Jerome and a classmate are conducting an experiment. Which piece of safety equipment is least likely to be at Jerome’s lab station?

Of the groups of elements below, which are most likely to gain electrons to become anions? a. alkali metal b. boron group c. halogen d. transition metal

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

Which fact represents evidence for the big bang theory?