1 Exampromax - Stuvia US
AC-HPAT Chemistry Questions and Answers
100% Correct Answers Already Graded A+
Q: double-displacement reaction
Ans: 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
Q: Precipitate
Ans: precipitate is an insoluble solid that emerges from a liquid solution. The
Exampromax - Stuvia US
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.
Q: Energy Levels
Ans: 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
Q: Marquis Test
Ans: 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.
Q: What is the relation between an atomic number and a mass number?
Ans: 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.
Q: Isotopes
, 2 Exampromax - Stuvia US
Ans: 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.
Q: Chemical Synthesis
Ans: 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.
Q: Decomposition
Ans: 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
Exampromax - Stuvia US
Q: single-displacement reaction
Ans: 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
Q: Flame test
Ans: 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.
Q: Precipitation reaction
Ans: 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.
Q: organic compounds
AC-HPAT Chemistry Questions and Answers
100% Correct Answers Already Graded A+
Q: double-displacement reaction
Ans: 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
Q: Precipitate
Ans: precipitate is an insoluble solid that emerges from a liquid solution. The
Exampromax - Stuvia US
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.
Q: Energy Levels
Ans: 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
Q: Marquis Test
Ans: 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.
Q: What is the relation between an atomic number and a mass number?
Ans: 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.
Q: Isotopes
, 2 Exampromax - Stuvia US
Ans: 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.
Q: Chemical Synthesis
Ans: 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.
Q: Decomposition
Ans: 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
Exampromax - Stuvia US
Q: single-displacement reaction
Ans: 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
Q: Flame test
Ans: 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.
Q: Precipitation reaction
Ans: 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.
Q: organic compounds
