Summary Bio180 exam 1 Q & As (Verified Answers) 2026

Bio180 exam 1 Q & As (Verified Answers)
2026
Protons - Correct Answers ✅positive charge, defines the
element (1 = hydrogen, 2 = helium)


Neutrons - Correct Answers ✅no charge, creates isotopes


Electron - Correct Answers ✅negatively charged particle


Sub-atomic particles - Correct Answers ✅protons,
neutrons, electrons


atomic mass - Correct Answers ✅the mass of an atom


mole - Correct Answers ✅quantity of anything that has the
same number of particles found in 12.000 grams of carbon-
12.


Avogadro's number - Correct Answers ✅number of
representative particles in a mole, 6.02 X 10^23


Molarity - Correct Answers ✅moles of solute/liters of
solution


equation for answering these types of problems: "How many
grams of Sodium Chloride (MW = 58.4) are needed to

, Bio180 exam 1 Q & As (Verified Answers)
2026
make .5 L of a 0.15 M solution?" - Correct Answers
✅G(grams) = L(liters) * M(molarity) * MW(molecular weight)




G = %*10*L


Three types of decay - Correct Answers ✅alpha, beta,
gamma


decay particles - Correct Answers ✅alpha, beta particles or
gamma rays


half-life - Correct Answers ✅length of time required for half
of the radioactive atoms in a sample to decay


half-life - Correct Answers ✅is exponential


electron defines - Correct Answers ✅the element reactivity


Noble gases have how many valence electrons? - Correct
Answers ✅8


first electron shell - Correct Answers ✅can hold 2 electrons