Group (periodic table)

The periodic table is a chart that organizes elements (the tiny building blocks of everything in the universe) by their properties. Elements are arranged from left to right and from top to bottom in the form of a grid. Each element is placed in a specific box and these boxes are organized into larger groups called periods and families. Periods are the horizontal rows, and families are the vertical columns. Some elements are grouped together because they share similar properties, like the way they react with other elements. Knowing the periodic table can help you understand how different elements work together to form the world around us.