Science Concepts Chemistry

Knowledge and Skills Statement

Science concepts. The student understands how matter is accounted for in chemical substance.
Glossary terms and definitions are consistent across kindergarten through high school in the TEKS Guide. The definitions are intended to give educators a common understanding of the terms regardless of what grade level they teach. Glossary definitions are not intended for use with students.

any material that has a definite chemical composition

substance that occupies space, has mass, and is composed of microscopic particles