UNIT 7 ( kinetic model of matter)

MATTER is what makes up all objects/substances

• - matter is something that occupies space

• -matter exist in mainly 3 states ( meaning there are other states BUT I'll focus on these main 3)

you,me,buildings,air and even people you dislike are matters,even when they don't "matter"

STATES: ( not states of a country)
states- forms of matter ( the form they appear to you in)
3 main states:

1. SOLID
2. LIQUID
3. GAS

properties of SOLID

• fixed shape & volume
  
• normally hard
  
• high density
• incompressible
  

examples:alloys,diamond,wood,paper
because solids are hard,have a fixed shapes,volume and are high in density,they usually take a GREAT force to change its shape.my advice is don't knock your head against any type of solid.

properties of LIQUID

• fixed volume
• no fixed shape
  
• high density
  
• incompressible

examples:rain,oil

properties off GAS

• no fixed shape
• no fixed volume
• low density
  
• compressible

examples:steam,air

case example: water is a matter,it can exist in all three of these sates
when it is a solid, its is ICE
when it is a liquid,it is WATER
when it is a gas,it is STEAM

kinetic model of matter:
determines the properties of each state

ARRANGEMENT OF PARTICLES:

SOLID- closely packed
- regular pattern
- occupies minimum space
results in high density,as there are little intermolecular spaces

-the particles vibrate about fixed positions due to the strong intermolecular bonds
this is why solids have fixed shapes and volumes.

LIQUID- particles are further apart compared to that of solids,but still "packed"
-random pattern
results in high density,as they also have little intermolecular spaces

-the particles are free to move about in the vessel containing it ONLY,they have attractive forces!this is why liquids can take up the shape of its vessel.reason being the particles can only slide pass each other,but not entirely break free.

GAS- very far apart
- randomly arranged
-occupies any given space

results in low densities,it can also be compressed as there are a lot of intermolecular space,thus they have no fixed volume and shape.

-particles move about at high speeds,randomly and have very little attraction between one another.


HOW YOU CAN ROUGHLY REMEBER THIS :
solid(preppy kid)- obeying to parents (high intermoleular force),neat(regular pattern) child,creates almost no trouble(occupies as little space as possible)

liquid(average kid)-obeying to parents,but more subjective on what to obey (have intermolecular forces),not very neat (no regular pattern)

gas (wild child)- out of control ( little intermolecular force),creates a lot of trouble ( occupies a lot of space),very messy (random arrangements)

FINALLY WE'RE DONE WITH THEORYYYYYZXZXZ!VIDEO TIME!

the molecule song!dont worry,theres no weird freaky girl singing here,the songs quite catchy in a GUDD WAY!

molecules in solid cartoon

molecules in liquid