Pressure, Volume, Temperature, Number of moles!!

Another awesome day Honor chemistry 7th period!! oh yeah

Today we learned relationship between Pressure, Volume, Temperature, and Number of moles by looking at three formulas.

The first one was Boyles' Law

Therefore

As pressure increase volume decrease and when volume in crease pressure decrease.

a constant(k) stay same and pressure and volume are inversely proportional

The next formula was Charles' Law

As Temperature increase volume increase, so volume is directly proportional to temperature

o

B = a constant

Mr. Liebeman show a demo of this formula

He had two beakers and two balloons, and he heat one of them and put the other one into liquid nitrogen. As you can see in this picture the ballon on right side blowed up, because the temperature of air inside of ballon increase and it increase volume. On left side the ballon stuck inside of beaker, because this one was put in liquid nitrogen and cooled, so the air inside of beaker decrease volume.

The last formula was Avogadro's Law

a = a constant

Volume is directly proportional to the number of moles

Overall if we combined these formula to one formula

Whenever each one of value stay same we can cancel out

once again I really think 7th period Honors Chemistry is cooler than any other class haha

tonight's homework is Gas law sheet, and NEXT SCRIBE IS.......JOE R yeahhhh

Separation Mixtures Lab Day Two

Hey guys I'm little late. On Friday we had sub teacher, Mrs. Zalatimo, and we start separation Lab Part B. Each group hadfollowed their Procedure which was homework.

For this lab we were going to separate heterogeneous Mixture iron, sand, and salt. I measure each of masses and calculate percentage.

Most of groups used magnet to take out iron. Then, we mixed the mixture with water and used the filter paper to take out sand.

Then, most of the groups heat the filter paper to take out moist from sand. After that we could easily measure the mass of sand and subtracted each mass of iron and sand from total mass.

However, some of the group triedto boil the left liquid which is mixture of water and salt to find salt. I thought this was going to work and we can find the salt, but the water started explode and we couldnt get salt.

Our homework over the weekend is to answer the post lab questions from Separation Lab and pre lab question from What Chemical Reaction Lab.

Boiled salt

And next scribe is .......Faith S.