HESI A2 CHEMISTRY QUESTIONS AND ANSWERS VERIFIED BY
EXPERT GRADED A+
What are all metric measurements composed of?
metric prefix and a basic unit of measurement
What is the most commonly used temperature in scientific community?
Celsius
Nucleus of an atom contains...
protons and neutrons
an atom with a positive charge
cation
what are the rows called in the periodic table
periods
atomic number
number of protons
atomic mass
mass of elements isotopes
how are chemical equations written?
reactants --> products
charge of potassium in KCL
+1
Catalyst substance accelerates a reaction by...
finding an alternate pathway for a reaction that requires less energy
percent concentration is expressed...
parts per 100 parts
what will 1 L of a 1 molar solution of any element contain?
atomic mass in grams
chemical bonding is the bonding of ...
, atom to another atom
describe an ionic bond
it does not share electrons
describe reduction of a redox reaction
gain of electrons
what are acids
hydrogen donors
name a benefit for water to make hydrogen bonds
high specific heat
what is a base
hydrogen acceptor
chemical reaction along catabolic pathways increase in...
entropy
What is the pH of 7?
normal
correctly write Iodine with atomic mass of 131
131^I
131 is placed in the upper left side of I (Iodine)
Correct formula for magnesium chloride
MgCl2
Weakest intermolecular force
dispersion
Beta radiation is the emission of...
an electron
Describe carbohydrates
they serve as fuel for the body
what are monosaccharides
simplest form of carbohydrate
Disaccharides are the joining together of...
two monosaccharides
EXPERT GRADED A+
What are all metric measurements composed of?
metric prefix and a basic unit of measurement
What is the most commonly used temperature in scientific community?
Celsius
Nucleus of an atom contains...
protons and neutrons
an atom with a positive charge
cation
what are the rows called in the periodic table
periods
atomic number
number of protons
atomic mass
mass of elements isotopes
how are chemical equations written?
reactants --> products
charge of potassium in KCL
+1
Catalyst substance accelerates a reaction by...
finding an alternate pathway for a reaction that requires less energy
percent concentration is expressed...
parts per 100 parts
what will 1 L of a 1 molar solution of any element contain?
atomic mass in grams
chemical bonding is the bonding of ...
, atom to another atom
describe an ionic bond
it does not share electrons
describe reduction of a redox reaction
gain of electrons
what are acids
hydrogen donors
name a benefit for water to make hydrogen bonds
high specific heat
what is a base
hydrogen acceptor
chemical reaction along catabolic pathways increase in...
entropy
What is the pH of 7?
normal
correctly write Iodine with atomic mass of 131
131^I
131 is placed in the upper left side of I (Iodine)
Correct formula for magnesium chloride
MgCl2
Weakest intermolecular force
dispersion
Beta radiation is the emission of...
an electron
Describe carbohydrates
they serve as fuel for the body
what are monosaccharides
simplest form of carbohydrate
Disaccharides are the joining together of...
two monosaccharides
