chem blog 2 strupp

I really liked all the labs we have done so far this unit. The air pressure ones were the straw activity with the kool aid and then the straw video. In this demonstration I learned how a straw works like I didn’t think it had anything to do with science I just thought it works because it just does.

 The mercury tube was cool too because of the vacuum that was created when the tube got tipped upside down into the pool of mercury I thought that would have been air but I thought it was pretty interesting that there was no particles of air or anything in the top of the tube.  

 
The Petri dish with water on the glass tank was interesting because I never thought that air particles cause enough pressure to keep the Petri dish up. Figuring out the units of air pressure was pretty easy because I remember how to do proportions. One thing I did do on my worksheet when I was converting Celsius to Kelvin I was trying to make it difficult by making a proportion when really all I had to do was ad 273 to the calcium number.

The garbage bag with straws was really interesting because a person is pretty heavy and to be able to lift them a few inches off the table by blowing air into a straw Is amazing. The last lab we did was learning the relationship between pressure and volume of a gas. I learned that it is an indirect relationship because as the volume goes up the pressure goes down.

 

 

 

 

From this unit so far I have learned a lot. Even though we don’t do a lot of homework or worksheets in class we still learn a lot from experiments. I like this way of learning because it is nice not to have to bring a big book home but still be able to feel like I learned something new every day. I also like how before the quiz we did a review summary sheet because I think it helped me just to pull back some of the things that might have been done a while ago. And I think it helped me to study because all I had to do was look back at that one sheet.