4. Pure silicon is chemically classified as a metalloid because silicon A) is malleable and ductile
B) is an excellent conductor of heat and electricity
C) exhibits metallic and nonmetallic properties D) none of the above

answer: you could do some invislibe ink.

explanation: i will tell you how to if u answer my question.

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.