Narration and dialogue about atoms
Narration and dialogue
The Development of Atomic Theory
Since the early 1900s scientists have known that the material-forming atoms are made up of tiny nuclei surrounded by electrons. The core is made up of particles that look tight. In this article the development of atomic theory we will discuss the development of the theory about the atom based on the discovery of the findings that have been done by the physicists.
The Dalton Atomic Model
John Dalton (1766-1844), a British scientist supported by the results of his experiments developed the atomic concept of Democritus which later revealed the theory of the atom. Broadly speaking Dalton atomic theory can be summed up as follows:
Atoms are the smallest part of a substance that can not be divided again.
The atoms of a particular substance have the same properties.
The atoms of certain elements can not be transformed into atoms of other elements.
Two or more atoms can unite (react) to form molecules.
Teacher: All students, do you not yet understand the atomic material we learn today?
All the students were silent
Teacher: Why are you just silent ??? I assume to have understood. Okay then we will test the test of understanding, if no one wants to ask.
The student is restless, until in the end, the student asks a question.
Student1: Hang on, I still do not quite understand.
Teacher: Good Anton, at least you will be stalling the test time for a while. What do not you understand about atomic material this time ??? Murid1: (sly smile), here goes, Mom, I still find it difficult to understand the theory put forward by John dalton that atoms are the smallest part of an irreversible substance. Can you explain it again? Teacher: Okay, so here goes. Atoms are: The smallest unit of a material consisting of a nucleus, which usually contains protons (charge +) and neutrons (neutrals), and skins that contain negative charges of electrons. There is also a mention that the atom is the elemental constituent particles. Both of these are all correct. That certainly the atom: - have protons, neutrons, electrons, (except for Hydrogen-1, which has no neutrons) - have certain characteristics, that is, have the same number of protons and electrons (if the same is not called ion) - atoms that have the same characteristics are called elements, Student2: Then what about the electron and proton Bu? Teacher: You're impatient, Dimas. I explain slowly so you can understand and understand it. Regarding the atom is the smallest unit is it clear ??? Anton ??? Others ??? Student1: I understand Mom, Simple analogy: Everyone who often read, we call the book sikutu, the story we have 4 friends who have a hobby of reading, so we sum up all four of our friends are my followers because they have the same habit. So our friend = atom, Sama2 read hobby = have the same number of protons & electrons / character, Sikutu buku = element Teacher: Great if you already understand. Its size Although so small, inside the atom there is a flawless, unique, and complex system that in its sophistication is proportional to the system we see in the universe in general. Each atom is made of a nucleus and a number of electrons move around its orbit which is very far from the core. Inside the core there are other particles called protons and neutrons. Murid3: But Mom, why can you see and know the atom ??? Teacher: Hmmm, look like this. So why can we see an object with the naked eye, do you mean to ask your question ??? Student3: yes indeed. Teacher: In everyday observations, the atom is considered to be a very small object with a proportionally small mass. Atoms can only be monitored using special equipment such as atomic force microscopes. More than 99.9% of the atom's mass is centered on an atomic nucleus, [note 1] with protons and neutrons having the same mass. All the students nodded. Teacher: okay if so, since my hour is up, then I will still hold the test of understanding test next week. Learn well yes. I will ask you to explain a detailed description of the atomic theory of danton and the others I just described. Okay, thanks, assalamualaikumwr.wb. Have a good rest. Students: waalaikumusalamwarahmatullahiwabarakatuh. Yes mom. Be careful.
The Development of Atomic Theory
Since the early 1900s scientists have known that the material-forming atoms are made up of tiny nuclei surrounded by electrons. The core is made up of particles that look tight. In this article the development of atomic theory we will discuss the development of the theory about the atom based on the discovery of the findings that have been done by the physicists.
The Dalton Atomic Model
John Dalton (1766-1844), a British scientist supported by the results of his experiments developed the atomic concept of Democritus which later revealed the theory of the atom. Broadly speaking Dalton atomic theory can be summed up as follows:
Atoms are the smallest part of a substance that can not be divided again.
The atoms of a particular substance have the same properties.
The atoms of certain elements can not be transformed into atoms of other elements.
Two or more atoms can unite (react) to form molecules.
Teacher: All students, do you not yet understand the atomic material we learn today?
