Question

Which of the following statements about atoms is true?

Atoms may be joined together in well-defined molecules.


Atoms may be arranged in repeating crystal patterns.


Various groups of atoms compose all known substances.

Answer 1

All of the provided statements about atoms are true, highlighting that atoms can bond to form molecules, arrange into repeating crystal patterns, and are the basic units composing all known substances.

Step-by-step explanation:

Which of the following statements about atoms is true?

• Atoms may be joined together in well-defined molecules.
• Atoms may be arranged in repeating crystal patterns.
• Various groups of atoms compose all known substances.

All of these statements are true. At the most basic level, all matter is composed of atoms. Atoms can bond together to form molecules, which are the smallest unit of a chemical compound that retains its chemical properties. Moreover, atoms can arrange themselves in regular patterns to form crystalline solids, be it through ionic, covalent, or metallic bonding. Such arrangements do not typically result in the formation of molecules, especially in the case of ionic crystals, like salts, and covalent crystals like diamond or graphene; instead, they give rise to repeating unit cells that extend throughout the material. Additionally, atoms are the building blocks for all known substances, whether they are found as individual atoms, as part of molecules, or arranged in crystal lattices, contributing to the diverse forms of matter we observe.

Answer 2

The atoms are grouped thus forming molecules. Each type of molecule is the combination of a certain number of atoms linked between them and in a specific way, whenever a molecule can contain atoms of different elements or of the same. And that in turn, Each atom retains its structural characteristics, beyond that they are part of different molecules because during the chemical reactions the atoms cannot be created or destroyed, but they are organized in a different way creating links between an atom and another.