Which of the following is not a reason to use an alloy instead of a pure metal? brass is more malleable that pure copper. sterling silver is stronger than pure silver. cast iron is more brittle than pure iron. bronze is tougher than pure copper.

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

Word equation for k+ h2o yield koh + h2

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)