AC-HPAT (BIOLOGY, CHEMISTRY, PHYSICS, MATH)
EXAM 2024 ACTUAL EXAM COMPLETE 300 QUESTIONS
WITH DETAILED VERIFIED ANSWERS (100% CORRECT
ANSWERS) / ALREADY GRADED A+
double-displacement reaction - ANSWER: A double displacement reaction, also
known as a double replacement reaction or metathesis, is a type of chemical
reaction where two compounds react, and the positive ions (cation) and the negative
ions (anion) of the two reactants switch places, forming two new compounds or
products
Precipitate - ANSWER: precipitate is an insoluble solid that emerges from a liquid
solution. The emergence of the insoluble solid from solution is called precipitation.
Often the precipitate emerges as a suspension. Precipitates can form when two
soluble salts react in solution to form one or more insoluble products.
Energy Levels - ANSWER: Energy levels (also called electron shells) are fixed
distances from the nucleus of an atom where electrons may be found. As you go
farther from the nucleus, electrons at higher energy levels have more energy.
Electrons in the outermost energy level of an atom are called valence electrons
Marquis Test - ANSWER: The Marquis Test is commonly used for Ecstasy testing as
MDMA turns the precipitate purple black. Cobalt thiocyanate is used to test for
cocaine. The Cobalt is mixed with the questionable substance, then drowned in
hydrochloric acid, doused in chloroform, and shaken.
What is the relation between an atomic number and a mass number? - ANSWER:
Atomic number is actually the number of protons in an atom while mass number is
the number of nucleons i. e, number of protons plus the number of neutrons.
Isotopes - ANSWER: Isotopes refer to the nuclides of a certain element that have
different numbers of neutrons, or in other words, atomic nuclei that have the same
number of protons but different numbers of neutrons. A radioisotope is an isotope
that is unstable and therefore undergoes radioactive decay or will at some point.
Chemical Synthesis - ANSWER: Chemical synthesis, the construction of complex
chemical compounds from simpler ones. It is the process by which many substances
important to daily life are obtained. It is applied to all types of chemical compounds,
but most syntheses are of organic molecules.
Decomposition - ANSWER: A decomposition reaction is a type of chemical reaction in
which a single compound breaks down into two or more elements or new
compounds. These reactions often involve an energy source such as heat, light, or
electricity that breaks apart the bonds of compounds
, single-displacement reaction - ANSWER: A single-displacement reaction, also known
as a single-replacement reaction, is a type of chemical reaction where an element
reacts with a compound and takes the place of another element in that compound.
This type of reaction is typically pictured like this: Here, A replaces B in the
compound BC
Flame test - ANSWER: flame test is an analytical procedure used in chemistry to
detect the presence of certain elements, primarily metal ions, based on each
element's characteristic emission spectrum. The color of flames in general also
depends on temperature; see flame color.
Precipitation reaction - ANSWER: A precipitation reaction refers to the formation of
an insoluble salt when two solutions containing soluble salts are combined. The
insoluble salt that falls out of solution is known as the precipitate, hence the
reaction's name. Precipitation reactions can help determine the presence of various
ions in solution.
organic compounds - ANSWER: An organic compound is a substance that is added to
a product, like food, to improve some qualities such as taste, smell, colour and
texture. These substances can be both positive and negative for human health.
Synthetic materials - ANSWER: Synthetic materials which are by-products of
petroleum are non-biodegradable, synthetic products take a long time to
decompose, creating long-term pollution. Nylon is hard to recycle, making them hard
to decompose, accumulate landfills more. Polyesters are easy to recycle, which
makes them less harmful to the society.
Electronegativity - ANSWER: Electronegativity is a measure of the tendency of an
atom to attract a bonding pair of electrons. The Pauling scale is the most commonly
used. Fluorine (the most electronegative element) is assigned a value of 4.0, and
values range down to caesium and francium which are the least electronegative at
0.7.
Covalent bonds - ANSWER: Covalent bonds are chemical bonds between two non-
metal atoms. An example is water, where hydrogen (H) and oxygen (O) bond
together to make (H2O). A full outer shell usually has eight electrons, or two in the
case of hydrogen or helium. ... Covalent bonds are formed by atoms sharing valence
electrons.
