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11.	Heat Energy will flow from Solid B to Slid A because Solid B is 30 degrees Celsius higher than Solid A. Heat energy always flows from the higher one to the lower one. This is the representation of how nature itself tries to reach equilibrium as the temperature will soon balance out. In this case, Solid B will loose energy that will flow to Solid A in an attempt to reach equilibrium.
22.	The particles of a substance are arranged in a DEFINITE GEOMETRIC PATTERN and are constantly VIBRATING. There are only three phases of matter. Gas, Liquid, and Solid. A gas and liquid are never in a DEFINITE GEOMETRIC PATTERN due to their free moving nature. Let alone vibrating. In this case, a good example of a solid that consists of these traits is an ice cube.
33.	CO2+SO2+ H2O = total pressure of the mixture. So if it is given that each of the compounds are 250 torr, then 250+250+250=750 torr
44.	In order for a substance to be decomposed, it must be a compound or a molecule that consists of more than one element. In this case, Choice 4 is the only answer that consists of two molecules with more than one element each. CaO and MgO. An element cannot be further decomposed
55.	Pressure and Volume are indirectly proportional to each other. If one increases, then the other one decreases, vice versa. So in this case, the volume increases from 25 to 50 milliliters. This means that the volume has doubled. If the pressure is 1 atm, that means the new pressure is decreased by a half, in this case, to 0.5 atm.
66.	The atom in this case has an incomplete third principal energy level. Based on the formula, 2n^2, you can find how many electrons can be put into that shell. In this case, we are talking about the third energy level. So you should be able to hold 18 electrons. If you carefully count the number of electrons for this atom in the third shell, there are only 15 electrons.
77.	Omit
88.	Both masses of the Th and the Pa are the same so your mass of the X that you are looking for has a mass of 0. The Th side however has an atomic number of 90 while the Pa side has an atomic number of 91. In order to balance this equation, you need to subtract one from the product side of the reaction. So therefore you are left wit[ 0, -1] e 
99.	In all subatomic particles of all isotopes of hydrogen, you must have a proton. The proton makes up the “atomic number.” It is because of the 1 proton that this atom is referred to as Hydrogen.
1010.	Sulfur’s electron configuration is 2-8-6. In the ground state,  the highest principal quantum number for an electron in the atom is the third energy level
1111.	In order to find this answer, you must used the formula 2n^2. In this case, you are looking for the number of electrons to completely fill the fourth principal energy level. So 2(4)^2 = 32
1212.	C3H5 (OH) 3 in this case you just count the number of hydrogen atoms in this molecule. There are exactly 8 hydrogen atoms found in this atom
1313.	Potassium chlorate is KClO3 while Zinc Nitrate is ZnNO3. They both have Oxygen atoms.
1414.	Given that Lead (Pb) has an oxidation number of +2 (II) and in the Polyatomic ion section, we learn that PO4 has an oxidation state of -3, you do the criss cross and you end up with Pb3(PO4)2
1515.	Metals have the weakest attraction for electrons. This is because they are usually the ones that lose the electrons to the nonmetals. In general, the nonmetals have a higher attraction for electrons.
1616.	The ability for metals to conduct electricity while they are in a solid state is because they are in a “sea of electrons” in which they all share the electrons that they have with each other. In this case, they have an attraction, a charge for electricity.
1717.	When an ionic bond forms (a bond between a nonmetal and a metal), the nonmetal usually gains the electron becoming negative due to the overpowering of the electrons (the negative charge) over the protons (positive charge).  IN this case the metal usually looses their electron and becomes positive because there are now more protons than electrons.
1818.	The bond between hydrogen and oxygen in a water molecule is covalent because it is a bond between a nonmetal and a nonmetal. It is polar due to the high electro negativity of oxygen compared to the electro negativity of the hydrogen atoms.
1919.	Iron has more than one positive oxidation state because it is a metal in the “transition element” part of the periodic table, located in Group 8 while the transition elements are located between groups 3-12.
