Why does the flame go out on the Bunsen burner when the gas is turned off? (use the collision theory in your answer)

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

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false

Which activity describes an application of topographic maps? check all that apply. recreation, such as camping and hiking engineering, such as the construction of roads and buildings science, such as mapping stars in the sky business, such as analyzing population centers science, such as analyzing surface features