Periodic Table - History and Basics

Periodic Table - History and Basics

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Multiple Select

How did Mendeleev order his table? Choose all of the correct answers.

• by atomic number

• by atomic mass

• by properties

• by the number of neutrons

Multiple Choice

How did Mosley change the periodic table?

• he used the atomic number

• he used the mass number

• he used the number of neutrons

• he used the number of valence electrons

Multiple Choice

The period number tells us the

• number of valence electrons

• the group number

• the number of protons

• the number of energy levels

Multiple Choice

Elements with similar properties

• are in the same group

• are in the same period

• are in the same level

• have the same number of neutrons

Multiple Choice

The alkali metals are in

• group 1

• group 2

• group 17

• group 18

Multiple Select

The halogens are in group

• 1

• 2

• 17

• 18

Multiple Select

Metals are...

• lustrous

• dull

• good conductors

• poor conductors

• brittle

Multiple Choice

Which elements are found on the right side of The Periodic Table?

• Metals

• Nonmetals

• Metalloids

• Water

Multiple Choice

Which elements are found on the left to middle of The Periodic Table? 

• Metals

• Nonmetals

• Metalloids

• Candles

Multiple Choice

Silicon is a semiconductor and has properties of both metals and nonmetals. What type of element is Silicon? 

• Metal

• Nonmetal

• Metalloid

• Pretty

Multiple Choice

How would this element be classified?

• Metal

• Nonmetal

• Metalloid

• Metamorphic

Multiple Choice

Which element is least likely to conduct heat and electricity? 

• O

• Si

• Po

• Ca