what family and group nitrogen and phosphorus in?? I know they are both non-metals, just want to know the name, thanks

Which scenario is most similar to the type of collision that gas particles have according to kinetic molecular theory

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of

In a ball-and-stick molecular model, what do the sticks represent?