Download presentation
Presentation is loading. Please wait.
Published byΠρίσκα Φραγκούδης Modified over 5 years ago
1
Temperature Kelvin Scale Fahrenheit Scale Celsius Scale
3
Important Temperatures to Remember
What is the boiling point of water? What is the freezing point of water? What is absolute zero?
4
Gas Laws Charles Law Boyles Law (pressure remains constant)
(Temperature remains constant)
5
Charles Law Examples As Temperature Increases Volume Increases
gas laws As Temperature Increases Volume Increases Pressure Remains Constant
6
Boyle’s Law As Pressure Increases Volume Decreases
Temperature remains the Same
8
Boiling point is defined as the temperature at which the vapor pressure of a liquid is equal to the atmospheric pressure In other words, it is the minimum temperature at which a matter which is in the liquid state gets converted to a matter in the gaseous or vapor state.
9
What is the difference between boiling and evaporation
Evaporation is vaporization that occurs at the surface of a liquid below its boiling point.
10
In water this occurs at 100 degrees Celsius at sea level.
Boiling is vaporization that occurs when the vapor pressure can overcome the atmospheric pressure. In water this occurs at 100 degrees Celsius at sea level.
11
So……..How does altitude affect the boiling point of water?
On a Mountain: Altitude is higher. Atmospheric pressure is lower. Boiling point is lower. Pressure cooker increases the pressure thus raising the boiling point. Food cooks quicker at higher temperature
12
Phase Changes
13
What happens to a time temp graph
if the amount of liquid (water) boiled is doubled? What changes on a time temp graph if two different substances are represented?
14
Note volume of ice and water
How do you explain the difference in volume ? Note volume of water
15
50 cc of ice 200 cc of water 200 J of heat
The more heat added the quicker the liquid reached the phase change.
16
Altitude: 0 m 200 Joules 200 cc of water 50 cc of ice Altitude: 10,000 m 200 Joules 200 cc of water 50 cc of ice
17
Endothermic : Adding Energy
Exothermic: Loosing Energy Endothermic : Adding Energy Altitude: 0 m 180 Joules 200 cc of water Altitude: 0 m --180 Joules 200 cc of water
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.