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

a formula giving the proportions of the elements present in a compound but not the actual numbers or arrangement of atoms

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

a formula giving the number of atoms of each of the elements present in one molecule of a specific compound

Research

Thamburaj, P. K. "A Known-to-Unknown Approach to Teach about Empirical and Molecular Formulas." Journal of Chemical Education 78, no. 7 (2001): 915-916. https://doi.org/10.1021/ed078p915

Summary:  Thamburaj presents an approach to teach empirical and molecular formulas. Most students who appear to be less than competent in solving chemistry problems rarely miss the correct answer if the problem is about money.