The scientist, in his book "A New System of Chemical Philosophy" made the following claims: An element is a . The atoms of one element are . The atoms of elements combine in small whole number ratios to .

Which of the following represents the ester functional group? a. -coo- b. -cho c. -cooh d. c=o

What are several ways to reduce the effect of friction

Assignment directions: pick one of the following chemists and perform a bit of research on him/her. answer the following questions. alice hamilton             rosalind franklin marie curie             gertrude b. elion ada yonath             henry cavendish robert boyle             antoine lavoisier mario j. molina             svante arrhenius