2020.	Bromine is a nonmetal that is located in group 17. It appears in the liquid state when at STP.
2121.	Of these 4 choices, Sn proves to be the element with the most metallic properties because the lower the more metallic properties it has. It is also not a metalloid which some of the other choices can be classified as.
2222.	The atomic radius increases as more and more electrons begin to fill up each principal energy level.
2323.	Silicon is classified as a metalloid
2424.	Cesium has the greatest tendency to lose an electron because it is lower in period compared to the other group 1 elements
2525.	A nonmetal has high ionization energy, high electro negativity but low conductivity of Heat and Electricity. A good example can be Fluorine. 
2626.	Ca3=3(40) 2P= 2(31) O8= 8(16) 3(40)+ 2(31)+8(16)= 310 g/mol
2727.	The 16.0 Grams per mole represents 6.02 x 10^23 atoms of oxygen
2828.	When you balance the equation, you will have N2+ 3H2 2NH3. The ration of moles of hydrogen consumed to moles of ammonia produced is 3:2
2929.	10 moles / 5 liters = 2.0 M
3030.	When 3 moles of hydrochloric acid is completely consumed, 1.5 moles of H2 have been produced. (1.5)(22.4) = 33.6
3131.	If you look closely, from 50 to 70 degrees Celsius, the curve for NH3 drops approximately 11 grams while the curve for HCl drops approximately 6 grams.  In SO2, there is barely any drop and KNO3 is increasing. The only reasonable answer is NH3.
3232.	When Subjected to stress, both the reactants and the products will be affected in both of their concentrations
3333.	An increase in the temperature of a system that was first at equilibrium will favor a endothermic reaction because it is absorbing the heat and it will increase the rate because the molecules in the system will move at a faster rate causing more collisions
3434.	H2SO4 is the best conductor of electricity in all these choices because when dissolved in an aqueous solution, there will be a Polyatomic ion that will have a charge.
3535.	An Amphoteric substance can act as an acid or a base
3636.	“A” represents the potential energy because it is the energy that is from the initial potential energy to the optimum of the reaction.
3737.	The forward reaction is best described as an endothermic reaction in which energy is absorbed because the forward reaction ends up with more potential energy that it initially started with.
3838.	The two Bronsted acids are HNO3 and H3O because they can both act as a proton donor in this reaction
3939.	HCl is classified as an Arrhenius acid because it can be found in Table K as a common acid and when dissolved in a substance will form a positive H+ ion
4040.	Using the formula M1V1=M2V2, when you multiply 40 milliliters by .4 M and then divide it by .20 M you are left with 80 mL.
4141.	A basic solution will turn pink in phenolphthalein. In this case, the only base here is LiOH (aq)
4242.	CH3COOH is an electrolyte cause it is also known as the acetic acid which forms ions that conduct electricity in a solution
4343.	In the molecule of HClO4, O4= -8 H=+1 that only leaves -7 to be covered. Fortunately, one of the oxidation numbers of Cl is +7.
4444.	When you figure out the charges, you realize that Zn goes from 0 to +2. This means it goes through the oxidation reaction. This also means that it is the reducing agent
4545.	When you figure out the charges, I goes from -1 to 0, becoming more positive. This means it has been oxidized and the oxidation number increases.
4646.	Zn becomes oxidized as the charge goes from 0 to +2. In this case, the half reaction will be    Zn(s) Zn^+2     +    2e^-1
4747.	Mg(s) +2H+ Mg^+2     +       H2 (g) because H+ ions have a higher electro negativity than Mg, therefore taking its electrons.
4848.	In all oxidation-reduction reactions both charge and mass are conserved
4949.	In this reaction it is addition because the two double bonds in CH2CH2 are broken and are each replaced by a hydrogen atom
5050.	This is the only plausible answer because there is the same number of hydrogen, carbons and oxygen but only the order is shifted to create another isomer.
