Question

1. read the passage which describes aspects of the behavior of gases. select the option with the list of words that best completes the blanks in the passage in the order given.

gas particles will __ to occupy the available space in the container. the large amount of space between gas particles also means that the volume of the gas can be made to decrease if the pressure on the gas is . this will lead to collisions between particles. decreasing the gas volume in this way is a measure of the gas’s __.
options:

• expand; increased; fewer; kinetic energy
• contract; increased; fewer; compressibility
• expand; increased; more; compressibility
• contract; decreased; more; kinetic energy

Explanation:

1. First blank: Gas particles spread out to fill space, so "expand" is correct (not "contract" which is the opposite).
2. Second blank: To decrease gas volume, pressure must be "increased" (more pressure pushes particles closer; "decreased" would let them spread).
3. Third blank: Increased pressure (smaller volume) leads to "more" collisions (particles are closer, so more frequent collisions).
4. Fourth blank: The ability to decrease volume under pressure is "compressibility" (not "kinetic energy" which relates to particle motion, not volume change under pressure).

Answer:

expand, increased, more, compressibility (the option with this list, likely the third option as marked in the image: "expand, increased, more, compressibility")