Which description of salt is a chemical property? No combustion

Odourless

salty taste

solid does not conduct electricity

Compare and contrast physical changes with chemical changes.

Indicate whether the specified alkyl halides will form primarily substitution products, only elimination products, both substitution and elimination products, or no products when they react with sodium methoxide. 1-bromobutane 1-bromo-2-methylpropane 2-bromobutane 2-bromo-2-methylpropane

Ineed to find the answer of this question because i dont understand it