Decide which of the substances listed can form hydrogen bonds. (Select all that apply.) HF NH3 H2O H2 CH4 H2O2 Changed: Your submitted answer was incorrect. Your current answer has not been submitted.

List four observations that indicate that a chemical reaction may be taking place

Word equation for k+ h2o yield koh + h2

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