GASSES

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GASSES by Mind Map: GASSES

1. P Total = P gas 1 + P gas 2 + P gas 3 .

2. Laws

2.1. R1/r1= √M1/M2

3. Characteristics

3.1. Diffusion

3.2. Effusion

3.3. Low density

3.4. Compressibility

3.5. Expansion

4. Pressure

4.1. Gas pressure is the force that the gas particles exert when they collide with the walls of a container.

4.2. Atmospheric pressure

4.2.1. the atmospheric gases move and collide with us in all directions generating tremendous pressure.

4.2.2. Low at high altitudes, high at low altitudes

5. Experiments

5.1. Berti

5.1.1. He conducted a simple experiment to to try an explain why no one could pump water from wells and rivers higher than about 10 meters

5.1.1.1. He didn’t prove the effects of air pressure but he succeeded in creating a stable vacuum

5.2. Torricelli

5.2.1. focused his attention on the water level instead of the empty vacuum created inside the tube

5.2.2. Torricelli believed that the only thing preventing the water from dropping into the basin was the air pressure. He realized the experiment acted as a balance between the air pressure pushing down on the water surface outside the tube and the pressure of the water column pushing down inside the tube.

6. Instruments

6.1. Barometer

6.1.1. used for measuring atmospheric pressure.

6.2. Manometer

6.2.1. used to measure gas pressure in a closed container.