Chemical Reactions quiz

Today we had a chemical reactions quiz. It was over double replacement reactions. It wasn't too difficult, but there was one question in particular which I had trouble with. I knew how to do it, but the problem was that It took so long to do. Most of the quiz was easy it was just that one question that I thought was hard. Hopefully for the unit test I can prepare for questions like that and get them right.

Double replacement

Today was day 2 of the new lesson in chemistry. It is safe to say that I don't understand it that much. We have to memorize 11 solubility rules by Friday to do the lab and memorizing doesn't seem that fun. I understood part of the lesson but it sort of overwhelmed me at times. I hope that within the next couple of days I can comprehend the chapter.
These are some helpful links:
Study.com
Khan academy

Moles lab

In this lab we had to convert the measurements of either molecules, or mass to moles or vice versa. We used the conversion chart to do this.For both the quiz and the test we had to memorize this chart.

It wasn't hard doing that because we did a lot of practice. This lab was one of those practices and it helped me a lot.

Weekly Quiz

The quiz we took last week was fairly difficult. More than 95% of the test was math and that is why it was difficult. I couldn't tell if the answer I got was right or wrong.We had to convert from moles to mass or atoms and use those in problems to figure out number that should go in front of certain substances like water. We also had to use percent composition for it. There wasn't much but this topic was very important for the unit test since we would need to find the empirical and molecular formulas.

Chemistry Test

I am not sure of what to think about this test. It wasn't necessarily super hard but it also wasn't incredibly easy. The time that we were given didn't help since most of the questions were multi-step problems. Finding the empirical formula wasn't hard since I did the worksheets, it was just time consuming. At first I didn't understand empirical formula and how to find it, but chem.tamu.edu  helped me with it.


These links also helped me:
chemteam
Chemical Analysis
Empirical Practice
Chemistry Class
Molar Mass

Chlorine Lab

This week we had a chlorine lab in which we calculated the empirical formula of zinc chloride. We measured the mass of a zinc tablet and had it react with chlorine which made Hydrochloric acid. . It was a fun lab since it was my first lab and we got to make a new substance from two different substances.