Essay on history of the periodic table

Anthony Lavoisier was the first person to make good use of the balance. He was an excellent experimenter. After a visit with Priestly in 1774, he began careful study of the burning process. He proposed the Combustion Theory which was based on sound mass measurements.This combustion allowed him to find out special elements.Lavoisier was wrong to know charcoal as an element.This is because as charcoal consists on average of only 85-98% carbon, an element is defined as a pure substance.Therefore this doesn’t make consider charcoal as an element.

Then in the year 1869 the periodic table was published by a man named Dmitriv Mendeleev.Also,this table started from the bottom with just one element starting at a time.The first person to realise that elements were similar to each other was a German chemist called Johann Dobereiner.He tried a lot of different elements and decided to group them.

John Newlands was an English chemist which found out how to organise and put the elements in their right places.He ended up organising them in eights.He arranged all the elements known at the time into a table in order of relative atomic mass. When he did this, he found that each element was similar to the element eight places further on. For example,he started at Li, Be is the second element, B is the third and Na is the eighth element.This is how he organised and placed them onto the periodic table.

The thing that was missing from Dmitriv Mendeleev’s periodic table was that he did not have the use of atomic number to order the elements.Using atomic number instead of atomic mass as the organising principle was first proposed by the British chemist Henry Moseley in 1913, and it solved anomalies like this one.These are how the periodic table in the present is organised. 1.)The chemical elements are arranged in order of increasing atomic number.2.)The rows are called periods and the columns are called groups.3.)Elements with similar chemical properties are in the same group of elements.

Conservation of mass

The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

https://www.boundless.com/chemistry/textbooks/boundless-chemistry-textbook/atoms-molecules-and-ions-2/history-of-atomic-structure-32/the-law-of-conservation-of-mass-194-3698/

Is it sometimes right to prevent scientific inventions?

In this debate I am talking about the positives and negatives of the statement,’Is it sometimes right to prevent scientific development and discovery?’ This will show my personal thoughts and opinions in which I would talk about agreeing and/or disagreeing with the statement.

Firstly,in my opinion I would say it is right to prevent this because if experiments are not done properly then there would be high cause of damages which can cause danger for anyone around the experiment being tested.Also,if we prevent this there will be no arguments about liking or disliking someone’s ideas.For example,a man called Doctor Stubbins Ffirth tried to find how people may catch the yellow fever disease.But this is an example of a failed experiment because it did not go how he expected it to.Adding onto this,if we carry on allowing people to be trying new experiments and it doesn’t go right many anonymous people won’t like it.Therefore,this will be causing people wanting to destroy the environment they live in so it causes the other people to stop trying out new experiments.

A reason why people may want to destroy the environment around them is not because of the experiments that some people are doing.Some of the reasons for this would be because it annoys them that their resources are being wasted on ‘experiments’ that the people that experiment things try and try again and if it carries on failing what are we losing? The experimenters probably don’t see or understand how much we are wasting on useless things.Therefore this would make the people that don’t want them to carry on experimenting protest over the streets to cause them to stop also causing damage around the environment they live around.

Another point to talk about would be why people do not just leave things how they were.For example,electricity was made by power first.But people just had to find ways to get electricity more easier to make by wasting materials from our land when we could have just left how to make electricity simple.

What annoys me and many more people is that they try many times like we have unlimited supplies of the resources they are experimenting with.Everything in this world has a limit we just have to get it into people’s heads so then they will finally realize how effective their ‘ideas’ and experiments do to the world and environment around us.

On the other hand,many people say we don’t look at the positives of experiments that have been used in the past to make cars,phones etc.This is a good example to stop preventing scientific experiments because many more things could be getting ready for producing.If people did not invent cars etc we would not have transport apart from walking and a lot of people will not enjoy that.This is a good example for a scientific invention.

Another point to back this side of the argument is how scientific inventions could affect our future as young learners.For example,this could help or bring down our revision and may help our exam or test results improve.But who knows what the future brings.

Who knows what the future may bring and what we can do to make it better with or without scientific inventions.Could it benefit?How would life be if we do not try and invent new inventions?If we do not try how do we know we can’t make the best inventions that exists and makes our lives easier or better.

Adding onto this technology and inventions these days do not just help us revise or help with work all the time.It also helps in hospitals and banks and general practitioners(GP).For example,in operations they use many different instruments and a new instrument is laparoscopy which is made out of high-tech and metal which is a small camera which fits inside your body to remove anything causing pain in the stomach area.Also,heart monitors were made as well from technology.

