Question

Ответить на вопросы: 1 What is called a molecule? 2 Is a molecule visible to the human eye? 3 What is the atom composed by? 4What do we call the smallest particles of the atom?

Answer 1

Ответ:

A molecule is an electrically neutral group of two or more atoms held together by chemical bonds.

No, we can't see them with the naked eye.

The atom is consists of the nucleus and electrons. The nucleus consists of protons and neutrons.

Most often when we say the smallest particles, we mean electrons, protons and neutrons.

Answer 2

1. What is called a molecule? A molecule is a group of two or more atoms bonded together through chemical bonds. These atoms can be of the same element (as in the case of diatomic molecules like O2 or N2) or different elements (as in the case of water, H2O, which consists of two hydrogen atoms and one oxygen atom). Molecules are the smallest units of a chemical compound that retains the chemical properties of that compound. 2. Is a molecule visible to the human eye? Most molecules are not visible to the human eye because they are incredibly small. They are typically on the scale of angstroms (Å), which is one ten-billionth of a meter. This is far smaller than what the human eye can detect. To put it into perspective, a typical molecule is composed of atoms, and individual atoms are also far too small to be seen with the naked eye. However, there are some exceptions, such as certain large molecules or aggregates of molecules, like some biological macromolecules (e.g., DNA or proteins), that can be visible with the aid of special microscopes. 3. What is the atom composed of? Atoms are composed of three fundamental subatomic particles: - Protons: Positively charged particles found in the nucleus of the atom. - Neutrons: Particles with no electrical charge (neutral) also located in the nucleus. - Electrons: Negatively charged particles that orbit the nucleus in electron shells or energy levels. The protons and neutrons are located in the nucleus at the center of the atom, while the electrons move in various energy levels or orbitals around the nucleus. 4. What do we call the smallest particles of the atom? The smallest particles of an atom are called "subatomic particles." These subatomic particles include protons, neutrons, and electrons. Protons and neutrons are relatively heavy compared to electrons and are located in the nucleus of the atom. Electrons, on the other hand, are much lighter and orbit the nucleus in specific energy levels or electron shells. These subatomic particles are the building blocks of all matter and play a crucial role in determining the chemical properties and behavior of atoms and molecules.