Which is NOT a reason that silicon is unsuitable as a building block for life compared to carbon?
A) siliconsilicon bonds are much weaker than carboncarbon bonds
B) silicon does not form multiple bonds with itself, limiting the complexity of molecules it can form
C) silicon does not bond with many other elements
D) silicon dioxide is a high melting point solid and, hence, cannot be used to transfer silicon atoms like gaseous carbon dioxide can be used to transport carbon atoms
Question 2
A sprinter named Ben has challenged a beam of light to a race in the 100-meter dash. The race is held in a stadium full of spectators. At the start signal, a laser beam is turned on at the start line, pointed down the track.
At the same instant, Ben bursts out of the starting blocks at 99 of the speed of light (0.99c). According to the spectators watching in the stands, what happens? (Assume they could somehow watch a slow-motion replay to see what occurred.) A) The light beam wins the race, but barelyit is going 1 of the speed of light faster than him.
B) The light beam instantly finishes the race, before Ben even has a chance to start.
C) The light beam wins the race by a large margin because it is going faster than him by the full speed of light.
D) Ben beats the light beam to the finish line, becoming a hero.
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