DO NOW

 What is another name for a column in the periodic table?  What is another name for a row in the periodic table? What can you infer about the properties of two elements in the same group?  How does the atomic number change as you move from right to left along a period?  How are the melting and boiling points for beryllium (Be) and magnesium (Mg) likely to be related? Explain your answer.  

Group

Period

The properties are similar

It decreases

Melting and boiling points for those two elements are probably similar because they belong to the same group.

METALS, NONMETALS AND METALLOIDS

Left

middle

shiny

electricity

METALS, NONMETALS AND METALLOIDS

Left

middle

shiny

electricity

rightheat

electricity

METALS, NONMETALS AND METALLOIDS

Left

middle

shiny

electricity

rightheat

electricity

metals

nonmetals metals

nonmetals