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Medical school entrance exam- chemistry Questions with Solutions
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Medical school entrance exam- chemistry
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Medical school entrance exam-chemistry
Atoms - answer smallest unit of matter that retains all of the chemical properties of an
element
States of matter - answer the physical forms of matter, which include solid, liquid, and
gas
Liquid - answer No definite shape (takes the shape of its container)
Has definite volume
Particles are free to move over each other, but are still attracted to each other
Solid - answer A form of matter that has a definite shape and volume
Gas - answer A state of matter with no definite shape or volume
Chemical bonds - answer link elements together to form more complex molecules called
compounds. A compound consists of two or more types of elements held together by
covalent or ionic bonds.
Three states of transition of matter - answer melting, freezing, evaporating
Variables to consider for transition stage - answer pressure (P) and temperature (T).
Ideal Gas Law - answerPV=nRT (n is equal to the number of moles of the substance
and R is the gas constant 0.082)
Where V is volume, R is the gas constant, and n is the number of moles of gas.
ideal gas law - answer assumes that no intermolecular forces are affecting the gas in
any way, while the van der Waals equation includes two constants, a and b, that
account for any intermolecular forces acting on the molecules of the gas
Melting point (Tf) - answerEach substance has a melting point. The melting point is the
temperature that a solid will become a liquid. At different pressures, different
temperatures are required to melt a substance.
Atoms are made of - answerprotons, neutrons, electrons
atoms are tiny indivisible particles - answer
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