heat is technically defined as the flow of thermal energy.

True

False

The temperature of 10.0 g of boiling water is less than the temperature of 100.0 of boiling water.

True

False

Temperature is an extensive property.

True

False

Gases have a great deal of freedom of motion.

True

False

The higher the temperature of a substance, the greater the volume of the substance tends to be.

True

False

The higher the temperature of a substance, the faster the particles are moving.

True

False

The higher the temperature of a substance, the heavier the particles are.

True

False

Solids have a high Ep.

True

False

The farther apart particles are, the greater their positional energy.

True

False

The faster a particle is moving, the greater the kinetic energy of the particle.

True

False

Temperature is associated with the motion of particles.

True

False

Temperature is associated with average Ep.

True

False

Positional energy is measured in ˚C.

True

False

Energy is measured in Joules.

True

False

Energy is measured in Newtons.

True

False

Energy is the ability to cause a change.

True

False

Energy is conserved in elastic collisions.

True

False

The first law of thermodynamics is often referred to as the law of conservation of mass.

True

False

Energy is defined as a push or a pull.

True

False

I think I have a good understanding of heat and temperature and how they relate to matter on the particle level.

True

False