Particle Motion
What happens to particle motion when thermal energy is added?
The particles move faster.
What are the three main stages of matter?
Solid, liquid, gas.
What are the three main states of matter?
Solid, liquid, gas.
What tool do we use to measure temperature?
Thermometer.
When is the winter solstice?
December 21st.
How does particle motion change during melting?
Particles gain enough energy to overcome attractions and move more freely.
Describe what happens during boiling.
Liquid molecules gain enough energy to break free and enter the gaseous state.
In which state of matter do particles have the least amount of energy?
Solid.
What is absolute zero?
The temperature at which all particle motion stops (0 Kelvin, -273.1 Celsius)
How many teeth are in an adult human's mouth?
32.
Describe the particles motion in solids compared to gases.
In solids, particles are closely packed and vibrate in place; in gases, particles are far apart and move freely.
What is condensation?
Condensation is the process where gas turns into a liquid.
What happens to the particles in a substance when it changes from a solid to a liquid?
The particles gain energy and move more freely.
What happens to the temperature of a substance as it changes from a liquid to a gas?
It increases, until a boiling point is reached.
What year did the Titanic sink?
April 14, 1912.
What effect does cooling have on particle motion?
Cooling slows down particle motion.
Define deposition.
Deposition is the process of a gas turning directly into a solid, as a result of extreme cold temperatures.
Which state of matter has a definite volume but no definite shape?
Liquid.
What is the boiling point of water at sea level in degrees Celsius?
100 degrees Celsius.
When was the Declaration of Independence signed?
August 2, 1776.
Explain how particle motion is affected by temperature.
Particles move faster when temperature increase, and they move slower when temperature decreases.
Define sublimation and give an example.
Sublimation is the process of a solid turning directly into a gas, like dry ice turning into CO2 gas.
What is the term for a substance that can exist in all three states of matter?
Water (it can be ice, liquid water, or steam).
When happens to the particles when thermal energy is added to a substance?
The particles move faster and may change state of matter.
What is the scientific name for the phenomenon that causes the Northern Lights?
Aurora Borealis.