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Talking as a team, we agree that everything we learned was helpful and is going to support our knowledge in the future. Especially, we want to mention that we enjoyed talking about the periodic table and its organization, it was a new world seeing how everything was calculated from various groups and not just by one reason but a lot, like atomic number, groups, families, mass, etc.

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Chemicals bonds refers to the formation of bonds between two or more atoms, molecules or ions to give raise to a chemical compound. These links give stability to the final result. When an atom has an extra electron or one less than necessary it becomes an unstable atom. If an atom does not fill its valence orbit, the phenomena of radioactivity and nuclear reactions are created.

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Over the years the table has been modified, elements discovered after its creation have been added, the atomic weight of various elements has been changed, new theories of how various elements behave have been discovered, and it has clearly changed itself. its entire structure. The periodic table currently has 118 elements that are arranged in various ways to be able to find the element you are looking for quickly.

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Nuclear energy is the energy in the nucleus, or core, of an atom. There is a huge amount of energy in an atom's dense nucleus. In fact, the power that holds the nucleus together is officially called the "strong force". Nuclear energy can be used to create electricity, but it must first be released from the atom. In the late 1930s, we discovered that some particularly large atoms found in nature can be split into two, releasing a shocking amount of energy as heat. Because the energy emerges from the atomic nucleus, we call it Nuclear Energy.

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Particle radiation is made up of any subatomic particles, such as protons, neutrons, and high-speed electrons, capable of causing ionization. Alpha and beta particles are two of the more common types of particle radiation. They come from the nuclei of radioactive atoms through radioactive decay. Subatomic particles play two vital roles in the structure of matter. They are both the basic building blocks of the universe and the mortar that binds the blocks. Although the particles that fulfill these different roles are of two distinct types, they do share some common characteristics, foremost of which is size.

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-DALTON:
In the 17th century, John Dalton proposed the atomic theory, he described atoms as small, spherical and indestructibles. He established that:

All elements are made up of small particles

Atoms of the same element are identical.

-J.J THOMSON:
He discovered that the atom has charge, and that there was a new particle called electrons. In his model, the atom is made up of negatively charged particles embedded in a possitevely charged sphere.
-ERNEST RUTHERFORD:
He used rays from a radioactive source to determine the atomic structure. The detection showed that most of the particles passed through the gold ford as if there was nothing in the way. He gave the name to protons and established atom was made up of a shell and a nucleus.

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Several chemical transformations occur in nature, the one that i think is easier to explain and understand is when a fruit rots, this process in chemistry is called oxidation, and it happens when a fruit or vegetable come into contact with oxygen, the same happens with iron.

As for the physical processes, the best known is the evaporation, this occurs when the sun heats the water until it evaporates, which causes it to become steam.

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-Mathematics:
It helps formulate equations and calculations that explain the behaviour of matter.
-Physics:
It provides laws and concepts to chemistry, which are the base for its principles.
-Biology:
It uses chemistry to determine the substances that constitute living beings.

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Atoms lay down the structure of all the matter present around us. Atoms combine in order to form molecules which are the fundamental particles of any substance or matter. Without atoms, the existence of molecules, elements, and matter is not possible. Chemical elements are important to living organisms because they make up the organic molecules that are found in all living things. Organic molecules are carbohydrates, proteins, lipids, and nucleic acids, and all of these molecules contain carbon as their main element.

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-Agriculture:
It requires and uses substances that run increase crop fields or develop products.
-Engineering:
It contributes to the research and production of materials, creation of machines, etc.
-Medicine:
It colaborates in the development of chemical compounds for the treatment of diseases or for timely detection.
-Astronomy:
It uses chemistry for the study of the abundance and reaction of molecules in the universe, and their inetraction with radiation.

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Firstly, the table is divided by rows, which are called periods, which go vertically on the outer left side of the table, these go from 1 to 7, one number per row.

The next form of organization is the families or groups, there are 18 of these, which are in the columns of the table and are arranged in ascending order according to their atomic number. Chemical bonding is understood as the combination of atoms to form chemical compounds and give stability to the resulting product. In this process, atoms can share or give up electrons from their outermost shell to unite and create a new homogeneous substance.

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There are two types of chemical bonds: ionic and covalent. The covalent occurs when non-metallic atoms share electrons while the ionic occurs when there is a union of metallic and non-metallic atoms.

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Uses of nuclear energy:

Space Exploration: Radiostope power systems provide heat and power for deep space exploration.

Energy: Nuclear energy provides 20% of the electricity in the USA.

Medical diagnoses and treatment: Patients are diagnosed and treated using radiation or radioactivematerials like radioisotopes.

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-NIELS BOHR:
He worked with the hydrogen atom and exposed it to energy to see what happened. His atomic model is the planetary model. He established that electrons revolve in defined orbits with a certain amount of energy.
-ERWIN SCHRÖDINGER:
He used the wave-particle duality of the electron to develop and solve a complex mathematic equation that accurately described the behaviour of the electron in a hydrogen atom.
-LOUIS-VICTOR DE BROGLIE:
He postulated wave-particle duality for the electron and other massive particles. He established that matter has wave-like properties, and he also introduced the quantum numbers.
-WERNER HEISENBERG:
He introduces the uncertainty principle in the electron orbitals that surrounds the atomic nucleus.

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Advantages:

Splitting atoms is a carbon-free process so nuclear power is a global solution to cclimate change.

Nuclear reactors can make energy on demand as needed.

Disadvantages:

Risk of accidents.

Radioacive waste.

Limited fuel supply.

Impact on enviroment.

Expensive build coast.

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The appearance or form of matter changes during a physical change, but the type of matter in the substance does not. A chemical change, on the other contrary, results in the creation of at least one new substance with new properties.

Chemical changes usually involve the production of energy (which can be in the form of heat, light, sound, etc.). When a substance undergoes a physical change, its composition remains the same despite its molecules being rearranged.