Periodic table: A bit from Chemistry

-

Science is amazing! Chemistry is one of the core areas in science that talks about elements and compounds. When you say elements, periodic table comes into our minds first. Let me explain what is the periodic table and some amazing elements included in it. 

 

What is the periodic table? 

 

 

The periodic table is a chart consisting of 118 elements. It was created by well-known scientist, Dmitri Mendeleev. These elements make up almost every single thing around us as we know it. The elements are sorted into different groups. 

 

Categories of the table

 

There are 18 rows and 10 categories. The categories are;

• Alkali metals
• Alkaline - earth metals
• Transition metals
• Other metals
• Other non-metals 
• Halogens
• Noble gases
• Rare earth elements
• Lanthanoid elements
• And actinide elements

 

Now let’s look into 3 selected magical elements. The elements are plutonium, astatine and uranium.

 

First let’s check on plutonium. Plutonium is used in nuclear waste and products. Just like the other elements on this list it’s radioactive. It means that it emits energy that’s dangerous for our bodies. Plutonium can be used in nuclear power plants. It’s the 94th element on the table, and it’s colour is silver - white. It was discovered in 1940. It’s classification is metallic.

 

Next up, astatine. It’s the worlds’ rarest element. It’s lifespan it unimaginably short because the radiation that it causes is extreme. We don’t know much about this element. It’s places 85th on the table and it’s colour might be black. We’re still not so sure.

 

Last up, uranium. Uranium is another radioactive element. It’s also used in bombs and missiles. When it’s core splits up it starts a chain reaction and that’s how bombs work. It can generate energy. It’s classification is metallic and it’s colour is grey. It was discovered is 1789 and it’s ranked 92 on the table.

 

This is a short journey through the periodic table. I am stopping here with just three elements without making the article too long, but we have many more amazing elements and facts to explore. I hope you enjoyed this reading!!




Comments

Post a Comment

The most popular posts

About me and my family

-
Image
My name is Theertha and I am 8 years old. My little brother’s name is Chris and he is 3 months old. My favourite board games are scrabble (original) monopoly and snakes and ladders. I live in Craigieburn Australia and I live with my aunty, my dad, my mum, my little brother, (as previously mentioned) and my grandma. Sometimes my aunty comes to our house. I was born in Sri Lanka. It is a tiny island near India which had the same population as Australia. It is one of the smallest countries in the world. It was quite crowded in the tiny little country. My favourite foods are Domino’s oven baked chips and my mum’s cooking. When I grow up I want to have a part time job of being a blogger and I will have a trillion degrees. I also want to be the world’s richest person. I love to play with my little brother a lot. I like school I am in grade 3 & my favourite colour is golden. If you want to read about my trip to Great ocean a road then tap this link.
Read more

Human body cells

-
Image
Hello, my blog viewers. Today we are going to learn about the tiny building blocks that make up us and other animals. Can you guess what it is? It’s cells! The cell is made out of different parts.  Let’s look at them now.  If you were shrunk to a  size that lets you fit through the cell and you found one, the first thing you would see is the cells outer shell. We call it the cell membrane. The cell membrane only lets specific things in. If you could somehow get in, you would see the different parts of the cell.  The different parts of the cell are called organelles. The organelles that you would see are the Nucleus, some Mitochondria, the Endoplasmic reticulum, some Lysosomes and the Golgi apparatus, but when you walk you will realise that there is one more part, and it is the most important. It’s the Cytoplasm! It provides a surface for the organelles to live on. Let’s learn more about the organelles.  The Nucleus decides and controls most of the functions going on in the cell
Read more

Black holes | Why are they so important? |

-
Image
  Black holes are one of the marvels in the universe. There are so many of them and we barely know anything about them. In this article I’ll tell you about them.  If you don’t know what a black hole is black holes are  things that can suck up planets or even stars! There are different types. Supermassive, spinning or maybe just a normal one. Structure A black holes structure is quite unique. There are spinning black holes and non spinning black holes. There are also supermassive black holes. In normal black holes there is a disc around it called an accretion disc. Near that we have the event horizon. In the middle there is a single point with an infinitely small length but contains the entire mass of the black hole. For spinning black holes there’s a accretion disc and also an ergo sphere. An ergo sphere is the place where time is half broken but in the event horizon time is completely broken. For spinning black holes you can create a black hole bomb. But I’ll tell you about that anoth
Read more