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1A worksheet :
1) A - when iron oxidizes its chemical properties change. rather then the other answers because the other answers are physical change
3) D - table s shows that I- is has the largest radius.
5) D - in the periodic table the electronegativity increases going across and group 18 doesn't have a electronegativity leaving group 17 as the answer
8) C - the answer is c because its symmertrical but it has is a polar bond because of its unequal sharing of electrons
11) A - when you look at the table s and look at melting its 234k and so it will be the same going backwards
10)A- ideal gas law states gas particles go in a random straight line and no attractive force.
13)B- the messy room example showed how you use very little energy but at the end you get high entropy
14) C- the answer is c because if you simply Aline the bright line spectra lines elements x and a are present in the mixture .
16) A- when a ion has a charge of negative 2 it suppose to mean the ion has 2 more electrons then protons.
18) B - according to Avogadro law volume = number of moles . so therefore gas sample 1 and 3 have a volume of 5 so both have 5 moles.
19) A - in the table i if you look for the formula its 2NO2(g) and in the equation you have only 1 so therefore you divide by 2 66.4. and in the table its positive 66.4. therefore you get +33.2
22)  C- the number in front the element is the atomic mass therefore you subtract the atomic number. and you get 2

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The answer to question #20 is choice C because electrons have a negative charge of 1 and is located outside of the nucleus in electron shells.

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Packet 1a Question #23:
The answer choice is D because an electronconfiguration of Potassium is 2-8-8-1.  When excited, it changes to 2-8-7-2.  That is why it is D.

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the answer is choice C because the rest of the choices show electron configurations at its ground state

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; A    ammonium is NH4 while nitrate is NO3

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Chemistry Review MP5 1D
#11,C, Formula mass is the sum of the atomic masses of its atom.
#10,B, Empirical formula is the simplest formula for a compound, and molecular formula is the formula given to the number of atoms of elements in a compound.
#1,It wont reach equilibrium since its an open system.

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packet 1c  q#11 is A because the positive charges are in the electron

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the answer is choice B because as the Mg ion changes to a atom it gains 2 electrons.

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1a
#7: C because table H shows the vapor pressure of propane between 80 and 90 at 50 degrees Celsius
#11: C because 373k is 100 degrees Celsius
#25:D because the table shows only sodium and iodine different in mallrability
#12: C because of Collison theory
#10: A because ideal gas law has Collisions that are random and the molecules have no attraction
#3: C because as you go right on the periodic table atomic radius decreases and as you go down it increases
#4: C because the chemical formulas are CO and CO2 but their physical properties are similar
#7: C because table H shows the vapor pressure of propane between 80 and 90 at 50 degrees Celsius
#11: C because 373k is 100 degrees Celsius
#22: C because mass of 42 minus an atomic never of 19 equals 23 neutrons
#24: C because the diagram shows two elements combining and one of which is just apart of it
#20: C because only Cl is moving
#18: D because avogadros law states two different gases at the same temp., Pressure, and volume have the same number of molecules
#16: D because 10 electrons minus 12 protons equals 2-
#9: A because molecules are what's being separated

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packet 1b
Q#3  A=b) Stronger hydrogen bondings
Q#22 A=b) the same number of protons and a different number of neutrons
Q#19 A=
Q#2 A=

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Josh N

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Chemistry Review MP5 1C
1.B) 5.0 mol
220g/44g/mol =

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the answer is choice B because when two particles collide together with the proper energy and orientation its collision theory

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the answer choice is A because it only has one capital letter when the rest of the choices have two and they can be broken down further not A

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Breyana question #10 1b answer: D its two single elements combining

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Breyana question #10 1b answer: D its two single elements combining

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the answer choice is B because its the only answer with the same number of molecules at STP at 2.0 liters

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Packet 1a Question #24:
The answer is C because there are three different elements and only one element. This creates a mixture.

