Which is untrue about water?
A. It is non-polar molecule
B. It has strong surface tension
C. It is the only natural substance to exist as a solid, liquid, and gas at normal temperature on earth
D. It has a solid form that is less dense than its liquid form
E. Other?

The skeletal system performs a variety of functions that are crucial to maintaining life processes. what function is performed in the bone marrow, but not in the ossified bones of the skeleton? a oxygen transportation c mineral storage b. muscle attachment d red blood cell production

Electrons are extremely important to what area of technology? a) anti-aging research b) household product development c) electronics d) drug discovery

An alloy contains 66 g of pure zinc. what is the percentage of zinc in the alloy? express your answer to two significant figures and include the appropriate units.