Periodic Table of Elements PDF

Periodic Table of Element s Grade 8 Science Development of the Periodic Table of Elements ARISTOTLE 300 BC. believed in four elements (Air, water, earth and fire). Development of the Periodic Table of Elements ANTOINE LAVOISIER 178...

Periodic Table of Element s Grade 8 Science Development of the Periodic Table of Elements ARISTOTLE 300 BC. believed in four elements (Air, water, earth and fire). Development of the Periodic Table of Elements ANTOINE LAVOISIER 1789 group the elements into metals and non metals Development of the Periodic Table of Elements JOHAN WOLFGANG DӦBEREINER 1829 developed the Law of Triad Development of the Periodic Table of Elements JOHN NEWLANDS 1863 The first to arrange the elements into a periodic table with increasing order of atomic masses. He also developed the law of octaves. Development of the Periodic Table of Elements DMITRI MENDELEEVE 1869 Published the first periodic table. Development of the Periodic Table of Elements WILLIAM RAMSAY 1894 Discovered four gases and formed a new family, the Noble gases. Development of the Periodic Table of Elements HENRY MOSALEY 1913 Arranged the elements of the periodic table to increasing atomic number. Assessment: Answer the following questions. 1.What are the six noble gas of the periodic table? Assessment: Answer the following questions. 2. Who classified the known elements into 8 groups? a. Henry Mosley b. Aristotle c. John Newlands Assessment: Answer the following questions. 3. Who created the periodic table and how it is organized? a. William Ramsay; atomic number b. Dmitri Mendeleeve; atomic weight  1 P E 2 R 3 I 4 O 5 D 6 S 7 GROUPS S P D F