Studied by 2 peopleWhat is the unit for energy in the labs?
Joules (J)
the scientific measurements of heat transfer is called __________, while the device used to measure heat transfer is called a __________
calorimetry, calorimeter
another name for the temperature probe is a
thermocouple
The labs were
qualitative - observations
the specific heat of water is (include the unit)
4.18 J/g °C
In our specific heat lab, the heat lost by the metal should have been equal to the heat gained by the ______
water
if you have two liquids and the specific heat of liquid 1 is 2.35 and the specfic heat of liquid 2 is 3.50, which liquid would boil first?
liquid 1
a hydrocarbon substituent is called a/an
alkyl group
which of the following would have ultimate priority in numbering chains?
double bonds
if an alkane had 12 carbons, how many hydrogens will it have?
26
alkenes have
one or more triple bonds
an alkyl halide is a hydrocarbon with which of the following attached?
halogen
an isomer differs in name but has the same
molecular formula
cis and trans isomers of alkenes are examples of
geometric isomers
how many covalent bonds surround each carbon in organic compounds?
4
What is a representative particle for an ionic compound?
formula unit
One mole is a measure of
quantity
the percent composition is a measure of the percent by
mass
In our lab, empirical formulas, which measures were 1:1 between oxygen and magnesium _______
moles
ionic compounds require
empirical formulas
What is the unit of molar mass?
grams/mole
What is the unit of Avogadro’s number?
particles per mole
What conversion factors would allow you to convert from moles to liters of a gas at STP?
molar volume constant
In factor-label math, the unit of the answer can be found in?
the top of the last space
The only way to change from one substance to another is
mole to mole from the balanced equation
Substances on the left side of a balanced equation are known as
reactants
stoichiometry is
the math relations of chemical reactions
what controls how much product is produced in a chemical reaction?
limiting reactant
it is not stoichiometry unless there is
a reaction
a substance left behind by evaporation is called
residue
what you mix Mg with HCl it results in
single replacement
term for two soluble liquids
miscible
part of the solution that does the dissolving
solvent
gel-like heterogeneous mixture, like toothpaste, with intermediate particle size
colloid
the act of dissolving
solution
soap and detergents
surfactants
general term for a solution with a small amount of solute
dilute
general term for a solution wiht a large quantity of solute
concentration
metal and metal solution
alloy
colligative property that decreases and explains why mud puddles are slow to evaporate
vapor pressure
colligative property for phase change
boiling or freezing point
unit of molality
mol/kg
part of a water molecule that surrounds the anion
polar hydrogen
part of the solution that is dissolved
solute
a homogeneous mixture of two substances in the same state
solution
factors affected by the same amount of solute
colligative properties
removes moisture from the air and turns solid
desiccant
unit for molarity
mol/L
part of the water molecule that surrounds the cation
polar oxygen
a polar molecule
water
heterogeneous mixture wiht the largest partilce size
suspension
Why did we use the ideal gas law in the lab problems with stoichiometry?
to account for room conditions
List the 4 variables that describe a gas
pressure, volume, temperature, and moles
what is the formula for percent error?
I T.Y. - A.Y. / T.Y I x 100
when the temperature on a gas increases the volume of that gas will _____, as defined by ______
increase; Charles Law
brackets in solution chemistry means
molarity
a Bronsted-Lowery acid is a
proton donor
What is a common anion produced by the ionization of a base (like water)?
amphoteric
another name for a hydrogen ion is
a proton
a solution in which the hydrogen ion concentration is greater than the hudroxide concentrarion is called a/an
acidic solution
Arrhenius said an acid was any substance that
produces hydrogen ions in water
the pH of a 1.0 M solution of HCl is
0
pH is the
negative log of the hydrogen ion concentration
the most acidic color of phenolphthalein is
clear
the products of neutralization are
salt and water
the hydrogen ion concentration of pure water is
1 x 10 ^-7
a Lewis base is a/an
electron donor
Gas particles are in constant, rapid, and _____ motion and have perfectly _______ collisions
random, elastic
gases can also be sqeezed. the PowerPoint called this property
compressibility
when the volume of a gas is decreased the pressure on that gas will ____ as defined by _______ law
increases, Boyle’s
it would only be possible to accomplish standard conditions if the work were done at ______ on a day when the temperature was __ degrees Celsius
sea level, 0
gases move from high to low pressure by a process called _______ and fill their containers completely by the process of ________
diffusion, dispersion
an acid that ionizes completely in water is called a
strong acid
a neutralization procedure to determine unknown concentration is called
titration
what dilute solution would have a high pH?
NaOH
a substance that changes color with a change in pH is called a/an
indicator
What is the formula to calculate heat energy we used in all three labs?
Q = mCΔT
Note 
Flashcard (59)