ibchemist

[ibchemist]

Reason of my abscence

I'm going to be honest. I've been heavily depressed since february, and spiraling down. I've already taken actions such as beginning medication and therapy, yet I'm still in the process of becoming better. I'm sorry and good luck with your studies.

[ibchemist]

Things I would have wanted to know before starting the IB

Lovelies! I'm back. Hi. For the ones that are new or simply don't know me, my name is Paula and I'm currently on the summer vacations before senior year. One year ago I was very excited about the IB, which made me numb and have fake expectations... so, here are some things I (me, only me) would had wanted to know.

It's all a matter of discipline and choosing things you enjoy: the IB is hard, it will always be hard BUT, it can be enjoyable if you actually pick classes that you like. Example, I chose Glopol because i'm a MUN kid and I FUCKING HATE IT. Even if i'm getting good grades, just entering the class is a struggle. Instead, Biology and Chem are my babes. They are soooo hard but I actually enjoy studying them and that makes me more disciplined.

CAS/TOK CAN BE AN EASY SEVEN IF YOU WORK FOR IT. And that's a fact. I've had 7 on the three trimesters of TOK and CAS just because I've put effort in my things. Then it's an easy boost for my average.

More than one science at a time is hard, but it is possible. I'm taking both Bio and Chem in HL and everyone told me I was going to die; but i'm still here so... it's just a matter of truly liking it and doing your work. Plus, biology is a matter of studying a lot and for ME, writing your notes a thousands time.

MEGA STUDY TIP, USE YOUR PARENTS. I've always struggled memorizing but since I started "teaching" my parents what i've learned, i've learned and memorized way faster. Thanks mom, thanks dad!

Don't go into Math AA if you don't like math. It's so obvious but I regret my pick everyday... please don't do AA for ego like me.

4 or below is normal, don't cry yourself for it. If you pick a hard course you're going to have a hard time in some topics. That's normal, so instead of punishing for it prepare for the next and be better <3

It's not much, I just wanted to reflect some more, so thank you guys for being that comfy space <3

[ibchemist]

[ibchemist]

Dreams don't work until you do.

[ibchemist]

hey guys! so, things to do today 🌺

finish the historical context for that MUN guide

past papers in chemistry

revise math (quadratic functions)

[ibchemist]

Sharing my schedule for next week with you! I have to study this much because I have 6 exams when I come back (4 on chemistry...) so wish me luck!

[ibchemist]

Spring Break Study Plan

March 24th Watch the glopol documentaries Finish copying the Spanish analysis

March 25th Finish planning the English Paper 2 Continue the guide for my friend's MUN (introduction to topic, and historical context)

March 26th Continue the guide for my friend (the rest of things) Begin the engagement activity

March 27th Finish the MUN guide

[ibchemist]

I’m so mad that a t4 bacteriophage actually looks like that and that it’s appearance isn’t made up

[ibchemist]

Remember

BIOLOGY 1A PAPER ON FRIDAY

[ibchemist]

this week's schedule 🐚💨

wednesday 🥝

review for global politics

review for biology

upload my Spanish works for the folder ⭕️

finish English IO

thursday 🍓

review for biology

review English IO

friday 🥭

write tok essay

[ibchemist]

things on my mind

study organic chemistry

biology, viruses

presentation global politics

IO english

[ibchemist]

things on my mind

write a script for a video of my MUN (done)

write my TOK essay (done)

print my notes for the open notebook glopol exam

finish my imath (done)

assign delegates for the MUN (done)

Spanish presentation (done)

[ibchemist]

Monday february 19

so today im feeling so bad that im going to rant. I did a mock test for the national exam and i was the only one that never received the result. Today my chem teacher aka my father came and asked me if I'm okay, if my house if stable etc and i was like yeah why. And he told me that I FAILED THE EXAM. I was like wtf, and asked to see the results and i got 11% on bio and 33% on chem. Such results are absolutely incoherent because i have 7 in both classes which i take in HL.

I went and asked my bio teacher what the hell was going on and she told me that she didn't put the grade up (because these results are the 15% of final grades) because there was no way that I failed everything when I got a 7 in all my classes. So now, I had to write an email asking for a re-evaluation because if this is not a mistake, then i'm failing ALL MY CLASSES for this trimester.

