Sg Chemistry 2 Blog of week 11/2/15

Sg Chemistry Blog of Week 11/2/15

Obi Ilozor

This week in Sg Chemistry 2, we took a test on unit 6 and we also started a lab. This lab, which involved nails in copper chloride, was to show how chemical reactions appear and how we know when they take place. Things such as temperature change, phase change, and color change can show us if a chemical reaction has occurred. We haven't completed the lab yet but we discussed some predictions about what could happen. Mainly, this week was pretty much a time to prepare for the test, and taking the test. Our lab only occurred on the last day of the week.

The test was pretty challenging. It was definitely the most challenging test we have had in this class. I hope I did well but I can never truly predict any of my test scores. The test consists of naming ionic, molecular, and polyionic compounds. It also consisted of examples from the first lab we did. It was the sticky tape lab and it showed diagrams of electrons. Unfortunately, I do not have pictures of the test or its examples. It also consisted of multiple choice about JJ Thompson and his cathode ray experiments. We also had to find how many ions are in a compound and how many atoms are in a compound. That pretty much summed up the test and the week. 

The next thing that happened in class was a lab we did on friday. It was a three day lab and we submereged nails in a copper chloride solution. We will further examine what changes happened on monday. We discussed what might happen before we started the lab. We said that there could be temperature changes, color changes, and even phase changes. Unfortunately there are no pictures of the reaction and its result but that will be included in next weeks blog. 

In conclusion, this week wasn't as informational as other weeks. It was just a test and one lab. Hopefully I did well on the assessment.