Molecular mass reflection

Today I reviewed about molecular mass. Molecular mass is the sum of atomic masses in elements, to predict the mass of the compound. To find the molecular mass, first I had to find the atomic mass of the element first and that is by looking at the periodic table.The unit used in molecular mass is grams/ mole.

Example:

Chemistry Reflection, Ar and Mr

Relative Atomic Mass (Ar):
It is the average mass of an atom in an element. For example: Na=23g/mol

Relative Molecular Mass (Mr):
It is the sum of masses of elements present in a compound. The relative molecular mass can be used to predict the mass of the product of certain elements.

Ex: CO2
C=12 x 1= 12
O=16 x 2= 32
 32+12=44 g/mol

SO4
S=32 x 1= 32
O=16 x 4=64
64+32=96 g/mol

H20
H= 1 x 2=2
O=16 x 1=16
16 +2= 18 g/mol

Reflection #3

L.O: Deducing the chemical formula of a compound from the relative number of atoms present.

I learned how to identify the number of atoms in a compound. I learned how to identify elements that is present in a compound.

Example:

Reflection about Naming Ionic Compounds

Ionic Compounds

I learned about naming ionic compounds ionic compounds are elements that are metal+nonmetal. Ionic compounds doesn't need any prefix, in naming ionic compounds I also learned the molecular formula of the ionic compounds, I learned that the elements have charge, and that the charge can be written in the result. I learned that the charges switch during the ionic compound.

For example:

Metal+ Nonmetal

Magnesium + Oxygen= Magnesium Oxide

Mg + O= MgO

Chemistry Learning ABOUT ME

Goals for Chemistry this year? How do I plan to achieve them?

My goal for chemistry this year is to get an average grade of 9.3 +  in the report. My goal is to achieve 100 in quizzes and to be able to understand every single topic. I plan to achieve my goals by studying a lot, reviewing of what I learned, so I my understanding about the topic will get better and better, and also to do my best in doing experiment and projects, I plan to achieve them also by using my time wisely, make sure I submit the HWs or projects at least one day before the due date, so I won’t stress out. I also plan to achieve them by asking questions about the topic to the teacher, in case I didn’t understand it that well yet.

Strength and Weaknesses?

My strength is when I’m being taught orally, I can get a lot of information by being taught orally and by having notes. I have strength in studying for quizzes, because I asked questions to the teacher, if I don’t understand the topic. I have weaknesses in doing experiments, because I don’t trust myself doing it, sometimes I’m just scared that I would messed up, because I don’t actually feel like I can do the experiment, during the past few years I also encounter this problem, because I’m afraid I’ll mess up and I get stressed up if I can’t do the experiment correctly.

Things I would like to do more in class?

I would like to do more oral reviewing in class, as it helps me to understand well,  I’m used to understand oral reviews well, but experiments I don’t think so, I don’t fancy experiments sometimes.

How can the teacher help to improve my learning experience?

Well, experiments sometimes, as I can understand the topic also when it was being showed, it’s just that sometimes I felt left off when doing the experiments, like I don’t understand the full topic sometimes, I’d like to be help by making explanation better to me, so I can understand more in class.