Diana has just completed a reaction that had a chemical change. Which two changes could be evidence of this change?

color and odor
color and shape
odor and density
shape and density

Provide a stepwise curved arrow mechanism that fully explains the outcome of the reaction shown below. oh нао* heat он

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled

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