Scientific questions about ionization, some questions about ionization .

First of all, we must understand that sodium chloride is a chemical compound, which is composed of chlorine atoms and sodium atoms through the change of electrons gained and lost, and the products obtained through such changes are generally relatively stable.

Then let's analyze your problem: after sodium chloride is dissolved in water, it ionizes and decomposes into ions, sodium is positively charged, and chlorine is negatively charged at the end of hydrogen atoms and oxygen atoms under the action of water molecules, because the water molecules are not ionized, and then the solution is heated, and the water molecules begin to evaporate due to the high energy, and the water molecules disappear little by little in the water, and the chloride ions and sodium ions that are not connected to the water molecules are re-formed into sodium chloride molecules by themselves. Got it?

Hehe, I hope this can help you a little!

If you want to separate, there's a way to ionize a saturated sodium chloride solution!

It's just what people are used to in chemistry. Actually, you're right. It is more appropriate to call it "a solution containing chloride and sodium ions". But since it has been called this for a long time, it means that it has become a convention.

The problem is that the solute is still sodium chloride.

ps: A solution is composed of at least two substances.

1. A stable mixture in which the dispersed substance (solute) is dispersed in molecules or smaller particles in another substance (solvent). ）

Solution: The formation of one or more substances in the form of molecules or ions dispersed in another substance.

1. Stable mixture.

Reading: It is generally read as "a certain (solvent) solution of so-and-so (solute)", such as alcohol can be read as "aqueous solution of ethanol".

Note: If the solvent is water, it can be referred to simply as a solution.

For example, "aqueous solution of ethanol" can be called ethanol solution.

"Aqueous solution of sodium chloride" can be called sodium chloride solution.

It's just a name ... It's really ionic.

This is the idiomatic name, which is relatively concise and easy to understand. Hope!

Ionization energy refers to the amount of energy required to move one electron out of an atom or molecule. It is influenced by the following factors:

1.Number of nuclear charges: The greater the number of nuclear charges in an atom or molecule, the stronger the electrostatic force between the electrons and the nucleus, and the higher the ionization energy.

2.Electron orbital radius: Electrons have different average distances in different orbitals. Electrons in the inner orbitals closer to the nucleus are usually more attractive to the nucleus and hence the energy required to remove these electrons is higher.

3.Shielding effect: The repulsion effect from other electrons can attenuate the nuclear attraction of outer electrons to inner electrons. Therefore, an atom or molecule with more inner shell electrons has a lower ionization energy.

4.Electronic configuration: Electronic configuration determines the electronic filling method and energy level distribution. Stable electronic configurations, such as noble gases, typically have higher ionization energies because their electron layers are already filled.

5.Intermolecular interactions: For molecules, ionization energy is also related to intramolecular bonding and intermolecular interactions. Certain chemical bonds may enhance or decrease ionization energy.

Together, these factors affect the ionization energy of an atom or molecule. It is important to note that ionization energy can be divided into one ionization energy and multiple ionization energy, which represent the energy required to remove one electron and remove more electrons, respectively. Therefore, the magnitude of ionization energy depends on the specific situation and the number of electrons to be removed.

1. In general, the first ionization energy of metal elements.

Smaller, the first ionization energy of non-metallic elements is larger.

2. The first ionization energy of the same periodic element has a tendency to increase from left to right. So the lowest first ionization energy in the same period is the alkali metal element.

The largest are noble gas elements.

3. The first ionization energy of an element in the same period has some twists and turns in the overall increasing trend. When the peripheral electrons form a fully empty, half-full, or full-filled structure in an orbital of equal energy, the energy of the atom is lower and the first ionization energy of the element is greater.

4. Elements of the same main family.

From top to bottom, atomic radius.

If the effective nuclear charge does not increase much, the effect of the increase in the atomic radius plays a major role, and the first ionization energy changes from large to small, and the metallicity of the element gradually increases.

Extended Materials. 1. Ionization energy significance.

