Who first arranged the elements according to atomic mass and noticed a periodic recurrence of their physical and chemical properties?
a. henry moseley
b. antoine lavoisier
c. john dalton
d. dmitri mendeleev

The discovery that the universe appears to be expanding led to a widely accepted theory called a.) the big bang theory b.) the doppler effect c.) hubble’s law d.) solar nebular theory e.) the seyfert theory

Which of the following is not a characteristic of s waves? a. travel slower than p waves. b. cannot be detected in locations more than 105° from an earthquake’s epicenter. c. travel through solids and liquids. d. only affect coastal regions.

In a series circuit the __ is the same at every point