Chemistry- Something New!!

Hi there!!

So, you’re probably wondering- what’s new about chemistry??

Nothing. Absolutely nothing. Chemistry is still chemistry, don’t worry about that… but there’s something new that I’m doing!!

You know this blog’s posting content, right? It’s a bio series, then a physics post, followed by a chem post, and then right back into bio.

However, this time, I’m starting something completely different- a chemistry series!! Thank you to @Eliza for this wonderful idea.

*throws confetti everywhere*

Let’s get started!

I’m sure we’ve all come across the Periodic Table before. It was created by a Russian chemist, Dmitri Mendeleev. The February of 1869 would prove to be an eventful month- Dmitri was trying to organize all discovered elements, and that’s when he invented this table. It’s still in use, even centuries later!!

As you can tell, the table is just a way of organizing all the elements we’ve discovered. However, there’s a special arrangement and placing- the elements aren’t just scattered without any pattern. You can understand so much about an element by it’s placing… These patterns are what we’ll be discussing in this chem series!!

Atomic Mass and Number->

Before we delve into the entire table itself, we need to understand all the little numbers and symbols that reside within each individual cell.

As you can see in the above photo, the number on top is Atomic Number, the number below is Atomic Mass, and the letters in between are the element symbol. Symbol I’m sure we can all understand- what of mass and number?

Atomic Mass is also called the nucleon number. Now you’re like, “Wow, that helps so much. Thanks for further confusing me.”

Well… I’m sure we’ve all seen the structure of an atom, right? You know how the electrons whizz around, but the protons and neutrons just sorta clump together to form a nucleus? Nucleon number is basically how many protons and neutrons lie within the nucleus. If there’s say, 2 protons and 2 neutrons [just an example], then the Atomic Mass is 4. Atomic Mass only differs in isotopes!! [More on this later…]

Atomic Number is far easier. It’s just the proton number. Proton number is, as you can guess, the number of protons that the atom possesses. If the atom is, for example, lithium, it’ll have an Atomic Number of 3, meaning there’s 3 protons.

The numbers 7 and 2 are the electron arrangement. You can ignore that, or check out more about it in my other chemistry post.

Periods and Columns->

Periods are the rows, but, for reasons unknown, they’re called periods. I don’t know why. Jog with the blog, all right? [Winks like a psycho].


Wait, you guys. I was wrong. Sorry for the mess up…😳 The periods are called periods because their chemical properties repeat periodically. Thank you VERY much to Gregory Dennison@Don’t Let The Days Go By for informing me about this! Always a good day to learn something new. For further details, read his lovely comment below!!

Columns are… well, groups. Group 1, Group 2, Group 7… You get it. But there’s alot that you can glean about an element based upon which period or column it’s in. If it’s, say, in the 2nd period and 1st group, then you know that it has 2 shells and 1 valence electron.

Now, I’m sure that that sounded like a bunch of gibberish. Breathe easy, I’m gonna explain.

Let’s look at this atom. This, my friends, is a lithium atom. It’s in the 2nd period, 1st column. Now, since it’s in the second period, it’s gonna have two shells. And the valence is one, since it’s in the first column [valence is the number of electrons in the outermost shell.]

Here, look at this magnesium atom:

Can you guess the column and period it belongs to??

That’s it for today!! I know, today was a slightly text-heavy post. Sorry, there was ALOT to explain… Lemme know your guess regarding the above question in the comment section!!


love always,

Published by peanutbuttersandwiches_

PariS/Peanut/pbs/raven/SG/gotw (yeah lotta names... pick one and jog with the blog): - Fangirl Supreme™ - Chocolate, book and travel addict :)))) - Could get paid to eat. No jokes. - Part time job as the grammar and science fact police... - Erudite, Ravenpuff and Taurean. - Science nerd, blogger and occasional poet. - Loves M&Ms, memes and monkey bars. - Indian teenager. - Slightly insane, but that's okay. Amirite? - NGOist: - A little too sarcastic, laughs alot, will quote Vines, memes and songs at you all the time. (∩`-´)⊃━☆゚.*・。゚ Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less. ~Marie Curie

