Periodic Table Properties

True or False: The reactivity of metals tends to decrease as you move from left to right across the periodic table.

• True

• False

The horizontal row on the periodic table is called a

• group

• family

• period

• atomic number

Most of the elements on the periodic table are classified as _____.

• Metals

• Nonmetals

• Metalloids

• Periods

Tags

NGSS.MS-PS1-1

This group of elements sit along a stair step line on the periodic table and have properties of both metals and nonmetals. _________________________

• luster

• metals

• nonmetals

• metalloids

Which best describes elements found in a group of the periodic table?

• the elements have similar chemical properties

• the elements have the same atomic number

• the elements have the same size atoms

• the elements are naturally found in the same state

This element is a (a)   from Group ​ (b)   which are called the ​ (c)   . It is ​ (d)   and has ​ (e)   protons (and likely the same number of electrons)

• nonmetal

• 18

• Noble Gasses

• inactive/inert

• 54

• 5

Tags

NGSS.MS-PS1-1

Match these for Iron

• Atomic Mass (protons + neutrons)

• 55.845

• Common Name

• Fe

• Symbol

• 26

• Atomic Number (protons)

• Iron

Fluorine would have properties most like​ (a)  

• iodine

• potassium

• oxygen

• neon

The Modern Periodic Table of Elements is arranged by

• atomic mass

• atomic number

• valence electrons

• number of isotopes

The vertical (up and down) columns in the Periodic Table are called

• groups

• towers

• periods

• atomic numbers