Gases 1 Chpt.9

What does SI stand for?

Standard International

What is the SI unit of volume?

M³, however this is too big for usual lab work. So we use L or cm³

What is 1m³ equal to?

1000cm x 1000cm x 1000cm

What is 1000cm x 1000cm x 1000cm also equal to?

10^6cm³

What is 1L equal to?

10cm x 10cm x 10cm

What is 10cm x 10cm x 10cm equal to?

1000cm³

What is temperature?

A measurement of how hot an object is

What is Celsius based on?

The boiling and freezing point of water.

What is Kelvin based on?

Based on the amount of energy in a substance

What does absolute zero mean?

It’s is the lowest theoretical temperature possible.

Theoretically, if a gas was at absolute zero, what would happen to it?

It would occupy zero volume and it could be cooled indefinitely without becoming a liquid or a solid.

What is 0K in °C?

-273.15°C

What is 0°C in K?

273.15K

What does the pressure of gas mean?

The force that a gas exerts on it’s containers

What is the units of pressure?

Neutons per metre squared (N/m²)

What are Neutons per metre squared (N/m²) usually referred to?

A pascal (Pa)

How many pascals are in 1kPa?

1000Pa

What is Earth’s at atmospheric standard pressure?

100kPa

What does STP stand for?

Standard Temperature and Pressure

What is the standard temperature?

273.15K (the freezing point of water)

What is the standard pressure?

100kPa (atmospheric pressure)

What does Boyle’s Law state?

At a constant temperature, the volume of fixed mass is inversely proportional of it’s pressure.

According to Boyle’s Law if the pressure of a gas increases, what will happen to the volume?

Volume will decrease.

According to Boyle’s Law if the pressure of a gas decrease, what will happen to the volume?

The volume will increase.