Chemistry

Who suggested the idea of representing elements with symbols

• John Dalton

• James Chadwick

• Berzelius

• William crookes

A symbol represents a short form of a/an ______________

• Atom

• Molecule

• Element

• Compound

Which compound has the formula C3H8

• Propane

• Ethanol

• Butane

• Methane

Which one is not a example of hydrocarbon

• Methane

• Ethanol

• Propane

• Butane

Blue vitriol is a pentahydrate

• TRUE

• FALSE

Sulphur in iron [ll] sulphide is insoluble in which solvent

• H2O

• KBr

• H2SO4

• CS2

Fe + ________ -----> FeCl2 + H2

• 2HCl

• 4HCl

• HCl

• 4Cl

What is the valency of nitrogen in N2O

• -2

• +1

• 4

• -3

What is the molecular weight of sulphur dioxide (SO2)

• 46 a.m.u

• 60 a.m.u

• 64 a.m.u

Name three metals whose symbols are derived from their Latin names

• Potassium

• Lead

• Lithium

• Silver