SCIENCE 10-GASES

What is the shape and volume of a gas?

• Definite shape, definite volume

• Indefinite shape, definite volume

• indefinite shape, indefinite volume

• definite shape, indefinite volume

Which of the following best explains why gases are easily compressed?

• gas particles are tightly packed together

• gas particles are far apart from one another

• gas particles do not move

• gas particles attract each other strongly

What happens to the movement of gas particles when the temperature increases?

• they stop moving

• they move slower

• they move faster

• they become solid

Which statement about gases is false?

• Gases have low densities compared to solids and liquids.

• Gases take the shape of their container.

• Gas particles are arranged in a fixed, compact structure.

• gases expand when pressure is applied.

What is the primary reason gas particles move freely?

• They have strong intermolecular forces

• They have weak intermolecular forces

• They are heavier than liquids and solids

• They do not possess kinetic energy

Which scientist contributed to the understanding of gas behavior through kinetic energy?

• Charles Darwin

• James Clerk Maxwell

• Albert Einstein

• Antoine Lavoisier

According to the Kinetic Molecular Theory, gas particles are always: 

• Fixed in position

• Attracting one another

• Moving in constant, random motion

• Moving in a single direction

What happens when gas particles collide with each other or the walls of a container?

• They stop moving

• They lose energy

• Their collisions are perfectly elastic

• They form a solid

Which of the following is not a postulate of the Kinetic Molecular Theory?

• Gas molecules are far apart compared to their size

• Gas molecules exert strong attractive forces on one another

• Gas particles move randomly and constantly

• The kinetic energy of gas particles depends on temperature

What happens to gas particles when the temperature is reduced?

• They move slower

• They move faster

• They expand

• They become lighter