Who was the first to state the concept of an atom? neils bohr john dalton ernest rutherford democritus

Why is the structure of molecule important to its function?

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.