Ionization energy is a measure of how easily an atom of an element loses an electron (which can be approximated as metallic).

2. Expressions.

The symbol of the first ionization energy is i1 and the unit is kj mol. Gaseous atoms form +1 valence gaseous filial cations.

The process can be expressed as: m(g)e-m+

g) (any form is a coincidence). The unit is kj·mol-1 (the unit of Si is j·

mol-1）。

The magnitude of the ionization potential depends mainly on the effective nuclear charge of the atom, the radius of the atom, and the electronic configuration of the atom. In general, elements of the same period have the same number of modified electron layers, the effective nuclear charge increases from left to right, the radius of the atom decreases, and the gravitational pull of the nucleus on the outer electrons increases.

Categories: Education, Science, >> Science & Technology.

Problem description: Why is it ionized? (the process by which ionization occurs).

Can all matter be ionized?

Can ionization only happen in water? If not, please cite some other substances that can be used, and if so, why?

Thank you. Analysis:

You're talking about chemical ionization. Some scientific terms are defined differently in different sub-disciplines, leaving aside gas ionization, chemically ionization refers to:

When the electrolyte is dissolved in water or melted by heat, it produces free-moving ions, which is called ionization.

Ionization does not necessarily occur in water, such as when table salt is heated to melting, but it can also ionize to produce free-moving ions: sodium and chloride.

As for the causes of ionization: it can be summarized into two factors: the irregular movement of microscopic particles and the action of polar solvents.

1. First explain the ionization caused by the irregular motion of microscopic particles.

When an ionic compound is in a solid, the ions can only vibrate near the equilibrium position. After heating, the temperature increases, and the regular movement of ionic stateless blind bonds intensifies. When the temperature reaches the melting point of the electrolyte, it continues to absorb heat, the electrolyte melts, and the ion movement undergoes a qualitative change, which can move freely and become free ions.

2. Then explain the polar solvent to ionize the electrolyte.

When HCl is dissolved in water, since HCl and H2O are both polar molecules, one end of the oxygen atom of H2O is negatively charged, which attracts the positively charged hydrogen atom in HCL, and the one end of the positively charged hydrogen atom of H2O attracts the negatively charged chlorine atom in HCL.

Ionization: The process by which atoms and molecules form ions under the action of physical energy.

The process by which an electrolyte dissociates into freely moving anions and cations in an aqueous solution or in a molten state.

The only substances that are difficult to ionize are weak acids, weak bases, and water.

Strong bases are only potassium, sodium, barium, and calcium. It is commonly known as the four strong bases. Others are weak bases.

For acid, I have a mantra for acidic strength here, which is basically enough until the third year of high school:

Salt nitrate sulfur is a strong acid (hydrochloric acid, nitric acid.

sulfuric acid), thiophosphoric acid, medium strong acid (sulfurous acid, phosphoric acid).

Weak acid, vinegar, accompanied by Changqin carbon-sulfur (acetic acid.

Carbonic acid, hydrogen and sulfur taste, chew and mix wedges, blind acid).

Only hydrocyanide is followed by noble acid (hydrocyanic acid, hypochlorous acid.

Silicic acid) is difficult to ionize in the equation from medium to strong acid, and all subsequent ones are (including sulfurous acid). Lubi.

Generally, substances that can react with oxygen, or violent redox reactions that can react with certain gases, are combustion, and vice versa.

Ca(OH)2 is a strong base, strong electrolyte, partially completely ionized in water: Ca(OH)2 == Ca2+ +2OH-

The strong electrolyte is completely ionized in water dissolved in water. The weak electrolyte dissolves in water and is partially ionized.

Adding alkali to the water will ionize oh-, but the degree of ionization is not the same. Strong bases are completely ionized, and weak bases are partially ionized.

H+ is ionized with acid, but the degree of ionization is not the same. Strong acids are completely ionized, and weak acids are partially ionized.

You'll find out when you learn about electrolytes.

Ionization is the decomposition of chemical synthesis into ions under the use of water.