science

3. Set or established in a stable manner; not subject to change.
4. Small units that make up matter
6. Relating to substances and processes involved in chemistry
8. Representing or showing a system using diagrams, visuals, or other methods
10. Identifying or acknowledging the existence of something.
12. The relationship between two quantities, often expressed in terms of a fraction.
13. Substances composed of two or more elements chemically combined in a fixed ratio.
14. Combinations of symbols that show the elements present in a compound and the ratio of their atoms

1. Notation that indicates the type and number of atoms present in a molecule of a substance.
2. Providing information or reasons to clarify a concept.
5. Displayed or depicted in a specific way.
7. Substances that consist of only one type of atom,
8. Substances composed of two or more elements or compounds physically mixed together
9. Representations used to stand for elements
11. How particles are organized or positioned relative to one another in a substance.