vocab
condensation
the change of state from gas to liquid
random motion
movement in all directions at different speeds
Temperature
Measure of the average kinetic energy of the particles in a material
bars of different metals are all heated to 100 degrees celsius to determine how their volume and length would be affected. What happened?
all the volumes change and so do their lengths..
Thermal energy can _______ even if the average kinetic energy is constant.
Increase
vaporization
the change of liquid to gas
Kinetic energy
the energy of motion
when a substance is heated, the particles gain energy and move apart, increasing the volume. The mass of the substance being heated?
stays the same
what kind of energy is transferred from the element to the water when water is heated on the stove.
Adding thermal energy to a cup of water may cause the particles to _______.
Move faster
potential energy
The stored energy due to the interactions between particles on objects
Thermodynamics
the study of heat
When temperature increases, the average ________ increases.
kinetic energy
while a substance is boiling its temperature _____
may increase or decrease depending on the substance
During a hot shower, water vapor fogs up the cooler mirror when it turns to water. What is this an example of?
condensation
Thermal energy
The total kinetic energy and potential energy in a substance
Thermal expansion
Increase the volume of a material when particles motion increases
a liquid thermometer works because liquid _____ when warmed.
expands
when ice melts from a pond in the spring what happens to the air above the pond and why?
The air above becomes cooler because the melting ice absorbs the heat from the air
Pollo put a pot of water on to boil eggs. Half an hour later, she returned to find the pot dry. what is this an example of?
vaporization
particle
a small unit of matter
Thermal contraction
when particle motion decreases and causes the particles to occupy less volume
what type of change happens when water has been left in a pot on a hot stove and bubbles form throughout the liquid and rise to the top?
boiling
why are different solids, liquids, or gases at room temperature?
The arrangement, movement, and energy of particles are different in each substance.
what is diffusion?
Movement of particles from an area of higher concentration to an area of lower concentration.