chemicals and chemical reactions practice test\nthis substance consists of two or more elements in a fixed…

chemicals and chemical reactions practice test\nthis substance consists of two or more elements in a fixed mass ratio.\n○ element\n○ compound\n○ mixture\n○ pure substance

chemicals and chemical reactions practice test\nthis substance consists of two or more elements in a fixed mass ratio.\n○ element\n○ compound\n○ mixture\n○ pure substance

Answer

Brief Explanations:

A compound is defined as a substance made up of two or more elements combined in a fixed mass - ratio. An element is a pure substance made of only one type of atom. A mixture is a combination of two or more substances where the substances retain their individual properties and are not combined in a fixed ratio. A pure substance can be either an element or a compound, but the description specifically points to the fixed - mass ratio characteristic of a compound.

Answer:

compound