definitions
particle
small unit of matter
Thermal expansion
Increase in volume of a material when the particle motion increases
When a substance is heated, the particles gain energy and move apart, increasing the volume. The mass of the substance being heated does what
stays the same
Bars of metals are all heated to 100 degrees celsius to determine how their volume and length would be affected. What happens to the volume and length?
All of the volumes change and so do their lengths
Random motion
movement in all directions at different speeds
thermal contraction
When particle motion decreases and causes the particles to occupy less volume
When temperature increases the average blank increases
Kinetic energy
kinetic energy
the energy of motion
Temperature
The measure of the average kinetic energy of the particles in a material
A liquid thermometer works because liquid does what when warmed
expands
thermodynamics
the study of heat
Bonus-what is diffusion
Movement of particles from an area of higher concentration to an area of lower concentration
What type of change happens when water has been left in a pot on a hot stove and bubbles form throughout a liquid and rise to the top?
The water Boils