Developing the Periodic Table

The Periodic Table

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Very First Periodic Table

Dimitri Mendeleev - Designed the first periodic table. He put elements in groups by similar properties and then placed them in order by increasing mass. 

Henry Mosely

• Came up with the current periodic table format

• Elements are still grouped by properties

• Are placed in order by increasing atomic number

Poll

Which of the following is false about the periodic table.

• Mendeleev came up with the first periodic table

• The first periodic table was arranged by atomic number

• The current periodic table is arranged by atomic number

• Elements are grouped based on their chemical properties

Multiple Choice

Which of the following would have simlar properties to Helium

• Neon

• Oxygen

• Lithium

• Carbon

Multiple Choice

Which of the following groups of elements has similar chemical properties

• Na, Mg, O

• O, C, Cl

• Cl, F, Br

• Xe, H, Si

Multiple Choice

The majority of elements on the periodic table are classified as.....

• Metals

• Nonmetals

• Metalloids

Multiple Choice

Which of the following is a metalloid

• Si

• N

• Na

• He

Properties Of Metals, Nonmetals, and Metalloids

• Metals have luster, are malleable, are ductile, good conductors, mostly solids

• Nonmetals are brittle, mostly gases, they are insulators or poor conductors

• Metalloids have properties of both - for example semi conductors

Multiple Select

Choose all of the properties that relate to metals

• Luster

• Dull

• Malleable

• Brittle

• Good Conductors

Multiple Choice

How many valence electrons would Magnesium have?

• 1

• 2

• 7

• 8

Who Am I?????

Using the notes, clues, and a periodic table determine "who" each of the unknown elements are. When typing in an elemet use the atomic symbol, if it is a family use the full name that was provided in todays notes.

Fill in the Blanks

I am a metal

I am in group 2

I am in period 6

I am …

Fill in the Blanks

I am a nonmetal

I am in group 16

I am in period 3

I am …

Fill in the Blanks

My family is mostly man-made

The elements in my family are radioactive

My family is…

Fill in the Blanks

I am a semi-conductor…so like a metal but also like a non-metal

I am a metalloid

I have 14 protons.

I am …

Fill in the Blanks

I am explosive in water

I have the most protons in my family

I am …

Fill in the Blanks

I am a one of the most reactive NONmetals.

I have the fewest protons.

I am …

Fill in the Blanks

I am in the same group with the alkali metals

I am a gas

I am

Fill in the Blanks

I am one of the unreactive gases

I am often found in lights in Vegas

I am …