Mass is a fundamental property of matter that represents the amount of substance in an object. It is measured in kilograms (kg) and is different from weight, which depends on the force of gravity ...

Mass percent, also known as “mass composition” or “percentage by mass,” is an important concept in chemistry, physics, and engineering. It helps determine the concentration of a specific element ...

The concept of the mole to use determine relative amounts of reactants is explored. Mole/Mole and Mole/Mass Stoichiometry Problems: The concept of the mole to use determine relative amounts of ...

Students learn how to calculate the percent yield for a chemical reaction. Mass/Mass Stoichiometry: Problems and Percent Yield: Students learn how to calculate the percent yield for a chemical ...

This video is an interactive lesson in calculating an atom’s mass and atomic number. Atoms consist of a nucleus containing protons and neutrons, surrounded by electrons in shells. The numbers of ...