MCB124lecture3

MCB124lecture3 - Consider the Structure of Solids, Liquids...

Info iconThis preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
MCB 124 Consider the Structure of Solids, Liquids and Gases How do we define the different “states” of matter and the differences between them?
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
MCB 124 Gases in the gas state, the particles have complete freedom from each other the particles are constantly flying around, bumping into each other and the container in the gas state, there is a lot of empty space between the particles as there is a lot of empty space, the particles can be squeezed closer together – therefore gases are compressible as the particles are not held in close contact and are moving freely, gases expand to fill and take the shape of their container, and will flow T Nk pV B = Ideal Gas Law
Background image of page 2
MCB 124 Liquids the particles in a liquid are closely packed, but they have some ability to move around the close packing results in liquids being incompressible but the ability of the particles to move allows liquids to take the shape of their container and to flow – however they don’t have enough freedom to escape and expand to fill the container
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
MCB 124 Solids the particles in a solid are packed close together and are fixed in position (though they are vibrating) the close packing of the particles results in solids being incompressible the inability of the particles to move around results in solids retaining their shape and volume when placed in a new container; and prevents the particles from flowing Glass is amorphous. It can be defined as both, an amorphous solid or a highly viscous (slow flowing) liquid
Background image of page 4
MCB 124 Changing between Phases as you heat a solid, its temperature increases until it reaches the melting point once the solid starts to melt, the temperature remains the same until it all turns to a liquid all the energy from the heat source is being used to overcome the attractive forces in the solid that hold them in place as you heat a liquid, its temperature increases until it reaches the boiling point once the liquid starts to boil, the temperature remains the same until it all turns to a gas all the energy from the heat source is being used to overcome the attractive forces in the liquid
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
MCB 124 Energy and Stability of Solids Supply energy to the atoms in a solid for them to overcome the potential energy well and “melt” into a liquid
Background image of page 6
MCB 124 Potential Energy Curves Indicate Level of Stability ground pivot rod M M pivot rod PE r PE r g Unstable Equilibrium Stable Equilibrium
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 28

MCB124lecture3 - Consider the Structure of Solids, Liquids...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online