1. Draw a rectangle with the following dimensions: length is 8ft, width is 3ft. Point A is in the lower left corner, B the lower right corner, C the upper right corner, and D the upper left corner. Susan
walks from point A to B. Then she turns and walks from point B to C. Find the distance and
displacement

Darla claims that the first periodic table developed by mendeleev was not completely accurate, so it is not useful at all. harmony argues that it establish the periodic table we use today, making it more credible. who is correct and why? darla is correct, because a model that has any mistakes should be thrown out. darla is correct, because a good model would not need to change. harmony is correct, because mendeleev’s model had all of the information correct in the first version. harmony is correct, because mendeleev’s model made predictions that came true.

As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.

What must be in balance for temperatures to remain constant?