a substance made of two or more elements chemically combined in a set ratio or proportion is called what
a compound
A substance made of two or more elements chemically combined in a set ratio or proportion is called a compound.
To determine this, you can follow these steps:
1. Identify the elements present in the substance. Each element is represented by its chemical symbol (e.g., H for hydrogen, O for oxygen, Na for sodium, Cl for chlorine, etc.).
2. Check if the elements are combined together using a chemical bond. Chemical bonding occurs when atoms of different elements share, donate, or receive electrons to form stable compounds.
3. Confirm that the elements are combined in a set ratio or proportion. This means that the relative number of atoms of each element in the compound is always the same.
If all these criteria are met, then the substance is considered a compound.