Periodic Table

a pure substance which cannot be broken down any further is called ...

• element

• substance

• compound

• ion

The version of the Periodic Table that we use today was first proposed by Dmitri Ivanovich Mendeleev in ...

• 1872

• 1873

• 1972

• 1973

Which one unique labels that we can use to identify elements is ...

• atomic number

• mass number

• proton

• neutron

Column at periodic table is called ...

• group

• periode

Below is NOT CORRECT rule when using chemical symbols ...

• all elements have symbols from their Latin names

• every elements has unique symbols

• the first letter of symbol is always a capital letter

• the second letter is a small letter

Symbol of Silicon is ...

• Si

• S

• Sl

• Sn

Pb is symbol for ...

• Lead

• Potassium

• Phosphorus

• Platina

Below are symbol of gold, silver, and sodium ...

• Au, Ag, and Na

• Ge, S, and S

• Au, S, and Na

• Ga, Ag, and Na

Below the right charge of proton, neutron, electron are ...

• positive, neutral, negative

• neutral, negative, positive

• negative, positive, neutral

the atomic number of an element refers to how many ...

• proton

• neutron

• electron

• mass