C2H6 + Cl* => C2H5* + HCl

Compare and contrast physical changes with chemical changes.

Is a pencil falling to the floor anon contact force, a force, or a contact force

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.