Banks use many machines to allow people to withdraw money.They also use machines to make stacks of money which then gets transferred from the bank supplier e.g. Bank Of England to many smaller banks e.g.Barclays,Santander,Natwest etc.These stacks of money are carried around by men in uniform saying ‘SECURITY’ which carry a briefcase with them to the bank/banks they deliver to.The main part about what is special from this briefcase is that if anyone apart from the manager or assistant managers try to open or break it to get money they will not be able to open it.Why?This is because it only allows certain people to open it.If anyone else tries to open it then purple dye will come out and destroy the money so therefore it is invalid to use anywhere.This is a scientific invention because it is like a trap for anyone else who tries to open it apart from bank managers etc.Also,the people may not know there’s a trap and if they try open it they will just see purple cash.

I believe it is right to prevent scientific inventions because if we do not stop this therefore we will suffer as we lose our resources if scientific inventions/experiments do not go right or the way the experimenters or scientists expect it to go.Therefore,this is why I believe the statement,’Is it right to prevent scientific inventions?’ is right and should be this way.

Science Homework

In the documentary that we were shown today it talked and explained a lot about weights and its history.It showed us many different shapes and sizes of weights from around the world.They also did an experiment in public to show people that size doesn’t matter.The example which they showed us with was two weights a big one and a small one.They gave it to the public and told them to see which one would seem heavier.The public were shocked to see that the big one and the small one were just about the same size,they were just roughly around 100 grams different to each other.Another example we were shown was an experiment to do with gravity.There was a weight in a special box which shows specifically how much the weight weighs.This experiment was done on ground level.The other part to this experiment was that they would put the same weight with the same box just on another place.They put this other experiment on the top of a block of high flats,which showed there was less gravity so therefore the weight was lighter.It was roughly 100 grams lighter than the weight on ground level.This was explained to us by the talk of gravity and how objects turn lighter as they are higher than ground level.This was what the documentary was showing us about.

Literary essay

 


In this essay I am going to be writing about the development and how the play of MacBeth could improve.Also,speaking about how the language has changed from then to now and what the changes in past and modern English is.All of this is based on the question,’To what extent is MacBeth a tragic hero or just a butcher.

Firstly,I would like to talk about how MacBeth was too scared to be able to kill guards or even do anything that includes murdering or abusing anyone.He normally would leave all the dirty work to lady MacBeth because he’s scared.But also on the other hand he’s changing so much in  a few weeks.For example he was so scared about bein able to go and murder people but now as we were reading this we found out he wasn’t a very nice person like at the start.Right now on most of the last few scenes MacBeth isn’t the same person as we saw at the start.He was nice and that at the start but right now he’s all different.He’s a murderer,scary and disrespectful man from before when he was kind, respectful and happy;he’s scary disrespectful and annoying now than from before.

From the question asked,’To what extent is MacBeth a tragic hero or just a butcher?’ I would answer for a fact that he is now a butcher.This is because he kills for fun with no reason to kill.Also,finding people anywhere to kill not caring who it is.

This makes me think about how dangerous this man and how much of an assassin he’s changed into.Also,he’s not only hurtin people he hates but adding onto that abusing and murdering the people around him.It’s like he’s addicted with doing this and it’s like this is his hobby/job to be going round killing people.Evidence to back up my point in why I would say he is a butcher is the saying in one of the scenes,’Come,put mine armour on;give me my staff.’ By this quote it shows us that he is prepared and ready to kill anyone in his way and nothing is in his way to stop him.

Other people may think the same because it is clear in the text that he’s changing from one person that is scared to do things for example murder,attack or insult people to a guy that loves murdering and hating people.This may be because people were hating and putting him down by hating and not wanting him around.

He eventually got tired for example in Act 1 Scene 5 because he was getting pushed around by Lady MacBeth and decided after a few scenes,that he needs to change and not allow anyone to be pushing him around because at the end of the day he’s the King and every order of his should be respected and those who choose to go against it should be punished for not wanting to follow or respect the King’s orders.Also,showing that in Act 3 Scene 4 it’s saying,’Thy blood is cold.’ Which is showing that people’s hearts are cold for example,they don’t care about anything around them and disrespect anything to anyone they don’t like or don’t know.

