What are the substances that are directly made up of atoms

If it is said to be directly composed of atoms of a single element, it is noble gases, metal elements, diamond, graphite and silicon.

If only literally it is made up of atoms. Except for ionic crystals, they are all directly composed of atoms.

It is made up of atoms and must be elemental.

1. A small number of non-metallic elements such as carbon, silicon, etc.

2. Metal elements such as iron, copper, mercury, etc.

3. Rare gas elements such as helium, neon, argon, etc.

Molecules are made up of both elemental and compound compounds.

1. Most non-metallic elements such as hydrogen, oxygen, nitrogen, sulfur, phosphorus, etc.

2. Covalent compounds (non-metal + non-metal) such as water, carbon dioxide, ammonia, ethanol, etc.

That's ......Metal ions are a few or more electrons than neutral atoms, and there are no bonds between ions and ions, which are still atoms ...... natureSo both statements are fine, and the one in the counseling book is more accurate.

Molecular crystals such as sulfur and phosphorus are made up of atoms that first form a certain molecule through covalent bonds, and then the molecules are piled up randomly, as if small pieces of wood are glued into blocks first, and then the blocks are piled up into a hill.

Atomic crystals such as silicon dioxide, silicon, and diamond are made up of direct covalent bonds of atoms, like gluing all the small pieces of wood into a whole in a certain order.

Non-metallic elementals are made up of atoms" is certainly problematic with this statement

Addendum: Even non-metallic solids are not all atomic. For example, phosphorus, sulfur, iodine, red selenium, etc. mentioned above. So your junior high school teacher is wrong.

None of the EA2x or the meat belly are wrong.

Hello! I know of silica, elemental silicon, diamond, silicon carbide, they are all atomic crystals.

Hope, thank you!

The previous statement is true, any matter on Earth is made of atoms. As for silicon being a solid non-metallic element, it's very simple, first of all, silicon is made up of an elemental silicon (Si), called elemental.

Elemental silicon, diamond, silicon carbide, they are all atomic crystals.

<> substances that are directly constituted by atoms are mainly of the following categories:

1. Metals: such as gold, silver, copper, iron, magnesium, mercury, etc.;

2. Non-metallic solids: such as carbon, silicon, etc.;

3. Noble gases: such as helium, neon, argon, krypton, xenon, etc.;

4. Atomic crystals directly composed of atoms through covalent bonds: such as silicon dioxide, silicon, diamond, silicon carbide, etc.

Substances composed of atoms include a few non-metallic elements, such as carbon, silicon, etc., and metallic elements, such as iron, copper, etc. There are also some noble gas elements.

Introduction

Atoms are the smallest particles that cannot be redivided in a chemical reaction. A positive atom contains a dense nucleus and a number of electrons that are negatively charged around the nucleus. Whereas, the nucleus of a negative atom is negatively charged, and the surrounding negative electrons are positively charged.

The nucleus of a positive atom is made up of positively charged protons and electrically neutral neutrons.

The antiproton in the nucleus of the negative atom becomes negatively charged, thus making the nucleus of the negative atom negatively charged. When the number of protons is the same as the number of electrons, the atom is electrically neutral; Otherwise, it is a positively or negatively charged ion.

Depending on the number of protons and neutrons, the type of atom is different: the number of protons determines which element the atom belongs to, while the number of neutrons determines which isotope the atom is of that element. Atoms make up molecules, and the same kind of charges repel each other in the molecules that make up the substance, and different kinds of charges attract each other.

There are three types of substances directly composed of atoms: metals, non-metallic solids, and rare gases. Metals such as gold, silver, copper, iron, magnesium, mercury, etc.

Non-metallic solids, such as carbon, silicon, etc., rare gases: such as helium, neon, argon, krypton, xenon, etc. Atomic crystals directly composed of atoms through covalent bonds, such as silicon dioxide, silicon, diamond, silicon carbide, etc.

Characteristics of atomic composition

atoms, the smallest particles in chemical change. An atom is also a type of particle that makes up matter. For example, a small number of non-metallic elements, diamond, graphite, etc., metal elements, such as iron, mercury, etc., rare gases, etc.

The distribution of the electron shell outside the nucleus of the atom, and the hierarchical arrangement of electrons outside the nucleus: no more than 2 in the first shell and no more than 8 in the second shell. The outermost layer does not exceed 8.

The maximum number of electrons that can be accommodated in each layer is 2n2, and n represents the number of electron layers, that is, the first layer does not exceed 2, the second layer does not exceed 8, and the third layer does not exceed 18. The number of electrons in the outermost shell does not exceed 8, and when there is only 1 electron layer, a maximum of 2 electrons can be accommodated.

The atoms are also constantly moving, and although the atoms are small, they have a certain mass. The idea of the atom was introduced as far back as the 5th century BC. But there was no scientific experiment to support it, until the beginning of the 19th century, when the chemist Dalton proposed a scientific atomic theory in 1803, based on experimental facts and strict logical deductions.

1. Elemental metals.

1. Iron Fe.

2. Hg hg.

2. Rare gas element.

1. Helium.

2. Neon.

3. Most solid non-metals.

1. Sulfur carbon C.

3. Phosphorus P (exception iodine I2 is composed of molecules).

Common atomic objects include carbon black, graphite, diamond, and various metal elements, all of which are atomic crystals.

<> substances that are directly constituted by atoms are mainly of the following categories:

1) Metals. Such as gold, silver, copper, iron, magnesium, etc.

2) Non-metallic solids. Such as sulfur, carbon, silicon, phosphorus, etc.

3) Noble gases. Such as helium, neon, argon, krypton, xenon, etc.

Metallic substances (e.g. Fe, Cu, Ag) and noble gases (e.g. He, Ne, Ar, etc.).