11) Four phases of matter are:
a) Intermolecular Force (IMF) - force that holds one particle near another particle
Anytime you have a physical change is because the base particle is exerting force on another particle
b) Solid: def:
Shape:
Particles spacing:
Energy: ___ not compressible___ (can overcome IMF or not)
Liquid: they have enough energy to move into 3D space. IMF doesn’t allow particles to move anywhere separately.
Shape: occupies shape of container
Particle spacing: close together but not compact
Energy _not compressible_(can overcome IMF)
Condensed phase is name people give to either solid or liquid phase
Gas def: obtain energy to overcome molecular forces Shape: can take any shape Particle spacing: occupies all volumes, very far apart Energy __compressible__(can overcome IMF)
If you significantly more energy to gas particles, then you get Plasma: It is a form of matter that floats around freely Energy is needed to from one phase to another. Energy is used to change how particles relate to each other and not give energy equally to all particle (called increase temperature).
Notes from Observation of a Chemical Reaction.
What are the four observation that a chemical reaction occurred. A permanent color change - indicates a chemical reaction Gas is generated. Gas can have an odor or not - it forms bubbles and the bubbles contain the gas that have a “skin”, which is water Energy change Precipitation formed - solid that is forming in a solution
Can any of these observations be also an observation of a physical change/process. Explain.
No because they have different properties. The physical properties of a particle says that the base units do not change, making the observations different.