Atomic Number and Mass Number of Elements: Atoms are the building blocks of matter. They are responsible for the format of all living and non-living things. Understanding their molecular structure and ...

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 ...

When you add, subtract, multiply or divide mass in grams and kilograms, sometimes you need to convert the measurements so that they are in the same unit. To convert from kilograms to grams you ...