Functional Group - ANSWER: The functional group is defined as an atom or group of
atoms joined in a specific manner, which gives the chemical properties of the organic
compound and are the centers for chemical reactivity. Compounds having a similar
functional group have undergone similar reactions.
unique characteristics of the carbon atom in terms of covalent bonding - ANSWER:
Because each carbon is identical, they all have four valence electrons, so they can
easily bond with other carbon atoms to form long chains or rings. In fact, a carbon
EXAM 2024 ACTUAL EXAM COMPLETE 300 QUESTIONS
WITH DETAILED VERIFIED ANSWERS (100% CORRECT
ANSWERS) / ALREADY GRADED A+
double-displacement reaction - ANSWER: A double displacement reaction, also
known as a double replacement reaction or metathesis, is a type of chemical
reaction where two compounds react, and the positive ions (cation) and the negative
ions (anion) of the two reactants switch places, forming two new compounds or
products
Precipitate - ANSWER: precipitate is an insoluble solid that emerges from a liquid
solution. The emergence of the insoluble solid from solution is called precipitation.
Often the precipitate emerges as a suspension. Precipitates can form when two
soluble salts react in solution to form one or more insoluble products.
Energy Levels - ANSWER: Energy levels (also called electron shells) are fixed
distances from the nucleus of an atom where electrons may be found. As you go
farther from the nucleus, electrons at higher energy levels have more energy.
Electrons in the outermost energy level of an atom are called valence electrons
Marquis Test - ANSWER: The Marquis Test is commonly used for Ecstasy testing as
MDMA turns the precipitate purple black. Cobalt thiocyanate is used to test for
cocaine. The Cobalt is mixed with the questionable substance, then drowned in
hydrochloric acid, doused in chloroform, and shaken.
What is the relation between an atomic number and a mass number? - ANSWER:
Atomic number is actually the number of protons in an atom while mass number is
the number of nucleons i. e, number of protons plus the number of neutrons.
Isotopes - ANSWER: Isotopes refer to the nuclides of a certain element that have
different numbers of neutrons, or in other words, atomic nuclei that have the same
number of protons but different numbers of neutrons. A radioisotope is an isotope
that is unstable and therefore undergoes radioactive decay or will at some point.
Chemical Synthesis - ANSWER: Chemical synthesis, the construction of complex
chemical compounds from simpler ones. It is the process by which many substances
important to daily life are obtained. It is applied to all types of chemical compounds,
but most syntheses are of organic molecules.
Decomposition - ANSWER: A decomposition reaction is a type of chemical reaction in
which a single compound breaks down into two or more elements or new
compounds. These reactions often involve an energy source such as heat, light, or
electricity that breaks apart the bonds of compounds
, single-displacement reaction - ANSWER: A single-displacement reaction, also known
as a single-replacement reaction, is a type of chemical reaction where an element
reacts with a compound and takes the place of another element in that compound.
This type of reaction is typically pictured like this: Here, A replaces B in the
compound BC
Flame test - ANSWER: flame test is an analytical procedure used in chemistry to
detect the presence of certain elements, primarily metal ions, based on each
element's characteristic emission spectrum. The color of flames in general also
depends on temperature; see flame color.
Precipitation reaction - ANSWER: A precipitation reaction refers to the formation of
an insoluble salt when two solutions containing soluble salts are combined. The
insoluble salt that falls out of solution is known as the precipitate, hence the
reaction's name. Precipitation reactions can help determine the presence of various
ions in solution.
organic compounds - ANSWER: An organic compound is a substance that is added to
a product, like food, to improve some qualities such as taste, smell, colour and
texture. These substances can be both positive and negative for human health.
Synthetic materials - ANSWER: Synthetic materials which are by-products of
petroleum are non-biodegradable, synthetic products take a long time to
decompose, creating long-term pollution. Nylon is hard to recycle, making them hard
to decompose, accumulate landfills more. Polyesters are easy to recycle, which
makes them less harmful to the society.
Electronegativity - ANSWER: Electronegativity is a measure of the tendency of an
atom to attract a bonding pair of electrons. The Pauling scale is the most commonly
used. Fluorine (the most electronegative element) is assigned a value of 4.0, and
values range down to caesium and francium which are the least electronegative at
0.7.
Covalent bonds - ANSWER: Covalent bonds are chemical bonds between two non-
metal atoms. An example is water, where hydrogen (H) and oxygen (O) bond
together to make (H2O). A full outer shell usually has eight electrons, or two in the
case of hydrogen or helium. ... Covalent bonds are formed by atoms sharing valence
electrons.
Functional Group - ANSWER: The functional group is defined as an atom or group of
atoms joined in a specific manner, which gives the chemical properties of the organic
compound and are the centers for chemical reactivity. Compounds having a similar
functional group have undergone similar reactions.
unique characteristics of the carbon atom in terms of covalent bonding - ANSWER:
Because each carbon is identical, they all have four valence electrons, so they can
easily bond with other carbon atoms to form long chains or rings. In fact, a carbon
