CHEM V1/V2, AP V1/V2, HESI A2 BIOLOGY | QUESTIONS AND ANSWERS

CHEM V1/V2, AP V1/V2, HESI A2 BIOLOGY | QUESTIONS AND
ANSWERS | VERIFIED ANSWERS (100% CORRECT) | LATEST EXAM
UPDATE




If a Hydrogen is in a compound, what would its oxidation number be? -
CORRECT ANSWER - +1


What is the oxidation number of any simple ion? - CORRECT ANSWER - The
same as charge of the ion


How many kilograms are in a pound? - CORRECT ANSWER - 0.453592 kg


What is the temperature for freezing point of water in Celsius? - CORRECT
ANSWER - 0 degrees Celsius (32°F for Fahrenheit)


What is the conversion of Celsius to Fahrenheit? - CORRECT ANSWER -
5F=9C+160 (remember 5F because you have 5 fingers on a hand and 9C because
cats have 9 lives)


What is the oxidation number of an element atom? - CORRECT ANSWER - 0


What is the freezing point of sea water in Fahrenheit? - CORRECT ANSWER - -
2C


How many amino acids are in a dipeptide? - CORRECT ANSWER - 2

,If Oxygen is in a compound, what would its oxidation number be? - CORRECT
ANSWER - -2


Which of the following pH values would lemon juice likely have? - CORRECT
ANSWER - 2 because the lower the pH value, the more acidic


What is a pentose? - CORRECT ANSWER - A 5 carbon sugar (Pent = 5) (ose =
sugar)


What is the oxidation state of the Sulfur atom in Sulfuric Acid H2SO4? -
CORRECT ANSWER - 6(each H is +1, each O is -2. All charges have to add to
0. 2+S-8=0


How many neutrons does carbon 14 have? - CORRECT ANSWER - 8 ( mass# -
atomics # = neutrons) 14 6= 8


How many protons does Potassium have? - CORRECT ANSWER - 19


How many amino acids are essential for human life - CORRECT ANSWER - 20
amino acids


Normal body temperature in °C? - CORRECT ANSWER - 37°C


Normal body temperature in °F? - CORRECT ANSWER - 98.6°F


Boiling point of water in °C? - CORRECT ANSWER - 100°C

,Boiling point of water in °F? - CORRECT ANSWER - 212°F


0°K is equal to°C? - CORRECT ANSWER - -273°C


The term Amphoterie means? - CORRECT ANSWER - A substance that can act
as both a base & acid


What is Kelvin based around? - CORRECT ANSWER - Absolute zero


A compound that is Hydrogen or proton donor, corrosive to metals, causes blue
litmus paper to become red and becomes less acidic when mixed with a base is? -
CORRECT ANSWER - Acid


Mixture of 2 or more metals are? - CORRECT ANSWER - Alloys


pH less than 7.0 sour/tart Formulas begin with H (Hydrogen) Proton Donor -
CORRECT ANSWER - Acids:


3 types of radiation in nuclear chemistry? - CORRECT ANSWER - Alpha, Beta
& Gamma


Emission of Helium (He) ions in the nuclei Contains 2 protons & 2 neutrons. +2
Charge radiation particle. Can Largest be stopped by piece of paper - CORRECT
ANSWER - Alpha radiation

, Type of Alloy in which another metal is dissolved in Mercury (Hg)? - CORRECT
ANSWER - Amalgam


Proteins are made up of? - CORRECT ANSWER - Amino acids


Glycogen is what kind of starch? - CORRECT ANSWER - Animal Starch


When an atom GAINS ONE or more electrons - CORRECT ANSWER - Anions
(negative ion)


Basic building block of a molecule? - CORRECT ANSWER - Atom (NOT
CELL!!)


Atomic mass? - CORRECT ANSWER - Average mass of a elements isotope


Atomic #: - CORRECT ANSWER - # of protons in nucleus of an atom


A Hydrogen or proton ACCEPTOR & has hydroxide group in the makeup of the
molecule Produce -OH Bitter, slippery, conduct electricity, formulas contain -OH
pH value greater than 7.0 Proton acceptor - CORRECT ANSWER - Base


_________are Proton donors as Bases are proton acceptors - CORRECT
ANSWER - Acids


Decomposition product of a proton or neutron High speed/energy Electrons
EITHER - charged electrons or + charged positrons Can be stopped by aluminum
foil - CORRECT ANSWER - Beta radiation: