Periodic Table-Honors Chemistry 2019-2020

Mendeleev is credited with developing the first successful...

• Periodic Table

• Method for determining atomic number

• Test for radioactivity

• Use of X rays

Tags

NGSS.HS-PS1-1

Mendeleev noticed that properties of elements usually repeated at regular intervals when the elements were arranged in order of increasing

• Atomic Number

• Reactivity

• Density

• Atomic Number

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Henry Moseley's work led to the modern periodic table which is in order of increasing...

• Atomic Mass

• Density

• Radio Activity

• Atomic Number

Elements on the Periodic Table are arranged in order of increasing

• Atomic Mass

• Atomic Number

• Neutrons

• Valence Electrons

More than two thirds of the know elements are classified as

• Metals

• Non-Metals

• Metalloids

• Noble Gases

Which statement explains why sulfur is classified as a Group 16 element

• A sulfur atom has 6 valence electrons

• Sulfur is a yellow solid at STP

• A sulfur atom has 16 neutrons

• Sulfur reacts with most metals

Tags

NGSS.HS-PS1-1

Which statement is true concerning the properties of the elements in any one period of the Periodic Table

• They are determined by the # of neutrons

• They are determined by the # of electrons in the first shell

• They change in a generally systematic manner

• They change in a random, unpredictable manner

Tags

NGSS.HS-PS1-1

Which Symbol represents an alkaline Earth element

• Na

• Mg

• Ne

• Ag

Which of the following elements is a halogen?

• Chlorine

• Sodium

• Neon

• Calcium

Which period contains three elements which exist as diatomic molecules at STP:

• Period 1

• Period 2

• Period 3

• Period 4