Jessica,+Courtney,+Katie

Pressure tester
What data did your group record? Include temperature and pressure values using correct SI units

The particles in the hot water move a lot faster than in the cold. The cold water was 5 degrees celcius and the hot water was 42.5 degrees celcius. The pressure in the cold water was 97.8, in the hot water it was 109.4, and control was 98.0.

What observations did your group make? What did the bottle look like and feel like?

The bottle was hard and filled with air while in the hot water. It felt almost like if we held it in there for to long it would explode! Once we took it and put it in the ice water, it felt more squishy and almost seemed to deflate. There wasn't as much air in it.

What conclusions can your group make? Please explain why the bottle did what it did in the two different baths. We concluded that the hot water made the bottle fill up with air because there was a lot of pressure. Then the bottle deflated because cold water has a low pressure.

The leaky can

What data did your group record? Include temperature and relative humidity values using correct SI units

without anything: temperature outside: 23.2 c temperature inside: 23.6 c humidity: 60.28% After: temperature inside: 2.7 c temperature outside: 22.8 c humidity: 69.92%
What observations did your group make? What did the metal can look like and feel like both before and after?

Before the experiment the can was silver, shiny, and dry. After the experiment it was the same, but wet; due to condension. It had clear water droplets on the outside of it. Before the experiment the can was black on the inside and the bottom and was silver metallic all on the outside and dry. After our experiment, the can had become covered in water droplets known as condensation which is the cause of the energy and speed of water particles in the air slowing down, therefore making the temperature go down, leaving the former gas in the air into a liquid on the can.
 * Before the experiement the can was silver, dry, shiny, with black on the inside, but the can was soon covered with clear water droplets.It was still silver and shiny though. **

What conclusions can your group make? Please explain why the metal can did what it did. Please be very descriptive in your explanation.

The can ended up with water on it because of condensation. The water on the can did not ended up colored because the water vapor is taken from the air, not the liquid inside of the cup. The water from the outside of the can was not colored, unlike that of the water that was inside of the can, because the condensation formed onto the can was not from the water on the inside of the can, but was from the particles in the air slowing down forming a liquid.
 * The can had droplets because of a process called condension, and not because the can was "sweating" because the droplets were clear, but the water on the inside of the can was colored. The droplets formed on the outside of the can from water in the air. **