periodic table
History of the Periodic Table
organizing the periodic table
Atomic theory
Important Figures in Atomic Theory
100

the symbol for oxygen

O

100

Published the table of elements by increasing atomic mass; known as the “father of the modern periodic table”

Who was Dimitri Mendeleev

100

Group 1 in the periodic table is called _____ _______

Alkali metals

100

The smallest particle of an element

Atom

100

This figure came up with the original atomic theory

Who is John Dalton 

200

the element that Mg represents

Magnesium

200

Published his own table of elements organized by increasing atomic mass

Who is Lothar Meyer

200

Metals in groups 3-12

Transition metals

200

The part of the atom that was discovered first

Electron

200

This figure founded the Law of Conservation of Mass

Antoine Lavoiser

300

The symbol for lead

Pb

300

Chemists used the ________ of elements to sort them into groups

Properties

300

The order of the blocks in the periodic table

s-block, p-block, d-block, f-block

300

The law that states that mass is neither created nor destroyed during chemical or physical reactions

Law of Conservation of Mass

300

This figure came up with the plum pudding model

Who is J.J. Thompson

400

The element that As represents

Arsenic

400

Came up with the “Law of Octaves“ which stated that elements should be arranged in octaves because they repeated every 8th element

Who is John Newlands

400

The largest block of the periodic table

d-block

400

The major difference between Daltons’s Atomic Theory and the Modern Atomic Theory

Dalton says atoms are indivisible whereas the Modern atomic Theory states atoms can be divided fRutherford

400

This figure experimented with the Gold Foil Experiment

Who is Ernest Rutherford

500

The symbol for Mercury

Hg

500

Classified some elements into groups of three, which he called triads

Who is Johann Dobereiner

500
Name of the elements that border the stair step line-2 sides

Metaloids

500

Measurement of Atomic Mass 

AMU

500

This figure is connected with the Law of Definite Proportions

Who is Joseph Proust