Join the Conversation


  1. Interesting post! Mg belongs to group 2 and period 3. I had to learn all this the past two years and have it this year too😂
    I think you did a wonderful job explaining all the parts! Maybe you could mention a bit about the Periodic Table’s history as well.💕

    Liked by 3 people

  2. Magnesium is period 3, column 2.

    They are called periods because the patterns repeat periodically. Before the structure of the atom was known, the valence could be calculated by what kinds of bonds the atom formed and in what ratios with other elements. It was noticed that every period started with an element with valence +1, then +2, then there were others in between, then there would be something with valence -2, then -1, then a noble gas. I am greatly oversimplifying this, because I didn’t study chemistry beyond first-year general chemistry at UJ 25 years ago, and things got more complicated with the heavier elements because of the transition metals and the lanthanides (and actinides, but most of those were unknown in Mendeleev’s time). But that’s the idea, they were called periods because their chemical properties repeated periodically.

    I knew a guy in my freshman dorm at UJ who was a competitive Scrabble player. He made up a game once to think of a word that could be spelled with the symbols of chemical elements, and you add up the atomic numbers to find the score. So words with letter combinations like U and Es and No scored really high. I forget what the highest score we came up with was.

    Liked by 3 people

    1. oh, WOW. b l o w n.
      thank you SO much for this new bit of info!! i’ll just add it to the post IMMEDIATELY!!
      ooooh, that’s a cool game!! maybe we can play it in Chemistry at our school (:
      Greg, thank you VERY much for this lovely comment. it was such a pleasure to read!!

      Liked by 2 people

      1. You’re welcome! I would have written more about that game in my blog when I was writing about that year, except I didn’t remember what our winning word was, and I was too busy to try to think of it all over again. It really isn’t a big part of my story, though.

        Liked by 2 people

  3. Hey
    I came to read your blog… and guess what I see???
    And I learnt something new! One day I would like to reread all your posts… Re your history comment, maybe do it on another blog and keep this blog just for science. My reasoning for that is that something that’s everything attracts people who like most. Something niche keeps those who are there and then attracts anyone interested in science. People interested only in science could leave when it’s not just that. And I think you’ve got something awesometastic here. Just my unasked for thoughts about where you want this blog to head – you may want it to be about more remember. And you may not.
    Sending love…


    1. hmmm, makes sense. i don’t really have another blog as such though… so, yeah. i was just thinking of starting something like a biweekly update on my actual life… but, i don’t know. it’s a half-baked idea. thank you for the advise, though!! i’ll keep it in mind. it’s very kind of you.


  4. Hi
    So first of all, lit explanations!
    Also, columns are well groups 😂
    and the number of electrons in the last shell is valence electrons-cause valency is the number of electrons it needs to gain or lose to get a stable outer shell…
    but awesome post all the same

    Liked by 1 person

  5. Awesome post! As someone who didn’t get to go to college but always wanted to, I love reading about this stuff even though I’m easily confused. You made it all so clear. You made a comment about something being in 2nd Period and first row… but you also said that rows and Periods are the same so I’m confused. Typo? I read things over several times to make them make sense to me, but this one just isn’t… Anyway, I plan on reading over your previous posts as I really like the way you explain complicated things!

    Liked by 1 person

      1. No worries and no apology needed. I’ll help keep you honest, LOL. Since I am literally starting out with a grade school knowledge of science, I will see any typos and inconsistencies like they have a big, flashing light over them. If I get confused, it’s nice to know I can ask about it and you’re cool with that. I got yelled at in school a lot for not understanding what was obvious to others… they thought I was being a smart@$$, so I appreciate your sharing your knowledge and your patience.


  6. This was great! Loved how you asked a question in the end 😁 This was a nice start for a chemistry series! *imagines all the directions this could diverge into🤗*

    One problem I always have is with remembering each element’s mass 😅😂🙄


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