5151.	You can find this by using the formula CnH2n that is located on the alkenes section of Table Q and check each one
5252.	CH3CH2COOH is classified as an acid because it is an acetic acid however with another carbon.
5353.	The products of the fermentation of a sugar are ethanol and carbon dioxide
5454.	Because temperature and pressure are directly proportional if the temperature decreases, so will the vapor pressure
5555.	Increasing the number of neutrons in the nucleus will only affect the atomic mass of the element and will have no effect on the atomic number because the atomic number only consists of the number of protons in the element
5656.	As the pressure on the system increases, the solubility of the CO2 increases because the pressure forces the molecules closer together, compressing it, making it more soluble. Solubility and pressure are both directly proportional.
5757.	2, it's B because it has the same Temperature, pressure, and volume as A.
5858.	2, kilocalories is a unit to measure energy, Joules also.
5959.	4, it's 273 because according to reference table, under STP, the pressure is 1 atm and temperature is 273K
6060.	3, CD is in liquid phase ,,, what can i say about this ?
6161.	1, CO2 and I2, obviously CO2 is in gas phase at room temperature, and other choices like C6H12O6(sugar), and NaCl(salt)are not in solid phase at room temperature.
6262.	2, because when an atom is in excited state, the electro will jump to the outer orbit.
6363.	3, 
6464.	2, according to periodic table, Ni has two electron in the ground state.
6565.	4, when the electrons of an element return to a lower energy state, the bright-line spectrum is produced.
6666.	3, gamma ray has no mass and no charge according ot able O.
6767.	3, 4NO3 and O2 complete balanced out the number of elements in the reactant side.
6868.	3, its 3 because the bonds between two elements have equal eletronegativity.
6969.	2, it's hydrogen bond because hydrogen bonds are only between hydrogen and elements with high electro negativity, and the characteristic of hydrogen bonds are the high boiling point.
7070.	1, molecule-ion attraction exists in aqueous solution and between one metal and one nonmetal.
7171.	4, CH2O can't be divided down.
7272.	1, 1 and 2 because they are close in terms of eltrons.
7373.	3, because Li occur as compounds in nature.
7474.	1, because Cu is in group 11, and compounds have elements from group 11 and 12 are in color.
7575.	2, F has the highest electro negativity so it will never found free in nature.
7676) 4) Kr Group 18 is all noble gasses and more reactive going from top to bottom (Kr is under all the others so its more reactive). 
77
7877)  1) He It is the most lightest and un-reactive so it will diffuse more rapidly 
79
8078) 4) 450 cal The formula is q=m x heat of fusion and they give you a mass of 15g times heat of fusion of 30 cal so 15 x 30 is 450 
81
8279) 1) F2 (g) Density is mass over volume.. Volume at stp is 22.4 L so find mass of F2 and divide by 22.4 
83
8480)  2) 40g 
85	
8681) 1) KCL is a solute in a homogeneous mixture Aq solutions or homogenous and water is the solvent not KCl 
87
8884) 3) Pressure changes no longer occur 
89
9089) 4) KC2H3O2 Salt is metal + non metal and K is the metal everything else is not 
91
9290) 2) 2 .01 is actually x10^-2 so the Ph is 2 
93
9491) 4)  Neutralization Acid + base neutralizes 
95
9693) 1) gain electrons Cl is a electron acceptor 
97
9894)  4 Not sure about this one
99
10096) 2) 6 Im not really sure about this one
101
10297. (4) in polymerization you always end up with h2o and a polymer.
10399. (3) the 1st and 2nd OH go on the 1st and 2nd carbon of ethane.
104100. (1) each bond is 2  electrons
105101. (1) 3 carbons= pent-
106104. (3) 
107105. (2) it starts as 1 and breaks down
108106. (1) the liquids have to break down so it boils first
109107. (2) if they're positive it has to repel and it can't collide easily.
110109. (2) carbon-14 is always for the organic research
111111. (2) 2 elements combine to a different element