Chemistry Final Part II
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Chemistry Final Part II
Which of the following is a heterogeneous mixture?
whole wheat bread
All of the following are heterogeneous mixtures
Carbon dioxide dissolved in water is an example of which solute-solvent combination?
an example of a colloid?
Which mixture is made up of the smallest particles?
A metal solution is an
The Tyndall effect is used to distringuish between
solutions and colloids
Which of the following is an electrolyte?
Which of the following is a molecular substance whos aqueous solutions carries an electric current?
Which of the following does
increase the rate of dissolving a solid in water?
using larger pieces of solid
Which of the following will dissolve most slowly?
large salt crystals in unstirred water
Which of the following is at equilibrium when undissolved solute is visible?
a saturated solution
In a solution at equiilibrium
the rate of dissolution and the rate of crystallization are equal
Which of the following is likely to produce crystals if disturbed?
a supersaturated solution
In the expression "like dissolves like" the word
refers to similarity in molecular
Which of the following is an example of a polar solvent
Pressure has the greatest effect on the solubility of
gases and liquids
The formation of solid-liquid solutions
always absorbs energy as heat
Effervescevce is the
escape of gas from a gas-liquid solution
Precipitation is an example of what type of reaction?
The formula for the hydronium ion is
Dissolving HCL in water produces
The law of combining volumes applies only to gas volumes
measured at constant temperature and pressure
For reactants or products that are gases, the coefficients in the chemical equation indicate
The principle that under similar pressures and temperatures, equal volumes of gases contain the same number of molecules is attributed to
Equal volumes of diatomic gases under the same conditionsof temperature and pressure contain the same number of
At STP, the standard molar volume can be used to calculate the
number of moles of gas
Knowing the mass and volume of a gas at STP allows one to calculate the
molar mass of the gas
The ideal gas combines Boyle's law, Charle's law, Gay-Lssac's Law and
The standard molar volume of a gas is all of the following except
dependent upon the size of the molecules
What does the constant bombardment of gas molecules against the inside walls of a container produce?
What happens to the volume of a gas during compression
What instrument meaures atmospheric pressure
Why does a can collapse when a vacuum pump removes air from the can
Unbalanced outside force from the atmospheric pressure crushes the can
To convert for the partial pressure of water vapor in a gas collection bottle, the vapor pressure of H
O at the collecting temperature is generally
subtracted from the atmospheric pressure
Who developed the concept that the total pressure of a mixture of gases is the sum of their partial pressures?
If the temperature of a fixed quantity of a gas decreases and the pressure remains unchanged,
its volume decreases
What are the values for STP
1 atm and 0 degress Celsius
Carbon shows a very strong tendency to form
How many covalent bonds can a carbon atom usually form?
Carbon atoms readily join with atoms of
both elements and carbon
Organic compounds are defined as all covalently bonded compounds containin carbon
oxides and carbonates
The diversity of organic compounds is so great because
compounds have many isomers
Which formula shows the numbers and types of atoms in a molecule but not the bonds?
Isomers are compounds that have the
same molecular forumla but different structures
Which formula is most useful in distinguishing isomers?
The carbon-hydrogen bonds of alkanes are
Each carbon atom in a molecule forms four single covalrnt bonds with other atoms in a
Hydrocarbons are grouped into series according to the
bonds between carbon atoms
Which of the following is an alkane
Hydrocarbons in which carbon atoms form only single bonds and are arranged ub a ring are called
What are two allotropic forms of carbon?
diamond and graphite
Which statement about the hardness of diamond and graphite is correct?
Diamond is very hard, and graphite is very soft
Which of the following is an atom or a group of atoms responsible for the specific properties of an organic compound?
What is the functional group in carboxylic acids
What is the name of the funtional group -OH
The systematic names of ketones end in
What are alkanes called when atoms of flourine, chlorine, bromine, or iodine are substituted for hydrogen atoms?
How is the functional group in alkyl halides often written
What is the general formula for ethers?
A carbonyl group consists of
one carbon atom and one oxygen atom
Which group of organic compounds can be considered derivatives of ammonia, NH
What is the general formula of esters?
Carboxylic acids are