What is the relationship between molecule and atom with regard to molecule and atom?

Note that if the number of molecules is so small that it is divided into odd and even numbers, it cannot be described as a general chemical reaction, because the basic chemical reaction is macroscopic.

Generally speaking, even if there is only one drop of water, you will not be able to count the water molecules in your lifetime, hundreds of millions of billions or so.

In any solution there is an ionic equilibrium, and in a drop of water there are very few oxygen ions and hydrogen ions, and the number of these ions is very impressive, but the ratio to the total water molecules is negligible.

And all chemical reactions are reversible, but the reverse reaction of ionization of water is too small, similar to the ions in water, that is, no matter whether the number of water molecules is odd or even, they will not completely become hydrogen and oxygen, and a little bit is still water (this little bit is much less than the little point we usually say, but because the number of molecules is too huge, it exists on a microscopic scale).

Taking 10,000 steps back, even if the water is completely ionized, what if there is an extra water molecule that cannot react, it is like a freak among the 6 billion normal people in the world, regardless of the overall situation (in fact, there is more than one extra molecule in the water in 6 billion).

There is the state of O-, that is, the oxygen molecule can also be understood as a combination of O- and O+, although it is generally said that the oxygen molecule is a covalent compound, but this is not absolute. In many intermediates, it is believed that there is O-, so the landlord's question can be said to be that the odd number of oxygen atoms n form (n-1) and the last of the two oxygen molecules exists in the form of o- or o+.

The first floor is very comprehensive, presumably the teacher.

1. Neutron + proton = nucleus. The nucleus is made up of two types of particles, protons and neutrons. The proton is made up of two upper quarks and one lower quark, and the neutron is made up of two lower quarks and one upper quark.

2. Nucleus + electron = atom. An atom is made up of a nucleus and electrons that move around the nucleus. Atoms make up the smallest unit of matter in general, known as elements. There are 119 known elements.

3. The volume of the atom is determined by the number of outer electron layers, and the mass is determined by the number of neutrons and protons of the nucleus.

4. Protons are positively charged, neutrons are not charged, and electrons are negatively charged. Therefore, in an atom, the same number of protons and electrons can maintain equilibrium. If the number is different, then this atom is called an ion.

5. A molecule is a whole that is composed of atoms that are bound together according to a certain bonding order and spatial arrangement, and this bonding order and spatial arrangement relationship is called molecular structure. Due to the interaction between atoms within a molecule, the physical and chemical properties of a molecule depend not only on the type and number of constituent atoms, but also on the structure of the molecule.

Molecules and atoms are both particles that make up matter, very small in mass and volume, separated from each other, constantly moving, both of which are different in type and number, and are not electrically significant. The molecules are always in constant motion, and there are gaps between the scattered ridge molecules.

Molecules and atoms are not completely unfamiliar to jujube students in the third year of junior high school, and they are exposed to molecules and atoms in primary school nature, junior high school biology, and physics classes. However, what kind of particles and atoms are they lack an accurate internal appearance. Since molecules and atoms can neither be seen nor touched, it is difficult for students to truly establish a clear concept of molecules and atoms.

Introduction

1. The molecular mass and volume are very small.

2. Molecules are always moving in the rock. As the temperature increases, the speed of molecular movement increases.

3. There are spacings between molecules. Generally speaking, gas molecules are separated by a larger distance, and the molecules of liquids and solids are separated by smaller distances.

4. The molecular properties of the same substance are the same, and the molecular properties of different substances are different.