States of Matter and Purity Quiz

Pure substances are elements or compounds made up of only one kind of entity, which cannot be broken down into simpler entities by chemical or physical methods and have a fixed composition.

An element is a substance that only contains one type or class of atom and cannot be altered through physical or chemical means to break down or create new substances.

Compounds are substances consisting of two or more different types of elements in a fixed ratio of its atoms, while mixtures are substances formed by physically mixing two or more substances.

<p>The majority of elements are metals, nonmetals, or metalloids.</p> Signup and view all the answers

<p>Pure substances typically only include one type of atom or molecule, are homogeneous in nature, have constant or uniform composition, and their boiling and melting points are constant.</p> Signup and view all the answers