What type of chemical reaction is illustrated in the following example? .se
Sr(s) + H2O(l) → Sr(OH)2(aq) + H2(g)

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

Aradio signal from a gps satellite take only about 0.067 seconds to reach a gps reciever. if the speed of light is about 300,000km/s, then approximately how far away is the reciever from from the satellite?

An object becomes electrically charged when: electrons are created in it electrons from it are destroyed electrons are transferred to it protons from it are destroyed protons are created in it