SCI 220 week 2 | Questions with 100% Verified Answers | Latest
Update 2026/2027
Question: The element oxygen has an atomic number of 8, which means
it contains:
Answer:
eight protons.
Question: Which of the following is not a subatomic particle?
Answer:
Radon
Question: What term is used to describe all of the chemical reactions
that occur in body cells?
Answer:
metabolism
Question: Hydrogen bonds result from unequal charge distribution on a
molecule. Such molecules are said to be
Answer:
polar
Question: As the concentration of hydroxide ions (OH-) increases, the:
Answer:
- solution becomes more basic.
- pH rises.
Question: Hydrolysis _____ a water molecule.
Answer:
breaks down compounds by adding
Question: An atom can be described as chemically inert if its outermost
electron shell contains _____ electrons.
Answer:
eight
, Question: The reaction between hydrogen and oxygen needed to form
water is an example of a:
Answer:
synthesis reaction.
Question: The elements carbon, hydrogen, oxygen, and nitrogen make
up which percentage of the human body?
Answer:
96%
Question: The most abundant element essential to life is
Answer:
carbon.
Question: Acids
Answer:
release hydrogen ions.
Question: As a result of which reaction during catabolism is a water
molecule added to break a larger compound into smaller
subunits?
Answer:
hydrolysis
Question: A weak acid:
Answer:
dissociates very little in solution.
Question: A force holding two atoms together is a(n)
Answer:
chemical bond.
Question: For sodium to transform from a neutral atom to a positive ion,
it must:
Answer:
lose an electron.
Update 2026/2027
Question: The element oxygen has an atomic number of 8, which means
it contains:
Answer:
eight protons.
Question: Which of the following is not a subatomic particle?
Answer:
Radon
Question: What term is used to describe all of the chemical reactions
that occur in body cells?
Answer:
metabolism
Question: Hydrogen bonds result from unequal charge distribution on a
molecule. Such molecules are said to be
Answer:
polar
Question: As the concentration of hydroxide ions (OH-) increases, the:
Answer:
- solution becomes more basic.
- pH rises.
Question: Hydrolysis _____ a water molecule.
Answer:
breaks down compounds by adding
Question: An atom can be described as chemically inert if its outermost
electron shell contains _____ electrons.
Answer:
eight
, Question: The reaction between hydrogen and oxygen needed to form
water is an example of a:
Answer:
synthesis reaction.
Question: The elements carbon, hydrogen, oxygen, and nitrogen make
up which percentage of the human body?
Answer:
96%
Question: The most abundant element essential to life is
Answer:
carbon.
Question: Acids
Answer:
release hydrogen ions.
Question: As a result of which reaction during catabolism is a water
molecule added to break a larger compound into smaller
subunits?
Answer:
hydrolysis
Question: A weak acid:
Answer:
dissociates very little in solution.
Question: A force holding two atoms together is a(n)
Answer:
chemical bond.
Question: For sodium to transform from a neutral atom to a positive ion,
it must:
Answer:
lose an electron.
