PREP QUESTIONS AND ACCURATE
ANSWERS GRADED A+
●● Si
Answer: Silicon
●● Al
Answer: Aluminum
●● Fe
Answer: Iron
●● Ca
Answer: Calcium
●● Na
Answer: Sodium
●● K
Answer: Potassium
,●● Mg
Answer: Magnesium
●● U
Answer: Uranium
●● Pb
Answer: Lead
●● Rb
Answer: Rubidium
●● Sr
Answer: Strontium
●● Th
Answer: Thorium
●● He
Answer: Helium
, ●● H
Answer: Hydrogen
●● C
Answer: Carbon
●● H2O
Answer: Water
●● CO2
Answer: Carbon dioxide
●● CH4
Answer: Methane
●● SiO2
Answer: Quartz
●● GtC
Answer: Gigatons of Carbon, which equals 1 billion tons of carbon or 1
petagram of carbon