On the question of the composition of molecules and the composition of substances

It is the molecules that make up the substance, not the composition. Composition refers to microscopic matter, and composition refers to macroscopic matter. And because the molecule is microscopic, it is said to be a composition rather than a composition.

Physics books say that all matter is made up of molecules because this is from a macroscopic point of view, while chemistry books say that matter is made up of molecules, atoms, and ions. The composition of the elements is viewed from a microscopic point of view, so there will be a difference in the statement. It is right to say that matter is made up of elements, because elements are made up of molecules.

And the elements to make matter is right. And there are also substances that are directly composed of molecules (such as iron), so it can be said that they are made of molecules. In this way, there is no conflict.

Landlord, first of all, let me tell you, it doesn't make sense for you to focus on the use of this kind of word. In the senior grades, you can use the words composition and composition correctly, you just have to remember that the molecule is the smallest particle that retains its chemical properties and the atom is the smallest particle of chemical change.

If you have to make a distinction, I can give you a clear answer as well:

Composition, generally used to describe the macroscopic state of matter, for example: water is composed of hydrogen and oxygen.

Composition, generally used to describe the microscopic, such as the water molecule is composed of hydrogen atoms and oxygen atoms.

When we were in elementary school, our teachers told us that small numbers can't be reduced by big numbers. When I went to junior high school, I learned negative numbers and knew that small numbers can be reduced to large numbers; But negative numbers cannot be opened; When I got to high school, I learned that negative numbers could be squared and get imaginary numbers ......

Complex knowledge is difficult for beginners to accept. And scientific knowledge is endless.

Everything that is microscopic (atoms and molecules) is a composition.

Everything that is macroscopic (elemental) is a composition.

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CO2, CO, NO, SO2, SO3, P2O5HCl, H2SO4, HNO3, CH3COOH acetic acid.

C2H5OH ethanol is chopped, C6H12O6 Portuguese code is suspected of eliminating grapes and late sugar.

Matter is made up of molecules; The molecules that make up the substance move in a regular manner without chains like hailstones, and there are gaps between the molecules of the canopy oak

Therefore, the answer is: molecule; In non-stop irregular movement; Clearance

Matter is made up of molecules; The molecules that make up the substance are constantly moving irregularly, and there are gaps between the molecules

Therefore, the answer is: molecule; In non-stop irregular movement; Clearance

Untie; Or do things that are made up of molecules or atoms that have gaps between the molecules, not tightly packed together in a lump

Therefore, the answer to this question is: molecule; Atom; Voids

The molecules are made up: carbon dioxide pyrimene (CO2); neon gas (NE monoatomic molecule); Helium (HE monoatomic divides large huizi); Water (H2O) is directly composed of atoms and is: iron (Fe); silicon (hand simimetic si); Diamond (c).

Hope it helps!

Analysis: In the junior high school stage, it can be understood that the substances directly composed of atoms are all metal elements, all rare gas elements, and non-metal solid elements; Substances directly composed of molecules are non-metallic gaseous elementals, non-metallic and non-metallic compounds; The substances that are directly constituted by the decorated group are hollowing compounds containing metal elements.

Answer: It is made up of molecules (fill in the serial number.)

It is directly constituted by atoms

There are 3 types of substances that are made up of atoms:

1.Metallic elements (Fe, Cu, etc.) 2Noble gas elements.

S, C, and P.

There are two types of substances composed of ions.

1.Metal + Non-Metal (Marketing NACL

mgo, etc.) 2Metal + atomic clusters (Na2CO3, etc.) are basically composed of molecules, except for the five types of trillions and Zheng groups.

Carbon dioxide; neon; Helium; Iron; Where to accompany the water; Silicon; Diamond.

It is made up of molecules (fill in the serial number).

The hall silver that is directly composed of the atom Li Fu stupid is.

Analysis: In the junior high school stage, it can be understood that the substances directly composed of atoms are all metal elements, all rare gas elements, and non-metal solid elements; Substances directly composed of molecules are non-metallic gaseous elementals, non-metallic and non-metallic compounds; Substances that are directly constituted by ions are compounds that contain metallic elements.

Answer: It is made up of molecules (fill in the serial number.)

It is directly constituted by atoms

Among the gases learned in junior high school, except for noble gases, which are made up of atoms, gases are made up of molecules.

Generally, non-metal oxides are composed of molecules, and common acids are composed of molecules, such as atoms in the middle stage: metals, noble gases, diamonds, graphite, and silicon.

Carbon dioxide; neon; Helium; Iron; Water; Silicon; Diamond.

It is made up of molecules (fill in the serial number).

It is directly constituted by atoms

The molecules are: carbon dioxide (CO2); neon gas (NE monoatomic molecule); helium (HE monoatomic molecule); Water (H2O) is directly composed of atoms and is: iron (Fe); Silicon (Si); Diamond (c).Hope it helps!