Students will learn how to categorize matter as either pure substances or mixtures. Students will apply tests, based on physical properties of matter samples, to determine whether a mixture is ...

Some bishops had a legitimate concern that the term "substance" could be misunderstood to imply that God is of matter instead of pure Spirit. Whereas, other bishops did not like the precision of ...

According to these definitions, a chemical compound is merely a ‘hylotropic’ substance which remains constant in composition over a range of temperatures and pressures, within which it resists ...