Temperature Flashcards
All matter is made of ___________
Atoms
Particles are always ___________ even if it doesn’t look like they are
Moving
What does the kinetic theory of matter state?
All of the particles that make up matter are constantly in motion.
Because particles are in ___________, they have KE
Motion
The ___________ the particles are moving the more KE they have
Faster
While the particles are constantly moving, the particles move in different ___________ and ___________
Directions and speeds. (This motion is random)
Individual particles of matter have ___________ amounts of kinetic energy
Different
Describe the particles in a solid.
They are not free to move around, vibrate back and forth in same position, and are held tightly together by forces of attraction
Describe the particles in a liquid.
Move much more freely that solids, they are constantly sliding and tumbling over each other as they move
Describe the particles in a gas
Particles are far apart and move around at high speeds, particles collide with each other, but otherwise they don’t interact much
What is temperature
The measure of the average KE in the particles of an object
What is absolute zero?
The temperature at which the motion of particles stops
What is absolute zero?
The temperature at which the motion of particles stops
How can i reach absolute zero?
It is not possible to actually reach absolute zero
What are the three common scales to measure temperature?
Kelvin, Celsius, Fahrenheit
Are Kelvin, Celsius, Fahrenheit the same thing?
No; 30 degrees on one scale is quite different on another
What two values are needed to establish a temperature scale?
Freezing and Boiling point of pure water
What are degrees?
Equally spaces units between two points. (Unit used to measure Celsius and Fahrenheit)
What is degree sign used for Kelvin?
No sign used
What tool is used to measure temperature?
Thermometer
What temperature scale is most commonly used by scientists around the world?
Celsius
When and who developed the celsius scale?
Anders Celsius, in the 1740’s
On the Celsius scale, pure water boils at _____ degrees, and freezes at ___ degrees.
Boils - 100; Freezes- 0
What scale is most commonly used in the US for measurements of temperature?
Fahrenheit
When and who developed the Fahrenheit scale?
Gabriel Fahrenheit; in the early 1700’s
On the Fahrenheit scale, pure water boils at ____, and freezes at _____.
Boils at 212, and freezes at 32
What temperature scale do physicists use the most?
Kelvin
The kelvin scale was not developed until the __th century
20th
On kelvin scale, you say # _________, instead of # degrees
KelvinS
On the kelvin scale water boils at ___, and freezes at ____.
373K boils
273K freezes
What is the lowest temperature on the kelvin scale?
Absolute zero, or 0K
