Intro To Gases

Question 1

What are the three phases of matter?

Answer 1

solid
liquid
gas

Question 2

Compare solid, liquid, gas in terms of shape, volume, and particle movement

Answer 2

Solid: definite shape and volume
Liquid: definite volume, takes shape of contaimer
Gas: takes shape and volume of container; fast particle movement

particle movement increases going from solid -> liquid -> gas

Question 3

What are the 4 variables of gas?

Answer 3

• Pressure (P)
• Volume (V)
• Temperature (T)
• Amount of gas (n)

Question 4

Know the relationship between different pressure units. Ex: 1 atm = ?

Answer 4

1 atm =

• 760 mmHg
• 760 torr
• 1.01325 x 10⁵ Pa
• (29.92 Hg)
• (14.7 psi)

Question 5

Know the relationship between different pressure units. Ex: 1 kPa = ?

Answer 5

1000 Pa

Question 6

What is the formula for converting from Celcius to Farenheight

Answer 6

F = 1.8 (C) + 32

Question 7

What is the formula for converting from Farenheight to Celcius

Answer 7

C = F - 32 / 1.8

( i think lol )

Question 8

What is the formula for converting from Celcius to Kelvin

Answer 8

K = C + 273

Question 9

What is the formula for converting from Kelvin to Celcius

Answer 9

C = K - 273

Question 10

What order would you need to convert to find Farenheight given Kelvin

Answer 10

K -> C -> F

Question 11

T/F: The volume of gas is NOT equal to the size of the container in which the gas is placed in

Answer 11

False, the volume of gas IS equal to the size of the container that gas is in, because gas takes the volume and shape of a container its in.

Question 12

1mL = ? cc (cm³)

Answer 12

1 cc (cm³)

Question 13

When solving equations, according to gas law, the units used for temperature should always be in ______

Answer 13

Kelvin

Question 14

What is the relationship between temperature and molecule movement?

Answer 14

↑temp = ↑molecule mvt/speed
↓temp = ↓molecule mvt/speed

Question 15

“Amount” is a property of gas, which measures the quantity of gas present in a container. The units for these are _______ or _______

Answer 15

grams (g) or moles (m)

Question 16

Who is the father of modern chemistry?

Answer 16

Robert Boyle

Question 17

What is Boyles law? What are the two variables involved and how do they relate to one another?

Answer 17

Boyles law: Pressure and volume are inversely related at a constant temperature

↑Pressure = ↓Volume
↓Pressure = ↑Volume

Question 18

What is the equation used for Boyles law?

Answer 18

P₁V₁ = P₂V₂

Question 19

What is Charles law? What are the two variables involved and how do they relate to one another?

Answer 19

Charles law: volume of gas varies directly with the absolute temperature at a constant pressure

↑Volume = ↑Temperature
↓Volume = ↓Temperature

Question 20

What is the equation for Charles Law?

Answer 20

V₁/T₁ = V₂/T₂

Question 21

Define: Aura

Answer 21

eruption of gasses by the sun

Question 22

What is Gay-Lussac’s law? What are the two variables involved and how do they relate to one another?

Answer 22

Gay-Lussac Law: Pressure and absolute temperature are directly related at a constant volume

↑Pressure = ↑Temperature
↓Pressure = ↓Temperature

Question 23

What is the equation for Gay Lussac’s Law?

Answer 23

P₁/T₁ = P₂/T₂

Question 24

What is Avogadros’s law? What are the two variables involved and how do they relate to one another?

Answer 24

Avogadros Law: The volume of gas is directly related to the number of moles at a constant temperature and pressure

Question 25

What is the formula for avogadros law?

Answer 25

V₁/n₁ = V₂/n₂

Question 26

What is Daltons’s law?

Answer 26

total pressure is the sum of the partial pressures

Question 27

What is the formula for the combined gas law?

Answer 27

P₁V₁/T₁ = P₂V₂/T₂

Question 28

What does STP stand for?

Answer 28

Standard Temperature and Pressure

Question 29

At STP,
- Temperature = ?
- Pressure =?
- Volume of 1 mol gas =

Answer 29

Temperature = O°C (273K)
Pressure = 1 atm (760mmHg)
Vol 1 mol gas = 22.4L