In a lewis structure for carbon tetrachloride (ccl4), which of the following is the central atom?
carbon
chlorine
iodine

4. absorption has the highest risk of overdose due to increased potency. a. rectal b. oral c. transdermal d. intranasal

Which characteristics can be used to differentiate star systems? check all that apply.

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.