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Packet 1a
First Row:
12-c
collision theory
1-a
b,c,d are physical
5-d
higher electronegativity going right
10-a
ideal gas law says they are random, straight and must collide
16-a

First Column:
13-b
24-c
4-d
23-d

Second Column-
2-b
19-a
8-c
7-c

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Packet 1B
number 1 is A because the iron cube  has a higher temperature so it attempts to balance their temperatures
number 3 is B because hydrogen bonding affects boiling points
number 5 is A because the principle measures temperature and pressure
number 11 is B because positive ions lose ions
number 22 is B because isotopes have only a different amount of neutrons

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the answer choice is D because temperature will shift a chemical reaction from equilibrum.

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Answer is B because the gold foil experiment led to the conclusion that an atom is mostly empty and has a small positively charged nucleus.

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the answer choice is C because its the lowest density.
packet 1

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Packet 1a Question #14
The answer is C because Element X and Element A are present in the mixture.

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14. C) Atomic Number because as you read from left to right , the numbers are going up
21. C) Energy is released when bonds are broken, and energy is absorbed when bonds are formed because energy is what is keeping the bond together so when the the bond break the energy is no longer keeping them together which means it has been released
7. The radius of the Cesium ion in cesium chloride is smaller than the radius of a cesium atom when they are both in the ground State because the cesium ion in Cesium Chloride lost an electron causing its radius to decrease
15. A) Te because it lays along the the staircase on the periodic table which indicates it is a metalloid
1.  B) 5.0 mol because when you divide 220 by 44 your answer is 5

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Answer is A the elements are arranged in atomic number because as you go across the periodic table the atomic number increases

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Ryan question #25 packet a the answer is choice d because sodium and iodines malleability are different

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Ryan question #25 packet a the answer is choice d because sodium and iodines malleability are different

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The answer is C because when you subtract the number of protons by the atomic number then you get the total of neutrons which is 23
Packet 1A

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Breyana s. Question #21 answer: C and atom is mostly neutral when an atom has the same number of neutrons and electrons

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Chemistry Review MP5 1C
8. A molecule of carbon tetrachloride is nonpolar because its electron charge distribution is symmetrical.

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Answer is D because there is thermal energy being transferred when the ice cube is placed in something colder

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Chemistry Review MP5 1C
10.D) An electron -> Wave mechanical model describes the locations of electrons orbit around the nucleus of an atom.

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the answer choice is D because gas sample II and IV have the same temperature, pressure, and volume.

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Ryan question 5 packet a answer is c because flourine has the highest electronegativity and is in group 17

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Ryan question 5 packet a answer is c because flourine has the highest electronegativity and is in group 17

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Question #18 answer: increasing the surface area will result to more volume more space for molecules to move around. This will result in the forward reaction rate to increase

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Chemistry Review MP5 1C
20.D)NHv3 us asymmetrical/polar because the electrons aren't evenly distributed.

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Answer is A because the oxidation states are balanced

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Chemistry Review MP5 1C
7.The radius of a cesium ion in cesium chloride is smaller than the radius of a regular cesium atom because when the cesium atom bonds with chlorine it loses electrons, resulting in a smaller electron radius.

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Answer:B isotopes differ in neutrons but have the same amount of protons

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Answer is B because this is an endothermic reaction and the energy is being absorbed so the energy has to be on the reactant side

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answer choice is B because when two particles with the proper energy and orientation its collision theory.

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The answer to question #25 is choice D because element Si is located in the metalloid stair in the Periodic Table.

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Ryan question 12 answer is c because reactant particles must collide to create a chemical reaction

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Ryan question 12 answer is c because reactant particles must collide to create a chemical reaction

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answer choice is C because formula mass is the sum of the atomic masses of the atoms in a molecule

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Answer: A heat flows from hot to cold so since the copper is hotter, the heat from the copper is going to flow to the colder iron

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The answer to question #5 is choice C because LeChatelier's principle is mainly about stress in a system at equilibrium.

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answer choice is C because represents the formula for iron(2) oxide

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Answer is C because a single atom switched places with another atom in the molecules but the other ones didn’t move

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The answer to question #9 is choice A because ammonium and nitrate can be combined and can both be seen in Table E.

