Identify each material as an element, a compound, a heterogeneous mixture, or a solution. a. equal portions of salt and sand placed in a beaker and shaken up b. a combination of beeswax dissolved in liquid hexane c. hydrogen peroxide, a substance composed of hydrogen and oxygen

How many ions that have a +1 charge will bond with an ion that has a -2 charge

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table

#7 how does the structure of amino acids allow them to form a polypeptide? each amino acid has an amino group and a carboxyl group. each amino acid has a hydrogen atom and a carboxyl group. each amino acid has a carboxyl group and an r group. each amino acid has an r group and a hydrogen atom.