Beanium Lab

     Earlier in the week, our class collected data for the Beanium Lab. Before we started the lab, we had to answer a prelab question, but luckily we chose the freebie. First we had to count the amount of each of the 4 isotopes of beanium. We then calculated the average mass of the isotopes using the number of atoms and total mass of the different isotopes.

Our group's data table

     Applying the data, we calculated the atomic mass of our beanium sample, and answered 5 reflection questions.

Answering the Conclusion Questions                                              Calculating the Atomic Mass

Find Someone Who Worksheet

     Today, after notes, our class was given a worksheet that contained a list of concepts. We were supposed to find ten people who could explain the concepts to you. I discovered that I should study Dalton's 5 postulates, because it was difficult trying to explain the reasons whether the postulates are valid or not.

Initial Thoughts on Atomic Structure

     Wednesday was the first day of notes on Atomic Structure. We discussed the early atomic models of Dalton, Rutherford, and Thompson. After notes, we did an activity where we had to guess the interior of a circular container using only a ball that we could roll around. Me and my partner only got through 6 of the 12 stations, but we guesses 5 containers correctly.

Atomic Structure & Radioactivity Pretest Reflection

Earlier this week our pre-ap chemistry class took an atomic structure  and radioactivity pretest. I felt like i didn't know anything. The only thing I vaguely remembered was calculating atomic mass, which we learned in physical science. I am super excited to be learning about radioactivity this unit!

Acids

What are Acids?

      Acids are compounds that produce hydrogen ions when dissolved in water. Acids are composed of one or more hydrogen atoms bonded to a negatively charged nonmetal or polyatomic ion.

How do I name Acids?

     If the acid does not contain oxygen, you add the prefix "hydro-" and suffix "-ic" to the anion. If the acid does contain oxygen, you must look at the end of the anion. If the anion ends with "-ite", then replace the suffix with "-ous". If the suffix is "-ate", then use "-ic".

Type I & II Binary Compounds

What are Type I & II Binary Compounds?

     Type I & II binary compounds are compounds made of a metal (the cation) and a nonmetal (the anion). The cation is positively charged and the anion is negatively charged. The metal in a type I compound has a constant charge, and is usually found in one of the first two groups of the periodic table. The metal in a type II compound does does not have a constant charge, and is called a transition metal.

How do I name Type I & II Binary Compounds?

     To name a type I binary compound, you simply write the name of the metal present, then write the name of the nonmetal, replacing the ending with -ide.

Ex: CsF -> Cesium Fluoride; AlCl₃ -> Aluminum Chloride

     To name a type II binary compound, you go through the same process as you would with a type I binary compound, but you will add the charge of the cation in parentheses, using roman numerals, after the name of the metal.

Ex: CuCl -> Copper (I) Chloride; Fe₂O₃ -> Iron (III) Oxide