Final answer:
A pure chemical substance formed by the combination of different elements is called a compound.
Step-by-step explanation:
A pure chemical substance formed by the combination of different elements is called a compound.
Compounds are substances that contain two or more elements chemically combined in a fixed proportion. They have a constant composition and properties that are consistent throughout the sample.
For example, water (H2O) is a compound composed of the elements hydrogen (H) and oxygen (O), and table sugar (sucrose, C12H22O11) is another example of a compound.