Write one paragraph explaining the history of the atom. be sure to include at least 3 key people along with the parts of the atom and at least one example of hurry!

Express the following number in scientific notation. 0.026890 =

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?