(0.4)HISTORY OF ATOM- Antimony explains

Not until around 1910 when Ernest Rutherford doubted the already existing atomic model.

Rutherford was not convinced about the model of the atom

proposed by Thomson. He thus set up his now famous Gold Foil

Experiment.

1. He fired alpha particles (positively charged) at a gold

foil.😮

2. He measured the deflection as the particles came out

the other side.🤥

3. Most of the particles did not deflect at all.

Every now and then a particle would deflect

all the way back.🤔

4. He said that there must be a positive centre of

the foil. He called this centre the nucleus🙄.

Let's look at what he got from his experiment.

RUTHERFORD’S ATOMIC MODEL (AKA THE PLANETARY MODEL)

1. The nucleus of the atom is a dense mass of positively

charged particles.

2. The electrons orbit the nucleus

3. A problem raised was: Why are the negatively

charged particles not attracted by the positively charged

nucleus🤔

4. Rutherford stated that the atom was like a mini solar system and that the

electrons orbited the nucleus in a wide orbit. That is why it is known as

the planetary model.

Hmm. My guy called it planetory model cause it looked like a planet according to him o.🤗🤗🤗

People accepted his idea until another cute guy arose to modify his result. Let's live that for (0.5) next post.

By: Oshinowo Testimony

Antimony

Comments

DNA- Antimony explains

What is DNA? 🤔 Are you thinking what am thinking?😂 DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms. Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA). Mitochondria are structures within cells that convert the energy from food into a form that cells can use. The information in DNA is stored as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T). Human DNA consists of about 3 billion bases, and more than 99 percent of those bases are the same in all people. The order, or sequence, of these bases determines the information available for building and maintaining an organism, similar to the way in which letters of the alphabet appear in a certain order to form words and sentences. Adenine always fix with...

GENE- Antimony explains

What is gene? Hmm. Sounds weird. A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins. However, many genes do not code for proteins. In humans, genes vary in size from a few hundred DNA bases to more than 2 million bases. An international research effort called the Human Genome Project, which worked to determine the sequence of the human genome and identify the genes that it contains, estimated that humans have between 20,000 and 25,000 genes. Every person has two copies of each gene😮, one inherited from each parent. Most genes are the same in all people, but a small number of genes (less than 1 percent of the total) are slightly different between people. Alleles are forms of the same gene with small differences in their sequence of DNA bases. These small differences contribute to each person’s unique physical features.🤔 Scientists keep track of genes by giving them unique ...

(0.6)HISTORY OF ATOM- Antimony explains

Ohh. Now in 1920 this Scientist;Erwin Schrödinger vex and scatter everywhere with his new hypothesis.🤓 Erwin Schrödinger was a revolutionary physicist who used Heisenberg’s uncertainty principle to come up with the atomic model that we still use today. SCHRÖDINGER’S ATOMIC MODEL (AKA THE CLOUD MODEL) After doing a lot of work he concluded these salient points am going to alight now. They include: 1. An electron does not travel in an exact orbit😗 2. We can predict where it will probably be😙 3. We cannot say for certain where it is, but only where it ought to be.😚 4. The type of probability orbit is dependent on the energy level described by Bohr☺ Let's now summarize what we know of atoms. The smallest part of an element is called an atom Each atom (of an element) is different in structure from other atoms (of other elements) An atom can be divided in smaller subatomic particles: Protons, Electrons and Neutrons The nucleus is the centre of an atom. It contains proton...

ANTIMONY

Search This Blog