  • As time changed,so did MacBeth;he showed no guts to do nothing before but right now he’s showing his true dark side and is showing how scary and how he can get respect off anyone or else he murders them or he would take them as prisoners. Another point I have is that he is not a person you would like to meet or want to be your friend.Do you want to know why? It is because one minute he could be your best friend,the next day you could be his worst enemy and he would want to kill you for no reason for you to be killed.Therefore you wouldn’t want these types of friends that will want to kill you any moment in the most unexpected time.
  • Adding onto that MacBeth shows that he is trully King and nothing stopping him or getting in his way.This is by the way he’s demanding the witches to tell him the truth and if they don’t he will curse them and therefore the witches were made to tell MacBeth because he’s gone stronger and scarier than before.Like before he was all quiet and didnt want to do nothing but now he’s just doing everything to make his kingdom listen to him and respect his opinion.This is shown in Act 4 Scene 3 saying,’Deny me this and an eternal curse will fall on you.’
  • These are the main points of my opinion in the question,’To what extent is MacBeth a tragic hero or just a butcher.’ Others may disagree with my point because of other reasons but in my opinion I would say that my reasons would be more explained and detailed because I’m using quotes.

Diary Entry Of Battle

Dear Diary,

I am writing this to inform what the battle was like and to explain what my feelings were like.The battle was all frightening  and I was worrying if they came and attacked me which would have made my heart beat even faster than normal rate.Also,the win of MacBeth was great leaving the other lost and head down.The opponent was uncomfortable and unconfident about facing the almighty MacBeth.Even the saying,’But all’s too weak for brave MacBeth’ shows that we are in support of brave MacBeth because they are expressing how strong he is and how scared the opposition should be.It felt very uncomfortable sitting,watching a battle because you never know what could happen next.They can jump and run into the audience trying to attack the public.Adding onto that in my opinion I think that was a pretty easy fight for MacBeth and was no struggle or stress in winning.This is because there is only one MacBeth and noone can be like him.

 

Letter about MacBeth

Dear Bob,

I’m writing this to tell you about the act 1 scene 1 of MacBeth.Firstly,I think that it’s going to be a sort of long scene which can fit in a lot of things that could go with the scene.Also,the background would be a kind of dark scene,with dark clouds,pouring rain,thunderstorms and very strong wind.Adding onto that,I think that I should make dark and dirty clothing for the witches which are meant to look old and scary.Secondly,I would concentrate more on the scene and how it is going to look like on stage and also try give a picture in the readers head of what its going to look like.The thing I would concentrate on would be the shape and size the clothes would be for example hat size,shoe size etc.The clothes would be the most important because without it the actors can’t do a proper play and wouldn’t be able to act because the audience would be confused by who’s acting what part.We would have to use stuffed animals for the cat,toad and the other unknown animal because it would be more realistic and would make the audience like it even more.Also,it will make them realize that they paid good money to watch an amazing piece of MacBeth act and scene.Adding onto that another piece of the play that would be important would be that the actors would need the right amount of time and the right place/scene to rehearse and get the things that they need for example,resources,clothing and props etc.Also learning their stage positions and knowing where they need to go so that in the play they look perfect,prepared and also look professional while they perform and act the scene they are meant to do.The thing we would need to practise on would be the voices and technology needed behind the stage to make the voices and cackling of the witches.Also,we would have to make the actors learn about the accent and the type of old fashion language that they used to use.Once we have all of this we can therefore check everything and then make sure people actually have learned their lines and worked out their positions.After that we would be able to do a dress rehearsal and then make sure everything is done and dusted and then once we have all prepared all we need to wait for is the play to come and then we can show the audience what our actors can really do and how they can redo the play,act and scene of MacBeth.Hope you get this and enjoy this Bob.

Leo Diez Suarez

Mini essay

In my opinion I would say that the most effective piece of figurative language is that the way the author creates the children.This makes the readers think that the children are confusing and that the parents wont get it.

I say this by the evidence from the speech which says ‘Children are carpets.’This is because this creates many different images in the readers mind.For example they could be thought as useless and not capable for anything.Also,it could be trying to say that they are quiet and/or getting stepped on (being picked on.) Or also other pictures that the readers might have in their head.

The author uses a lot of effective language in this story.I say this because there is a lot of adjectives in most descriptions.It creates a feeling that children are being shown as disgusting and useless and just a waste of time.