Tag: the particle theory

Quizzes (2) Questions (19)

Questions Related to the particle theory

Multiple choice chemistry the particle theory atmospheric pressure and boiling point evaporation - factors and effects in daily life changes in physical state - boiling, evaporation and condensation

Cycle tube when filled with an air, it swells up because of the pressure exerted by the particles of the air in the tube.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cycle tube when filled with the air it swells up because of the pressure exerted by the particles of the air present in the tube. The particles of air collide with each other and exert pressure on the walls of the tube.

Multiple choice chemistry the particle theory atmospheric pressure and boiling point evaporation - factors and effects in daily life changes in physical state - boiling, evaporation and condensation

Which of the following is not the unit of atmosperhic pressure?

  1. $Pascal$
  2. $N/m^2$
  3. $N/m$
  4. $76\ cm\ of\ Hg$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The unit of the pressure is $pascal$. $N/m^2$, and $76\ cm\ of\ Hg$.

Here $N/m$ is the unit of the surface tension. 
Thus option C is the correct answer.

Multiple choice chemistry the particle theory atmospheric pressure and boiling point evaporation - factors and effects in daily life changes in physical state - boiling, evaporation and condensation

The atmospheric pressure remains unchanged throughout the earth's atmosphere.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The atmospheric pressure changes throughout the atmosphere.
Example: As we go up in the air, the atmospheric decreases as the density of the air decreases. 

Multiple choice chemistry the particle theory atmospheric pressure and boiling point evaporation - factors and effects in daily life changes in physical state - boiling, evaporation and condensation

Usually the atmospheric pressure is equal to ___________.

  1. $1.013\times 10^{5}$ Pascal
  2. $1.013\times10^{5}N/m^2$
  3. $101.3\ kPa$

  4. all of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The atmospheric pressure can be given as $1.013\times 10^{5}\ pascals$ or $1.013\times10^{5}\ N/m^2$.

Multiple choice chemistry the particle theory atmospheric pressure and boiling point evaporation - factors and effects in daily life changes in physical state - boiling, evaporation and condensation

Pressure can be measured by using Mercuric as well as Aneroid barometer.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In 1643 Torricelli made an instrument for measuring atmospheric pressure. This device is called a barometer. This barometer can be either mercuric or aneroid barometer. 

Multiple choice chemistry the particle theory atmospheric pressure and boiling point evaporation - factors and effects in daily life changes in physical state - boiling, evaporation and condensation

In human body, the pressure exerted by the cells is ________ the atmospheric pressure.

  1. equal to

  2. more than

  3. slightly greater than

  4. greater than
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In the human body, the pressure exerted by the cells in our body is equal to the atmospheric pressure. Hence we do not get shrunk.

Multiple choice chemistry the particle theory diffusion in different states of matter properties of solids, liquid, and gas particle theory of matter

The rate of diffusion of liquids is __________.

  1. higher than gases

  2. lower than solids

  3. higher than solids

  4. equal to gases
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The rate of diffusion of liquids is higher than that of solids. This is due to the fact that in the liquid state, particles move freely and have greater space between each other as compared to particles in the solid state.

Multiple choice chemistry the particle theory diffusion in different states of matter properties of solids, liquid, and gas particle theory of matter

________ can usually be reduced by heating the liquid.

  1. Pressure

  2. Temprature

  3. Latent heat

  4. Viscosity
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Viscosity is a measure of how much a liquid resists flowing freely. Viscosity can usually be reduced by heating the liquid. When heated, the particles of the liquid move faster, allowing the liquid to flow more easily.

Multiple choice chemistry the particle theory diffusion in different states of matter properties of solids, liquid, and gas particle theory of matter

Volatile liquids have ___________.

  1. low viscosity

  2. high boiling point

  3. low boiling point

  4. none of above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Volatile liquids have low boiling point. As a result, they evaporate very easily at room temperature. Because of their low boiling points, volatile liquids convert to the gas phase at a lower temperature and the gas molecules can diffuse faster than the molecules of a non-volatile liquid.