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# CHEM1203 TEST 1

### chapters 1-3

1 Kg = ____ lb 2.2 lb
1 L = ____ qt 1.06 qt
1 meter = ____ in 39.4 in
kilo 1000 (10^3)
deci 1/10 (10^-1)
centi 1/100 (10^-2)
milli 1/1000 (10^-3)
micro 1/1000000 (10^-6)
1 fl oz= ____ mL 30mL
1tsp = ____ mL 5 mL
1 tsp = ____tbs 3 tbs
1 food calorie = _____ chemical calories 1000 chemical calories
matter is made up of mixtures and substances
mixtures can be separated by physical* means into substances
substances are either compounds or elements
compounds can be separated by chemical* means into elements
density = mass/volume
typical units of density g/mL
specific gravity= (density of sample) / (density of water)
density of water 1.00 g/mL
a.c before meals
p.c. after meals
p.r.n. when necessary
h.s. hour of sleep, at bed time
stat immediately, at once
q.d. once a day, everyday
q.o.d. every other day
b.i.d. twice a day
t.i.d. 3 times a day
q.i.d. 4 times a day
min. minute
h hour
q.h. every hour
q.2h every 2 hours
q.____ h every ____ hours
melting point of water 0 c, 32 f
boiling point of water 100 c, 212 f
F= (9/5) c + 32
C= (5/9)( f - 32)
observations of Dalton's atomic theory A.Conservation of mass B.Law of definite proportions C.Law of multiple proportions
conservation of mass mass of the products equals the mass of the reactants (no mass lost)
Law of definite proportions any given compound contains its elements in a fixed proportion by mass
law of multiple proportions
postulates of Dalton's atomic theory A) A)chemical elements are made of atoms that persist unchanged and indestructible through all chemical change
postulate B) B) all atoms of a given element have the same mass(now we know that this is not entirely true
Postulate C) C) chemical compounds contain integral numbers of atoms of the component elements
isolated atom has the shape of a ______ sphere
charge of p, n, e p(+) E(-) N(0 charge)
which are located in the nucleus protons and neutrons
volume of cell occupied by the _____ is much larger electrons
which two parts of an atom have the same mass neutron and proton
most of the mass of an atom is in its ______ nucleus
in an isolated atom atomic number = _____ =__________ number of protons = number of electrons
total number of particles in the nucleus = mass number (protons + neutrons)
isotopes two atoms of the same element with different numbers of neutrons(same atomic number but different mass numbers)
average (weighted average) atomic mass (.9963)(14.00307u)+ (.0037)(15.00011u)= 14.01u (percent occuring/100)(atomic mass of isotope)
thermal energy is associated with the movement of particles
1 calorie(cal)=______J 4.184 Joules
1 kcal=______ cal 1 kJ = ______ J 1000 cal 1000 J
pure substances can be comounds or elements fixed or constant composition
the simpelest type of pure substance is an element
a compound is two or more elements chemically combined in the same proportion, atoms held together by bonds forming small molecules
pure substances cannot be broken down through _________means physical
a mixture is 2 or more substances physically mixed but not chemically combined
homogeneous mixture composition is uniform throughout the sample, also called a solution
heterogeneous mixture components do not have a uniform composition
mixtures can be broken down through ___________ means physical
during a change of state temperature remains constant
Created by: rlongss