I'm overwhelmed, I want to disappear and yet i can't. I just need this to be a mistake.

🎧 - not strong enough by boygenius

THINGS I NEED TO DO FOR THIS WEEK

monday -TOK essay -chem internal -study for bio

TUESDAY - chem internal - finish spanish l drive folder - meeting at 6.30 -study for bio

WEDNESDAY -prepare glopol exam

THURSDAY -prepare for MUN

[ibchemist]

he's so me

Vladimir Nabokov, Letters to Véra

[ibchemist]

it pisses me how i will always be inferior to that guy in the eyes of my chem professor (I LITERALLY HAVE BETTER GRADES THAN HIM)

[ibchemist]

Sorry for breaking under the pressure of studies and crying. That wasn't very overachieving-model-student of me.

[ibchemist]

Notes for Metallic Bonding

METALLIC BONDING AND STRUCTURE

Delocalised electrons - electrons that are not associated with one specific atom and are free to move within the molecule structure

Metallic bond - the electrostatic attraction between a lattice of cataions and a sea of delocalised electrons.

In metals, state which electrons are the delocalised electrons present between positive ions in the lattice = valence electrons

Mg(s) has metallic bonding in the interaction between positive metal ions and delocalised valence electrons in a three-dimesional lattice structure. The metal itself is neutral and is made up of many, many atoms.

Identify the ways in which solid metals are similar to solid ionic and covalent network substances:

I. Lattice structures II. Non-directional bonding III. Electrostatic attractions between positive and negative species

Solid metals, ionic compounds and network covalent solids form three-dimensional lattices. In all three types of bonding there is an electrostatic attraction between positively and negatively charged species. Metallic – between cations and delocalised electrons, ionic – between cations and anions, covalent – between positive nuclei and shared electron pair.

PHYSICAL PROPERTIES AND APPLICATION OF METALS

Lustre (shiny appearance)

Delocalised electrons in a metal lattice interact with visible light. When visible light hits the surface of a metal, the electrons absorb some of that energy and vibrate. This vibration generates a second wave of light, which radiates from the surface.

Sonority (sound when struck)

When a metal surface is struck, the free electrons in the metallic lattice can move easily, propagating the incoming sound energy easily throughout the material.

Malleability (can be reshaped on compression) & Ductility (can be drawn out into a wire)

When stress is applied (for example, by bending, hitting with a hard object or pulling), layers within the lattice shift in response to that stress. As these layers shift, the cations in the lattice remain surrounded by delocalised valence electrons, meaning the metallic bonding also remains unaffected.

Electrical conductivity

The delocalised valence electrons can move throughout the metallic lattice. When a potential energy difference is applied to the metal, the delocalised electrons are repelled by the negative terminal and attracted to the positive terminal. This is why metals can conduct electricity in their solid state and why metals are used for electrical wires and cables.

Thermal conductivity

Thermal conductivity in metals is a result of the free electrons in the lattice.

STRENGTH OF THE METALLIC BOND

Strength of the metallic bond

The smaller the radius of the metal ion, the stronger the metallic bond. This is because of the shorter distance between the positive nucleus of the cation and the surrounding delocalised electrons. Dictionary

Charge of the metal ion

The higher the ionic charge, the stronger the metallic bond. This is because:

greater charge on the metal ion

greater number of delocalised valence electrons

The greater the ionic charge and the smaller the ionic radius, the stronger the metallic bond. The stronger the metallic bond, the higher the melting point.

TRANSITION METALS

As there are a large number of valence electrons from both the s and d orbitals, this results in a greater electron density within the metallic lattice. This increased electron density in turn increases the strength of the metallic bond.

Hardness

valence electrons (delocalised) increase attraction and increase metallic bond which results in greater hardness

Electrical Conductivity

Transition elements are electrically conductive. These metals form their metallic bonds through the delocalisation of electrons in unfilled d orbitals. The electrostatic attraction between metal ions in the lattice and delocalised electrons increases with an increasing number of electrons in d orbitals.

In comparison to s block metals, the melting point and electrical conductivity of transition metals are HIGHER and HIGHER