What can be observed only by observing its effects on gravity

Is this a single replacement reaction or there is no

The agent of mechanical weathering in which rock is worn away by the grinding action of other rock particles is call

An atom of lithium (li) and an atom of chlorine (cl) engage in a chemical reaction. which correctly describes the structure of the resulting chemical compound? hint: consider the class of each element. the chemical compound will have a network structure. the chemical compound will have triple bonds. the chemical compound will have a ball-and-stick structure. the chemical compound will have double bonds.