The elements that make up matter, what are the components of matter?

In general, a piece of iron contains a small amount of iron isotopes, but it is mainly made up of one atom.

The percentage of the number of atoms of various isotopes is constant, so in some substances, the mass fraction of isotopes is certain (for example, the isotope of oxygen is 95% oxygen 16, oxygen 17 accounts for 3%, oxygen 18 accounts for 2%, then oxygen is 16 95% in a certain amount of oxygen, and so on).

First of all, there is no such thing as absolute purity in the universe. So the same piece of iron is made up of isotopes of iron. Among them, 56Fe is the most stable in nature and has the highest content in nature. In general, 56Fe atoms account for the largest proportion of iron products.

If the element has no isotope, it is made up of atoms of the same kind. Otherwise it is made up of isotope atoms.

The atoms are different, mainly the nucleus.

Water and iron are two different atoms at all.

The nucleus is composed of protons and neutrons, but they are generally not separated, only electrons outside the nucleus are transferred.

The nuclei are going to be separated, that is, fission, which will produce a huge capacity, but the conditions for occurrence are relatively replicable, and this is how nuclear power plants work.

You are talking about protons and neutrons are the same, and the composition of different substances depends on the number and arrangement, and you are right.

It is the same kind of atom. Isotopes refer to atoms with the same number of protons and different numbers of neutrons. Such as isotopes of hydrogen, deuterium, deuterium, tritium.

Introduction: In the world of science, matter has its own components, they will be composed of ionic molecules or atoms, and these molecules will be combined into new matter through motion. So let's take a look at the composition of matter.

<> we need to know that matter is made up of molecules, ions and atoms, and ions are made up of atoms or some ionic bonds.

combined, so the essence of matter is made up of atoms. And we know that there are some atoms in life, which are divided into nuclei.

In addition to some nuclei, there will be some hydrogen in the composition of electrons, so the nucleus is not composed of a kind of proton, it is a kind of substance composed of a nucleus in all atoms into protons and neutrons, and there will be some material composition at this time. In our daily lives, we can find that matter can be in gaseous, liquid and solid forms, and when the gas is heated, it will also sublimate into another state.

First of all, let's talk about the solid substance, it will have its own fixed shape, this is gas and liquid are not, and when we know the shape of the solid, we can exert a pressure on the solid, extrude, it will become a variety of forms, although its total volume is unchanged, but it will also become liquid after heating under certain circumstances, especially limestone and some crystals and metals, it is a solid substance. We will also find that the gaseous state can be heated, after heating it, it will become some atoms, and there will be some charges in it, at this time people only have one state, at this time there will be gaseous, liquid state, solid state, they always have their own transformation between different states. In fact, their transformation requires conditions, and they can only be transformed when the conditions are met, so we should pay attention to some scientific natures.

Matter is made up of molecules, ions, atoms. Molecules are formed by the union of atoms by covalent bonds; Ions are formed by the bonding of atoms through ionic bonds.

The composition of matter, there are molecules, atoms, ions, small particles, metal atoms, noble gases, which are all elements.

There are molecules, ions, atoms, nuclei, and electrons outside the nucleus, all of which can make up matter.

It will be made up of molecules, atoms, and ions, and they will be combined by ionic bonds, so that they will form matter.

Elements make up matter. Matter is composed of molecules and atoms, and elements are a general term for a class of atoms. Molecules, atoms, and ions are all microscopic particles, and the term "composition" should be used to describe matter, not "composition".

Elements denote macroscopic concepts, and "composition" is applied when describing matter.

The Historical Origins of Elemental ThoughtThe origin of the idea of elements is very early, the ancient Babylonians and ancient Egyptians once regarded water (and later air and earth) as the main elements of the world, forming the three-element theory. The ancient Indians had four major doctrines, and the ancient Chinese had the Five Elements Doctrine.

The doctrine of the elements, that is, the doctrine of the elements as the simplest constituent parts of all real objects in nature, has arisen since time immemorial. However, in ancient times, the modern notion of elements as a concrete form of matter did not exist. Whether in the ancient philosophy of our country, or in the ancient philosophy of India or the West, the element is regarded as an abstract, a manifestation of the primitive spirit, or the basic nature of matter.

Elements make up matter.

Matter is made up of elements, for example, water is made up of hydrogen, oxygen. Matter is made up of molecules, atoms, or ions, for example, sodium chloride is made up of chloride ions, sodium ions.

