Chemistry holiday homework

Method used when the components are of different sizes?

• Winnowing

• Handpicking

• Sieving

• Sublimation

Elements are (a)  

Method used to seperate mixture of ethanol and water?

• Distillation

• Fractinal distillation

Boiling point of argon?

(a)  

How are elements classified?

• Periodic table

• Divide them into metal and non meta

• Properties possessed by the element

• All of the above

Endothermic reaction is (a)   process

What is redox reaction ?

• Electron transfer

• Proton transfer

Mercury show (a)  

Molecular formula of ammonium phosphate?

• NH4Po4

• NH4(PO4)

• (NH4)3PO4

• None

Chromatography means separating (a)