Which picture above represents a mixture of elements?

Covalent network solids typically have melting points and boiling points. the chemical formula of a network solid indicates in the molecule.

How are elements arranged in a periodic table

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