Element is a general term for a class of atoms, and it is not a word about the number of atoms. Molecules, atoms, and ions are all microscopic particles, and the term "composition" should be used to describe matter, not "composition". Elements denote macroscopic concepts, and "composition" is applied when describing matter.

The nature of the element

The properties of the elements are mainly valency, metallic and non-metallic. The valency of the element can only be reflected in the compound, the metal element must be positive, the non-metallic element may have a positive valence, or it may show a negative valence, the valency algebra in the compound must be zero, through the change of the valency of the element in the reaction, the essence and principle of the redox reaction can be analyzed, and the common oxidants and reducing agents can be familiarized.

The metallicity and non-metallicity of the element must be proved by the properties of the relevant substances, such as the non-metallic properties to be explained by the difficulty of the reaction between the non-metallic elements and hydrogen or the stability of the formation of hydrides, the displacement reaction between the non-metallic elements and salts, the acidity of the hydrates of the most ** oxides, etc.

Different substances have different properties, that is, substances formed by the same elements, and the properties are also different, as is the case with allotropes.

The above content reference: Encyclopedia - Chemical Elements.

Also known as chemical elements.

with the same number of nuclear charges.

A general term for atoms. For example, hydrogen, carbon, oxygen, sulfur, iron, etc., are all elements. It does not matter if they exist in the form of elemental or compound compounds.

Their nuclear charge numbers are etc. According to the main properties, it can be divided into three categories: metallic elements, semi-metallic elements and non-metallic elements, but sometimes it is difficult to demarcate the boundaries. Some of the elements are artificially created radioactive elements.

The topic I will share with you today is the birth of elements, and everything is composed of various elements, so where do they come from? Whether they were originally there or were they made, today we will talk about this topic.

We know that the universe was born out of the universe.

Then Gamow, who put forward the big ** hypothesis, believed that at the beginning of the universe, all matter should be tightly packed into a very small space and in a state of extreme heat, in Gamow's own words, this is a state of the fireball universe, in which only protons, neutrons and electrons that have not yet formed atoms fly around at extremely high speeds.

There is only one proton in the nucleus, that is to say, in the earliest stage of the universe, in 1948, Gamaf discovered through theoretical research that in the fireball universe, hydrogen nuclei, that is, protons, can interact with neutrons to produce two protons and two neutrons.

People finally understood why hydrogen and helium are the most abundant elements in the universe, and after talking about hydrogen and helium, where did the other elements come from, according to Gamow's vision at the time, all the elements in the universe were synthesized in the fireball universe.

However, after careful study, he found that in addition to hydrogen and helium, only a small number of lithium nuclei can be formed in the Fireball Universe. So where do the elements come from? British astronomers have discovered that the collision of two nuclei can produce a nucleus with a mass of eight, which exists for an extremely short period of time, only about one hundredth of a second, but in this extremely short period of time, if another helium nucleus is added, it is possible to form a carbon atom.

This reaction, known as the triple alpha reaction, is able to sustain nuclear fusion for only about 20 minutes.

It is impossible for this reaction to occur.

But a star has a long lifespan, a short one million years, and it is possible that a sufficient number of such reactions can occur in the center of the star to generate carbon nuclei, so that after the carbon nucleus. It's not hard to continue nuclear fusion and synthesize those heavier nuclei.

1. It can be composed of elemental matter: for example, iron is composed of iron.

2. It can be composed of pure substances: for example, sulfur elements can be composed of sulfur element, and sulfur elemental matter is a pure substance.

3. It can form a mixture: for example, oxygen can form oxygen and ozone, which are mixtures.

Note: An element can never make up a compound.

26 chemical elements: H (hydrogen), HE (helium), LI (lithium), BE (beryllium), B (boron). C (carbon), N (nitrogen), O (oxygen), F (fluorine), Ne (neon).

Na (sodium), mg (magnesium), Al (aluminum), Si (silicon), P (phosphorus). S (sulfur), Cl (chlorine), AR (argon), K (potassium), Ca (calcium).

The way in which chemical elements are sortedThere is an obvious regularity in the electron arrangement and properties outside the nucleus of atoms, and scientists arrange them in increasing atomic numbers, placing elements with the same number of electrons in the same row and elements with the same number of electrons in the outermost shell in the same column.

Each horizontal row in the periodic table is called a period, and each vertical row is called a family (vertical row is a family). These 8 cycles can be divided into short cycles, long cycles) and incomplete cycles (8). There are 16 families, which are divided into 7 main families ( a a a), 7 secondary families ( b b), families (including three vertical rows), and one zero family.