All the students were silent
Teacher: Why are you just silent ??? I assume to have understood. Okay then we will test the test of understanding, if no one wants to ask.
The student is restless, until in the end, the student asks a question.Student1: Hang on, I still do not quite understand.
Teacher: Good Anton, at least you will be stalling the test time for a while. What do not you understand about atomic material this time ??? Murid1: (sly smile), here goes, Mom, I still find it difficult to understand the theory put forward by John dalton that atoms are the smallest part of an irreversible substance. Can you explain it again? Teacher: Okay, so here goes. Atoms are: The smallest unit of a material consisting of a nucleus, which usually contains protons (charge +) and neutrons (neutrals), and skins that contain negative charges of electrons. There is also a mention that the atom is the elemental constituent particles. Both of these are all correct. That certainly the atom: - have protons, neutrons, electrons, (except for Hydrogen-1, which has no neutrons) - have certain characteristics, that is, have the same number of protons and electrons (if the same is not called ion) - atoms that have the same characteristics are called elements, Student2: Then what about the electron and proton Bu? Teacher: You're impatient, Dimas. I explain slowly so you can understand and understand it. Regarding the atom is the smallest unit is it clear ??? Anton ??? Others ??? Student1: I understand Mom, Simple analogy: Everyone who often read, we call the book sikutu, the story we have 4 friends who have a hobby of reading, so we sum up all four of our friends are my followers because they have the same habit. So our friend = atom, Sama2 read hobby = have the same number of protons & electrons / character, Sikutu buku = element Teacher: Great if you already understand. Its size Although so small, inside the atom there is a flawless, unique, and complex system that in its sophistication is proportional to the system we see in the universe in general. Each atom is made of a nucleus and a number of electrons move around its orbit which is very far from the core. Inside the core there are other particles called protons and neutrons. Murid3: But Mom, why can you see and know the atom ??? Teacher: Hmmm, look like this. So why can we see an object with the naked eye, do you mean to ask your question ??? Student3: yes indeed. Teacher: In everyday observations, the atom is considered to be a very small object with a proportionally small mass. Atoms can only be monitored using special equipment such as atomic force microscopes. More than 99.9% of the atom's mass is centered on an atomic nucleus, [note 1] with protons and neutrons having the same mass. All the students nodded. Teacher: okay if so, since my hour is up, then I will still hold the test of understanding test next week. Learn well yes. I will ask you to explain a detailed description of the atomic theory of danton and the others I just described. Okay, thanks, assalamualaikumwr.wb. Have a good rest. Students: waalaikumusalamwarahmatullahiwabarakatuh. Yes mom. Be careful.
Why is Hydrogen-1, which has no neutrons?
BalasHapusHydrogen has no neutrons because its core condition is stable. Hydrogen has an atomic number of 1, meaning it has only 1 proton, therefore it is stable. If there are 2 protons, then each will resist due to the same type of charge, therefore neutrons are required as a nuclear bonding force to balance. Which neutron is not needed on hydrogen which only has 1 proton.
Hapushi eka, What is the difference between protons, neutrons, and electrons?
BalasHapusThe definition of Proton is as follows: Definition Proton is a positively charged electrical charge carrier. We are a non-profit organization engaged in education, a smart and prosperous nation is the dream of all people, therefore we started with the education program Indonesia. May be useful.
BalasHapusUnderstanding Proton We are a group engaged in education. We provide various educational content such as understanding, explanation, work, classification, benefits, disadvantages, advantages, weaknesses, laws, comparisons, structures, structure, sounds, nature, method theory, ways, definitions, formulas, sample questions, , Educational videos and many others to support the growth of the intelligence figures of the people of Indonesia because the intelligent and civilized people are our desires together, therefore we started with education care programs.
Electrons are negatively charged particles. Electrons are located in atoms (bound to atomic nuclei) and cause chemical properties. In the metal, electrons are ebas (unbound atoms) so they can conduct an electric current. In semiconductors, the flow of electrons can be adjusted so that diode, transistor and others can be made.
The name of electron is proposed by G.J Stoney. The invention of electrons starts from an experiment conducted by J.J Thomso (1897) with a cathode ray tube. This experiment successfully measured the ratio between the electrical charge and the cathode ray mass. According to Thomson, this cathode ray is part of an atom called an electron.
