Le Chatlier’s Principle Top of the inner cone.
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Transcript of Le Chatlier’s Principle Top of the inner cone.
Final Review
Le Chatlier’s Principle
When a system at equilibrium is disturbed by application of a stress, it attains a new
equilibrium position that minimizes the stress. This is known as ________.
Top of the inner cone
Where is the hottest part of the Bunsen burner flame?
2
One orbital can hold a MAXIMUM of ______ electrons.
Atmospheric pressure
A liquid will boil when equilibrium vapor pressure
equals __________.
Polar solute
If you are using a polar solvent, what type of solute will most likely
dissolve?
Endothermic
Suppose that during the reaction a chemistry student touches the beaker and observes that it feels COLD. The
student should conclude that the chemical reaction is ______.
Long pantsClosed toe shoesHair pulled back
No baggy sleevesNo dangling jewelry
What are 2 examples of appropriate dress in the lab?
Mass number
A certain isotope of hydrogen has the following hyphen notation: hydrogen-
2. The number 2 represents the ______.
Erlenmeyer Flask
Identify:
Decomposition
Given the following word equation:
2H2O 2H2 + O2 . What type of reaction does this
equation represent?
volume
mL is a unit of ____.
pressure
kPa is a unit of _____.
Alkaline Earth Metal
What type of element is Mg?
Florence Flask
Identify:
Water
Suppose you made a salt water solution. What is the
solvent?
(aq)
What symbol is used in a chemical equation to indicate that a
substance is dissolved in water?
Halogen
What type of element is F?
Compound
A substance made of two or more elements whose atoms are
chemically combined is a(n) ______.
Salt
Suppose you made a salt water solution. What is the
solute?
Saturated
A stable solution in which the maximum amount of
solute has been dissolved is _______
Single Displacement
Given the following word equation:
2Na + 2HCl 2NaCl + H2. What type of reaction does this
equation represent?
Watch glass
What is used as a cover to the evaporating dish?
Neutrons
Isotopes of a given element have a different number of
______.
Homogeneous
Food coloring and water is considered a ______ mixture.
(s)
What symbol is used in a chemical equation to indicate that a substance is a solid?
Fusion
The process of joining atomic nuclei is called____
Catalyst
A substance that increases the rate of a reaction without itself being changed is a(n) ______.
Trigonal Planar
What is the molecular geometry of the following?:
Solution
A homogeneous mixture is also known as a(n) ______.
14
Suppose an atom has 6 protons and 8 neutrons. What is the
mass number?
Ne (it’s a noble gas!)
Which of the following elements is MOST stable?
Na, U, Ba, Cl, Ne
Mass
“g” is a unit of _____.
Polar covalent
A bond where there is an UNEQUAL SHARING of electrons is ______.
Release OH- ions in water
According to Arrhenius, bases are defined as substances that
______.
Trigonal pyramidal
What is the molecular geometry of the following:
Watch glass
Identify:
Heterogeneous
Soil is considered a ______ mixture.
(g)
What symbol is used in a chemical equation to indicate
that a substance is a gas?
Hydrogen
Suppose a reaction is occurring in a test tube. Further, suppose that a lit splint held over the test tube “pops” and/or “barks”. The gas in the test
tube is most likely ______.
HeatingStirring
Grinding
What are 3 ways to increase the rate of dissolving of a solute?
Oxygen
Suppose a reaction is occurring in a test tube. Further, suppose that a lit splint held over the test tube and the flame gets brighter. The gas in the
test tube is most likely ______.
Noble Gas
What type of element is He?
Sublimation
The change of state from a solid directly to a gas is
called ______.
Particles are spaced very far apart
Describe the particle spacing of a gas.
Unsaturated
A solution that is capable of dissolving more solute is ______.
melting
The change of state from a solid directly to a liquid is
called _____.
Particles are spaced very CLOSE together
Describe the particle spacing of a solid.
decrease
If the volume of a gas is increased, then the gas pressure
will ______.
Transition Metal
What type of element is Mn?
Ne
According to the following electron notation: 1s22s23s23p4
What element is this?
Crucible and Cover
Identify:
NO defined melting pointsNo geometric patterns
List 2 properties of an amorphous solid.
formation of a precipitateproduction of a gas
production of heat/lightColor change
What are the 4 indicators that a chemical reaction
occurred?
Double Displacement
Given the following word equation:
BaCl2 + Mg(OH)2 MgCl2 + Ba(OH)2 .
What type of reaction does this equation represent?
Synthesis
Given the following word equation:
2H2 + O2 2H2O . What type of reaction does this
equation represent?
Positive
Cations have a ____ charge
Nonpolar covalent
A bond where there is an EQUAL SHARING of electrons is ______.
Negative
Anions have a _____charge
Electronegativity
A measure of the ability of an atom to attract electrons when
bonded to another atom is called ______.
Carbon dioxide
Suppose a reaction is occurring in a test tube. Further, suppose that a lit
splint held over the test tube goes out. The gas in the test tube is most likely
______.
Bent
What is the molecular geometry of the following?:
Base
Lye turns red litmus paper blue, and blue litmus paper stays
blue. Lye is a(n) ______.
Release H+ ions in water
According to Arrhenius, acids are defined as substances that
______.
increase
If the volume of a gas is increased, then the gas temperature will ______.
Tetrahedral
What is the molecular geometry of the following?:
Acid
Vinegar turns blue litmus paper red, and red litmus paper stays
red. Vinegar is a(n) ______.
Colloids
What type of mixture exhibits the Tyndall effect?
Alkali Metal
What type of element is Na?
Fission
The process of splitting atoms is called____
Exothermic
Suppose that during the reaction a chemistry student touches the
beaker and observes that it feels HOT. The student should conclude
that the chemical reaction is ______.