Metric Systems , Gas Laws , Ideal Gas Law, & Combined Gas Law

Chemistry Quiz #1

1m =

100 cm & 1000 mm

1km =

1000m

1g =

100 cg & 1000 mg

1kg =

1000 g

1L =

100 cL , 1000 mL

1s =

1000 ms

5.2 cm to meters

2.48 × 10.³

Assume that 1 atmosphere gas

0 degrees C

Equation for Boyle’s Law

• Volume decreases, pressure increases (temp remains constant)

• Volume increases, pressure decreases (temp remains the same)

Equation for Charle’s Law

• Temperature increases particles move faster, volume increases (pressure remains constant)

• Temperature decreases move more slowly, volume decreases (pressure remains constant)

How do you convert Celsius to Kalvin?

K = C + 273

Equation Gay- Lussac’s Law

• Pressure increases, temperature increases, particles move faster (volume constant)

• Pressure decreases, temperature decreases, move slower (volume constant)

Quanity

of gas

Volume

gas which describes the amount of space the gas occupies

Temperature

gas which describes the average kinetic energy of the particles

Pressure

gas which describes the force and number of collisions of gas particles against the walls of its container.

1 kL

1000 L

Kinetic Molecular theory

• Particles far away from each other

• Constant random motion

• No energy loss (elastic collision)

• No attraction or repulsion

• Temp proportional to average kinetic energy

STP

Standard Temperature and Pressure, defined as 0°C (273.15 K) and 1 atm pressure, used for gas calculations.

Chemical Reactions

Processes where reactants transform into products, involving breaking and forming of bonds.

Combined Gas Laws

The relationship between the pressure, volume, and temperature of a fixed amount of gas, combined from Boyle's, Charles's, and Avogadro's laws.

What equation do you need for T1

What equation do you need for P1

What equation do you need for V1 

What equation do you need for T2 

What equation do you need for P2

What equation do you need for V2 

What is the only thing held constant in a combined gas law problem?

the amount of gas

Ideal Gas

A theoretical gas that perfectly follows the gas laws at all conditions, characterized by no intermolecular forces and that occupies no volume.

What equation do you need for N

What equation do you need for V

What equation do you need for P

What equation do you need for T

What equation do you need for R

In a combined gas law what can happen to the variables?

They can change while maintaining the relationship defined by the law.