Neutrons or neutrons are subatomic particles that are neutral and have a mass of 940 MeV / c² (1.6749 × 10-27 kg, slightly heavier than protons.) The rotation is ½.
The atomic nucleus of most atoms (all except the most common Hydrogen isotope, consisting of a proton) consists of protons and neutrons.
Explain more about atom?
BalasHapusAtoms are a basic unit of matter, consisting of atomic nuclei and the negatively charged cloud of electrons that surround it. The atomic nucleus consists of a positively charged proton, and neutrons are neutrally charged (except at the nucleus of Hydrogen-1 atom, which has no neutrons). The electrons in an atom are bound to the nucleus of an atom by an electromagnetic force. Such a set of atoms can bind to each other, and form a molecule. Atoms containing the same number of protons and electrons are neutral, while those containing different numbers of protons and electrons are positive or negative and are called ions. Atoms are grouped by the number of protons and neutrons found in the nucleus of the atom. The number of protons on the atom determines the chemical element of the atom, and the number of neutrons determines the isotope of the element.
HapusWhat learning method do you use in the learning?
BalasHapusThe method of learning that I make is the atomic explanation and ask questions to the students to be active in learning.
Hapuscan you give me characteristic about The Dalton Atomic Model ?
BalasHapusAtomic Theory Dalton has some disadvantages when viewed from the modern atomic teoi. Various weaknesses of Dalton atomic theory are as follows:
HapusA. Dalton explained that the atoms could not be divided again. Apparently, along with the development of science and technology, it is known that atoms formed from smaller elementary particles than atoms, namely electrons, protons, and neutrons.
B. Dalton assumes that atoms can not be created or destroyed. It turns out, by using nulkir reaction, one atom can be converted into aom of other element.
C. Dalton argues that the atoms of an element have similarities in various things (mass, ukran, and form). Now, it has been proved that the isotope, that the same atom has the same atomic number, but the mass number is different.
D. According to Dalton, the association of elements in a compound has a ratio of simple and rounded numbers. However, now found many compounds with a ratio of numbers that are not round and not simple. As a consequence is the compound C18H35O2Na [3]
The Dalton atom concept is much more detailed than and specific than the concept of Democritus. The first hypothesis states that atoms of one element differ from atoms from the other. Dalton does not try to describe the structure or arrangement of atoms - he has no idea what the atom looks like. But he realizes that the differences in properties exhibited by elements like hydrogen and oxygen can be explained by assuming that the hydrogen atoms are not the same With oxygen atoms. The second hypothesis states that to form a compound, we need not only the atoms of the corresponding element, but also the specific amounts of these atoms. This idea is an extension of a law published in 1799 by a French chemist Josept Prous [4]
What do you do if you become a teacher can not answer student questions?
BalasHapusListen and listen carefully when there are students who ask to make him feel comfortable and appreciated. Setting your eye language and body language to look focused on students who ask at once understand the contents of the question.
HapusConvey your appreciation to the students who ask that the question is very good and ask the other students to give appreciation also by giving the applause for example.
Try to throw the question to another student, maybe some of them can give an answer. If there are other students who are willing to give answers, invite and give appreciation. If it is not there, try to answer it. Give answers that have no dubious elements, because the students need certainty.
If it turns out you can not answer the question immediately, do not immediately say that you can not answer it. Give explanation and understanding to him that you can not answer now and promise that you will find the answer for you to convey at the next meeting. You can estimate yourself when and how long you need to find the answer.
Tips for teachers to minimize dilontarnya questions that most likely you can not answer, try to always focus on the theme of the material you teach. Arrange your RPP as much detail as possible so that it allows you to be on the straight path, not stop here and there.
In conclusion, it should be realized that as a teacher does not mean we are people who know everything. The knowledge and knowledge we have are very limited. It could be what we do not know your students know better. Especially with the current education system that is almost entirely dispesialisasi. You certainly have an in-depth knowledge based on the specialization of your field of science.
Therefore, it is obligatory for a teacher to continue to learn and increase his scientific knowledge not only limited to one field of science alone. When we have graduated from college and earned a college degree, that does not mean our learning process stops there. Precisely behind the title is actually a big responsibility that we bear. Have we deserved a degree as a scholar in the field we take?
From some sources there are states that the atom can be divided again. Why is that?
BalasHapusBecause from every country there are provinces, districts, sub-districts from various regions so that the state is formed
Hapus