Chemistry Journal Entry 5

Atomic Structure

Guess what? There are even smaller things in atoms. Mainly there are three different parts in an atom. 

1. PROTONS

2. NEUTRONS 

3.ELECTRONS 

Protons carries one positive electric charge, a relative mass of 1, and with a  symbol P. Neutrons carries no electric charge, has a relative mass of 1 and symbol is N. Electrons carries one negative electric charge, has a relative mass of 1/1840 which is negligible but important. ( Symbol : e)

Masses of particles are determined by Atomic Mass Unit. ( amu) 

1 amu is 1.67 x 10 to the power of 27 kg 

WHICH IS REALLY REALLY SMALL. 

A cell is already so small, an atom is even smaller, it is really astounding.

Then we have the PROTON NUMBER and the NUCLEON NUMBER. 

Proton Number is basically the atomic number. It is usually found on the left below corner of a chemical symbol. 

The nucleon number is the total number of neutrons and protons in an atom. It is usually found on the left top corner of the chemical symbol. 

That's all! ;)

Chemistry Journal Entry 4

We actually started on a new topic, " Elements, Compounds, and Mixtures ". We learnt the differences between a metal and a non-metal and a metalloid.  

Differences between metal and nonmetal

1. A metal is shiny and lustrous while a non-metal is dull. 
2. A metal is a solid while a non-metal is usually a gas or a liquid. 
3. A metal is malleable, sonorous and ductile while non-metals are brittle( if it is a solid). 
4. Metals usually have a high melting and boiling points while non-metals usually have low melting and boiling points.
5. Metals are good conductors of heat and electricity while non-metals are the opposite. 

Metalloids usually exhibit both properties of a metal and a non-metal and therefore,they are called METALLOIDS. 

What you see here is a a Periodic Table of Elements. Guess what? There's one element named einsteinium which is named after Albert Einstein. So interesting! The Periodic Table is arranged according to increasing proton numbers from left to right. 

Chemistry Journal Entry 3

Today was a 2hr chemistry lab lesson. Hehe, I remembered to wear my safety goggles!!!! Basically, we played around with the bunsen burner. We had to close the air hole , attached the gas tube to the gas tap, and then used the lighter and light it. When you light it, it will be yellowish flame. Then, if you open the air hole, it will become a blue flame. My lab partner and I used the copper wires and tried to "barbecue" it and it turned like reddish-yellowish. The tip of the inner blue flame was the HOTTEST. I can't help, but be curious at how high the temperature is in that teeny weeny flame from a bunsen burner. Will you be able to supposedly cook things with it? I am not exactly sure, but its just a question that came out of nowhere. Is a bunsen burner's heat equivalent to a stove's ? Maybe, I guess. ;)

I adopted an element: Cadmium. My reason: It sounded very very cadbury-like, unfortunately, its cancer causing. 

Chemistry Journal Entry 2

So today, we actually got this worksheet where we had to classify different types of circles. We had dotted black and white circles. I think we were basically trying to mirror how the periodic table is constructed right? Instead of the colors, sizes, the periodic table shows from left to right the increasing number of protons, correct me if I am wrong;)

Then THE INTERESTING PART! We were supposed to guess other people's classification. It was relatively easy,  but some groups' classification was confusing. We weren't able to get what they were really trying to say. 

Chemistry Journal Entry 1

Laboratory Safety 

I personally think while we are in the chemistry labs, we really have to be careful on what we are handling. Every thing in the world actually poses a certain form of danger, especially in science labs when we could actually do experiments that sometimes , could even change history. Some rules are especially important. As seen in the video ( the funny one;D ), if you don't tie your hair up properly , you might actually burn your hair. If that happens, then we need run to get the fire blanket and wrap it around the person's head. Then , we have another important rule: to wear the safety goggles at  ALL TIMES. I am a real scaredy-cat when it comes to handling things like chemicals, and fire. You don't really worry about me, I will dutifully wear my safety goggles at all times. ;D