chem

what is the prefix for five in naming covalent compounds?

• penta

• tetra

• mono

• di

• carbon chloride

• carbon tetrachloride

• carbon dichloride

• chloride carbon

a pure substance that cannot be broken down into other substances by chemical or physical means

• compound

• mixture

• elements

• molecules

which of these is an compound?

• aluminum

• carbon dioxide

• nitrogen

• cobalt

which of these is a element?

• salt NaCl

• water H2O

• oxygen O2

• carbon dioxide CO2

decantation means

• decantation is used to separate soluble solids from liquid

• two immiscible liquids separate by this process

• decantation is the process of separating insoluble solids from liquid

• decantation is the process of separating solids and solids

how to separate soluble sugar from water?

• decantation

• evaporation

• sedimentation

• sieving

what do we do first in separating sand from sea water?

• decantation

• filtration

• evaporation

• distillation

the liquids collected after distillation process is called

• filtrate

• solutes

• solution

• distillate

distillation is a process in which liquid mixture should be

• filtered

• boiled till vapor comes and then condensed back to liquid

• evaporate

• dried small