Flame Experiments 12345

What is the Chemical formula of ammonium dichromate?

• (NH3)2Cr2O7

• (NH4)2Cr2O7

• NH3Cr2O7

• NH4Cr2O7

What is the chemisal formula of the green compound that is formed when ammonium dichromate is burned?

• NO2

• H2O

• Cr2O3

• CrO

Why are Pharaoh's Snakes dangerous to do? (2 answers)

• Because mercury compounds are released during this reaction

• Because of amount of heat produced during reaction

• Because of possibility of explosion during that experiment

• Because of use of mercuric rhodanide

Is manganese heptoxide stable compound?

• yes

• no

Wich element reacts violently with Aluminium (Al)

• Br2

• H2SO4

• Fe

• HCl

Wich Ion makes Green Flame?

• BO3 3-

• Cl -

• Sr 2+

• Na +

What solvent is most commonly used to make coloured flames?

• CH3OH

• C2H5OH

• C3H7OH

• C4H9OH

Wich of these doesn't change flame color?

• Li +

• Cu 2+

• H +

• Cs +