# Solids, Liquids and Gases

What you need to know for Soilds, liquids and gas section

- Created by: Penruddocke
- Created on: 06-02-14 22:23

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- Solids, Liquids and Gases
- Density in regular Objects
- Volume is calculated using Depth x Width x Height
- Density= Mass/Volume
- Units are either kg/m3 or g/cm3

- Density for irregular Objects
- Calculating volume for density: Measure out two cylinders and drop the object in one and the difference is the volume.
- Equation is the same for density of a regular object.

- Pressure in Solids
- Pressure= Force (Newtons) divided by Area ( in square meters
- P= F/A

- Pressure in Gases
- Three Ways to increase pressure in Gas:
- Heat It- There particles have more energy so it hits the wall with a bigger force.
- Squash it: The particles are being squashed togteher
- Adding more Gas

- Due to the particles hitting the wall it exerts a force over and area which is pressure,

- Three Ways to increase pressure in Gas:
- Pressure in Fluids
- Boyles's Law
- Equation: Pressure 1 x Volume 1 = pressure 2 x Volume 2

- The Pressure Law
- Pressure 1 / Temp 1 = Pressure 1/ temp 1
- Always convert temperature to Kelvin adding 273
- Summarize: With a fixed mass of gas at a constant volume, pressure is proportional to temperature (in Kelvins).

- States of Matter
- Solids: Particles are closely packed, Regular structure and Vibrate about fixed positions
- Liquids: Particles are closely packed, Irregular structure and Random motion within structure.
- Gases:No fixed position, Move at rapid random motion and are very spread out

- Density in regular Objects

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