Vocabulary
Kinetic Energy
energy of motion
What are the three states of matter?
The three states of matter are gas, liquid, and solid
What are the three temperature scales?
Fahrenheit, Celsius, Kelvin
What is an example of thermal expansion?
expansion joints, the metal ball and ring, the wooden door not being able to close in the summertime
Mass
The amount of matter an object has
In which state of matter do particles have the least kinetic energy?
Solids
What temperature does water freeze on the Fahrenheit scale?
32 degrees Fahrenheit
At what temperature does water freeze on the Celsius scale?
0 degrees Celsius
Matter
The amount of particles the object has
True of false: liquids have a true shape
False
What is the definition of temperature?
The average kinetic energy of a substance
Which state of matter does diffusion occur most easily in?
gases
Volume
The amount of space an object occupies
In which state of matter do particles have the most kinetic energy?
Gases
At what temperature does water boil on the Celsius scale?
100 degrees Celsius
Why are expansion joints used on bridges and sidewalks?
Expansion joints are used because the particles in these substances contract in the winter and expand in the summer which causes it to crack or break
Diffusion
Movement of particles or molecules from an area of high concentration to low concentration
Describe the movement of particles in all three states of matter
Solids - particles vibrate in place
Liquids - particles slide past each other
Gases - particles move fast, crash into each other and bounce away
What does the temperature need to be on the Kelvin scale for particles to stop moving?
Absolute 0 Kelvin
True or false: If a substance has an increased mass then its kinetic energy increases as well
True