3.2 - Organizing the Elements

True or False: The elements in the current periodic table are arranged in order of atomic mass.

• True

• False

Who created the first periodic table?

• Mendel

• Mendeleev

• Bohr

• Dalton

What is the atomic number of this element?

• 8

• 15.999

• 16.8

• 24

Tags

NGSS.MS-PS1-1

What is a column of elements on the periodic table called?

• period

• group

• row

• column

What is a row of elements on the periodic table called?

• period

• group

• row

• column

A(n) ____ is an arrangement of elements in columns, based on a set of properties that repeat from row to row.

• chemical formula

• Periodic table

• chemical reaction

• chemical chart

What is the atomic mass of this element?

• Xe

• 54

• 45

• 131.293

What is the atomic number?

• 131.293

• 54

• 45

• Xe

Tags

NGSS.MS-PS1-1

What does the atomic number tell you?

• How much an atom of the element weighs

• How many protons are in the atom of the element

• How many neutrons are in a molecule

• The name of the element

How can the properties of an element be predicted?

• By where they are found on earth

• By the scientist who discovered them

• By their discovery date

• By their location on the periodic table