Need help ASAP... (Question from 'Observing the Bunsen Burner'). "The match head is supposed to stay unlit. What does this tell you about the temperature at the top of the burner , just inside the inner blue cone?".

Which of these is not an example of chemical weathering? a. iron-rich mineral rusting b. feldspar turning into clay c. limestone reacting with acid d. granite breaking up into sand

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both

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