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CSU Chem 103 Exam 1 with complete solutions 2024_2025
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CSU Chem 103 Exam 1 with complete solutions 2024_2025
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CSU Chem 103 Exam 1 with completesolutions 2024/2025
How many atoms are there in a single molecule of ethanol (C2H6O)? - ANSWER-9
Nitrogen makes _____ bond(s) - ANSWER-3
Oxygen makes _____ bond(s) - ANSWER-2
Carbon makes _____ bond(s) - ANSWER-4
The number of electrons in a neutral atom - ANSWER-is the same as the number
of protons
The number of neutrons in an atom is always the same as the number of protons.
- ANSWER-False
n the spring of 2010 an offshore oil rig in the Gulf of Mexico exploded resulting in
millions of gallons of crude oil to be spilled into the Gulf. Dispersants such as
Corexit or Dispersit were used in the clean up process. These substances act
similarly to soaps and detergents. Explain what these molecules would do to oil
spilled into the Gulf of Mexico. - ANSWER-They have a water soluble part and a
greasy part. The greasy part interacts with droplets of oil and because of the
water soluble part the whole droplet becomes soluble in water.
The geometry about carbon when it makes bonds to four other atoms is ________
- ANSWER-tetrahedral
What is geometry about oxygen in water? - ANSWER-bent
Which of the following are not one of the four categories of molecules of life?
Protein, carbs, fats, nucleic acids, or alcohols - ANSWER-alcohols
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