(Q4) 1- Kinetic Molecular Theory

 Gas pressure is caused by _____________.

• Gas molecules colliding with surfaces.

• Gas molecules condensing to a liquid.

• Gas molecules attach other gas molecule.

• Gas molecules repel other gas molecule.

 

Which of the following is not true about the volume of a gas?

• Most of the volume is empty space.

• The volume is occupied by particles in continuous, rapid, random motion.

• The volume is about 10 times greater than that occupied by an equal number of particles in the liquid or solid state.

• Generally, the volume can be easily changed.

Mass is ________________________________.

• The amount of matter in an object.

• Anything that has Mass and volume.

• The amount of space an object occupies.

• The amount of volume an object has.

Which is true about gas molecule?

• Gases do not move in straight line.

• Most of the volume of gas is empty space.

• Gas particles are not in constant random motion.

• Gas particles attract each other.

Volume is _______________________.

• The amount of matter an object has.

• The amount of space an object occupies.

• Anything that mass and volume.

• No correct answer.

Which best describes particles in a liquid?

• less freely moving than a solid

• more freely moving than a gas

• more freely moving than a solid

• completely unmoving

Mr. G showed the class a container of salt. He poured the salt into a cup. What state of matter is the salt in and why?

• Salt is a liquid because it takes the shape of the container.

• Salt is a liquid because it pours just like water does.

• Salt is a solid because it takes the shape of its container.

• Salt is a solid because each salt crystal has a definite shape.

The melting point of a substance is __________ its freezing point.

• independent of

• the same as

• greater than

• less than

The following are true about solid except ______________.

• Very little space between particles.

• Particles with no definite pattern.

• Particles that hold a very definite pattern.

• Particles that only vibrate in place.

Which of the physical states of water contains particles with the lowest kinetic energy?

• Water

• Ice

• Steam

• Melting ice