States of Matter
Name the 3 states of matter.
Solids, Liquids, and Gases.
How would you draw particles in a solid?
Particles closely packed, regular pattern.
What is the change of state from solid to liquid called?
Melting.
What is diffusion?
The spreading of particles from high concentration to low concentration.
What causes air pressure?
Collisions of particles with surfaces.
What state of matter is water at 0 degrees Celsius?
Ice/Solid.
How would you draw the particles in a liquid?
Particles close together but not in a fixed pattern.
What is the change of state from liquid to gas called?
Evaporation or boiling.
Give one example of diffusion in everyday life.
A smell spreading in a room.
Which way does pressure act in a liquid?
Pressure acts in all directions.
What type of movement do solids show?
They vibrate.
Particles far apart, moving quickly and randomly.
Name the change of state when gas turns into a liquid.
Condensation.
How does temperature affect the rate of diffusion?
Higher temperature increases particle movement, so diffusion is faster.
Does air pressure increase or decrease with height?
Decrease.
In which state do particles move the fastest?
Gases.
Where in a box should you draw the particles of a liquid?
What is the change of state from a liquid to a solid?
Freezing.
How does diffusion distance affect diffusion?
Shorter distance for particles to diffuse = faster.
Does water pressure increase or decrease with depth?
Increase.
In which state are particles most strongly held together?
Solid.
Drawn randomly.
A substance has a melting point of -10°C and a boiling point of 80°C. What state of matter is it at room temperature (25°C)?
Liquid.
How does the concentration gradient affect the rate of diffusion?
A larger difference in concentration (steeper gradient) makes diffusion faster.
Why does air pressure increase when temperature rises?
Heating makes air particles move faster, so they collide more often, increasing pressure.