Periodic Table Discrete Chemistry

How are elements organized in the periodic table ?

• Alphabetically

• Based on physical and chemical properties

• Increasing number of electrons

• Most reactive to least reactive

Tags

NGSS.HS-PS1-1

Most elements on the periodic table are classified as ____________.

• Gases

• Metalloids

• Metals

• Nonmetals

Tags

NGSS.HS-PS1-1

Groups on the periodic table are arranged...

• Vertically

• Horizontally

• Diagonally from bottom right corner

• Diagonally from top right corner

Which accurately describes nonmetals?

• Poor conductors of electricity

• Often used in computer parts

• Both malleable and ductile

• Both dull and brittle

Tags

NGSS.HS-PS1-1

What is the chemical symbol for Sodium?

• S

• So

• Na

• Ca

How many neutrons does Chlorine have?

• 17

• 36

• 35

• 18

Tags

NGSS.MS-PS1-1

How many periods are there in the periodic table?

• 7

• 9

• 10

• 18

Tags

NGSS.HS-PS1-1

Each horizontal row on the periodic table is called a what?

• Group

• Row

• Period

• Family

Who arranged the periodic table of elements by the atomic mass (or mass number)?

• Democritus

• John Dalton

• Henry Moseley

• Dmitri Mendeleev

Identify the unknown atom.

• Flourine

• Beryllium

• Boron

• Helium

Tags

NGSS.HS-PS1-1