Question

the behavior of gases color by numbers
directions: answer each question by circling the correct choice. after you have completed all the questions color the picture using the assigned colors. color any unnumbered sections according to the pattern.

question	choice a	choice b	choice c
2. if the pressure and the amount of gas are held constant, what happens to the volume as the temperature increases?	the volume decreases (light blue)	the volume increases (red orange)	the volume stays the same (red)
3. if a fixed amount of gas is held at a constant temperature, what happens to the pressure as the volume increases?	the pressure decreases (yellow green)	the pressure increases (green)	the pressure stays the same (red orange)
4. if the amount of gas in a container with flexible walls is increased, the volume _____.	decreases (light blue)	increases (blue)	stays the same (magenta)
5. temperature is a measure of the ______ of the particles within it.	mass (green)	volume (orange)	motion (yellow)
6. if a hairspray can is heated, what can be expected of the pressure of the gas inside the can?	the pressure will stay the same (brown)	the pressure will decrease (mahogany)	the pressure will increase (light brown)
7. pressure is created by the ______ of the collision of gas particles against the walls of the container.	force (magenta)	mass (blue)	volume (red)
8. which statement correctly describes a sample of gas?	it has a definite volume and shape (sky blue)	it takes the shape and the volume of any container (yellow orange)	it has a definite volume, and it takes the shape of the container. (purple)
9. pressure is always a ______.	push (aqua green)	pull (yellow)	negative (orange)
10. as the volume of a gas in a sealed container decreases, the pressure increases because the gas particles _____.	decrease in size (sky blue)	lose velocity within the container (magenta)	collide more often within the container (purple)
11. if 200 ml of a gas at 27°c is cooled to -33°c at a constant pressure, the volume will ______.	stay the same (yellow orange)	decrease (light blue)	increase (blue)
12. each of the shapes contains the same number of molecules of a gas. in which shape would the gas have a lower pressure?	(square, green)	(rectangle, orange)	(long narrow rectangle, sky blue)

Explanation:

Step1: Apply Charles's Law (Q1)

Charles's Law: $\frac{V_1}{T_1}=\frac{V_2}{T_2}$ (constant $P,n$). As $T$ increases, $V$ increases.

Step2: Apply Charles's Law (Q2)

Charles's Law: $\frac{V_1}{T_1}=\frac{V_2}{T_2}$ (constant $P,n$). As $T$ increases, $V$ increases.

Step3: Apply Boyle's Law (Q3)

Boyle's Law: $P_1V_1=P_2V_2$ (constant $T,n$). As $V$ increases, $P$ decreases.

Step4: Relate moles to volume (Q4)

At constant $P,T$, $V\propto n$. As $n$ increases, $V$ increases.

Step5: Define temperature (Q5)

Temperature measures particle kinetic motion.

Step6: Apply Gay-Lussac's Law (Q6)

Gay-Lussac's Law: $\frac{P_1}{T_1}=\frac{P_2}{T_2}$ (constant $V,n$). As $T$ increases, $P$ increases.

Step7: Define gas pressure (Q7)

Pressure comes from particle collision force on walls.

Step8: Identify gas properties (Q8)

Gases take container shape/volume, no fixed form.

Step9: Define pressure (Q9)

Pressure is a pushing force on surfaces.

Step10: Explain pressure-volume relation (Q10)

Smaller $V$ = more frequent particle collisions, higher $P$.

Step11: Calculate volume change (Q11)

Convert $T$ to Kelvin: $T_1=27+273=300\ \text{K}$, $T_2=-33+273=240\ \text{K}$.
Charles's Law: $V_2=V_1\times\frac{T_2}{T_1}=200\times\frac{240}{300}=160\ \text{mL}$. Volume decreases.

Step12: Relate volume to pressure (Q12)

Boyle's Law: $P\propto\frac{1}{V}$ (constant $T,n$). Larger volume = lower pressure.

Answer:

1. A. the volume increases (orange)
2. B. the volume increases (red orange)
3. A. the pressure decreases (yellow green)
4. B. increases (blue)
5. C. motion (yellow)
6. C. the pressure will increase (light brown)
7. A. force (magenta)
8. B. it takes the shape and the volume of any container (yellow orange)
9. A. push (aqua green)
10. C. collide more often within the container (purple)
11. B. decrease (light blue)
12. C. <long rectangular shape> (sky blue)