A term describing a substance that will disolve in a liquid such as water.
What is soluble?
100
A term that describles a chemical reaction that can change direction.
AB + C <==> AC + B
What is reversible reaction?
100
Space in an atom in which there is a high probability of finding electrons.
What is orbital?
100
Measure of the ability of an atom in a bond to attract electrons.
What is electronegativity?
100
A change of a one or more substances into other substances. Changes the identity of original substance
What is chemical change/reaction
200
A term describing a substance that will NOT disolve in a liquid such as water.
What is insoluble?
200
Disturbing equilibrium of a chemical reaction will cause the reaction to do this.
What is readjust to reduce disturbance and regain euilibrium?
200
Electrons fill the shells (rings) of an atom in order from _________ to _________ energy levels.
What is lower to higher?
200
A term that describes the inner (core) electrons blocking/shielding the attraction of the nucleus for the valence e-
What is shielding effect?
200
Counting compounds and atoms: 2NH4NO3
Compounds:
Amoniums (NH4):
Nitrates (NO3):
N atoms:
H atoms:
O atoms:
Compounds: 2
Amoniums (NH4): 2
Nitrates (NO3): 2
N atoms: 4
H atoms: 8
O atoms: 6
300
The reactant of which there is not enough; when it is used up, the reaction stops and no new product is formed.
What is limiting reactant?
300
Removing products from a chemical reaction will cause the reaction to readjust this way.
What is shift to the right to produces more products, compensating for the loss?
300
Element which has an electron configuration of [Ar] 4s2.
What is Calcium?
300
Name the kind of bond that forms between atoms that have the following differences in electronegativity.
A. difference in EN = .03
B. difference in EN = 1.5
C. difference in EN = 2.5
D. Bond that results from a "sea of electrons"
What is nonpolar covalent, polar covalent, ionic, and metallic?
300
This Law states that the mass of the products will be equal to the mass of the reactants in a chemical reaction.
What is Law of conservation of mass/matter?
400
The amount of energy particles must have when they collide to react.
What is activation energy?
400
Increasing ___________ will increase the rate of reaction, while decreasing ____________ will decrease the rate of reaction.
Give two answers for each blank.
What is temperature and concentraion?
400
The electron configuration Radon.
What is 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p6, 5s2, 4d10, 5p6, 6s2, 4f14, 5d10, 6p6
400
Explain how electronegativity effects the bond between atoms. Give details for each type of bond:
"As electronegativity increase...."
1. Ionic
2. Covalent (Nonpolar)
3. Polar covalent
As electronegativity increase, so does the pull on electrons.
The strongest pull results in complete transfer of e- to form ionic bond.
Medium pull creates a polar covalent compound because of the unequal sharing of electrons.
Equal pull results in a nonpolar covalent compound.
400
Identify the following as one of the five types of reactions:
1. AB + CD ==> AD + CB
2. ABC + D ==> ABCD
3. AB + C ==> AC + B
4. ABCD ==> AB + C + D
5. CH4 + O2 ==> CO2 + H2O
5.
A term for a system where no net changes occurs in the amount of reactants or products.
What is equilibrium?
500
A term that describes a chemical reaction which has products and reactants formed at the same rate.
What is Dynamic Equilibrium?
500
Give both the electron configuration and the abbreviated electron configuratin for the S-2 ion.
What is 1s2, 2s2, 2p6, 3s2, 3p6 and [Ne] 3s2, 3p6?
500
Give the reason that electronegativity increase:
A. as you move across a period on the PT.
B. as you move up a group on the PT.
A. Increase in # of protons; electrons add to same energy level.
B. Low shielding effect; fewer # of energy levels (rings); distance between nucleus and valence electrons decrease.
500
__C3H8(g) + ___ O2(g) ----> __CO2(g) + __ H2O(g)
Label:
A. Products
B. Reactants
C. Physical State of each substance
D. Coefficients for balanced equation
A. C3H8 + O2
B. CO2 + H2O
C. all gas
D. 1, 5, 3, 4