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Answer is B because there is more potential energy on the products side and going from solid to gas is a physical change

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answer choice is A because wave mechanical model of the atom electrons are located in the oribtals.

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Answer: when dynamic equilibrium occurs, in both a forward and reverse reaction, the rate of reaction will equal

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Ryan question 14 answer is c because the lines for element x and a both align with the lines for the mixture making those elements present in the mixture

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Ryan question 14 answer is c because the lines for element x and a both align with the lines for the mixture making those elements present in the mixture

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The answer to question #10 is choice D because both reactants are combining to form 1 product.

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Answer: D because Mg+2 is a cation which means it loses electrons which makes it a positively charged atom

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answer choice is D because kinetic energy and temperature are associated with each other.

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If you go on table H and look for propanone at 50 degrees C it will be at 83kPa (Answer choice D)
Packet 1A

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Packet 1a Question #8
The answer is D

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Answer is B because of Avogadro's law where equal volume equals same number of molecules

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Answer:B electrons in the outermost shell of an element has the greatest effect on the chemical properties

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Ryan question 10 gas always goes straight in a line and it doesnt have an attractive force to eachother

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Ryan question 10 gas always goes straight in a line and it doesnt have an attractive force to eachother

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Answer is A because that’s what the wave mechanical model says. It is located in the orbitals

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The answer choice is D because it’s found on the “steps” of the periodic table.

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The answer is A because it’s electronegativity is the lowest of the rest with a 0.5.

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The answer is choice D because the 2 atoms combine into a molecule.

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7) I already completed
4) the answer is C because entropy is in favor of high disorder and low energy.
18) according to the collision theory if you have a greater surface area the reaction rate increases.
17) the freezing point of a mixture 4 is 58 degrees Celsius greater than water which is 0 degrees Celsius.
13)the equation is specific change of heat. I got choice C by finding the difference of the temperatures and then I multiply the mass by waters specific heat capacity and then by the difference i got 9104.04 and moved  the decimal 3 place to the left to put in scientific notation and record the answer.

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Answer is B the valence electrons are always found in the last outermost shell.

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Answer is A because that’s the only answer that shows chemical formulas.

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Answer is A because that is the only element there all the other ones are compounds.

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Answer is A because as you increase the reaction rate you lower the activation energy.

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10) i completed
16) is choice D because Zn is above Ni on the table J activity series chart. Meaning that it’s more spontaneous than Ni.
21) is Choice D because I’m order for the atom to be stable is must have the same number of protons and electrons.
1) is choice A because heat got from hot to cold.
3) is choice B because H2O is a hydrogen bond which is the strongest intermolecular force.

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the answer choice is C because Xe is has the lowest density at those requirements.

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the answer choice is A because the electron configuration is 2-8-1

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the answer choice B because the definiton represents electronegativity

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the answer choice is B because the energy being absorbed represents a bond broken

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the answer choice is B because you need 2 moles so it can completely react

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17. A) Ammonia because it is a compound and compounds can be broken down by chemical means
25. D) 600. K and 50. kPa because this answer has the Highest temperature and lowest pressure
20. D) Because NH3 has a lone pair which makes it asymmetrical
2. C) 25g/225g X 100 because you have to divide mass of solute by the mass of solute + mass of solvent and multiply by 100

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The answer to question 14 is choice B because the new pressure is twice as much as the original one and the temperature increased

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The answer to question 17 is that they are the same because both KNO3 and H2O have the same mass.

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The answer to question 1 is choice A because heat flows from hotter objects to cooler ones to balance out.

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The answer to question 3 is choice A because water's larger molecular size.

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8: Carbon tetrachloride is a non polar because they share symmetrical charge
9:Ne-20 is 10
Ne-22 is 12
13:D
17:A
3
18:D
15:A
25:D- Ideal gas is low pressure, High temp.
22:B
2:
19:
1:
10:

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1. B) 5.0 mol because 220 divided by 44 gives you 5
3.
9. Ne-20 has 10 neutrons because 10 neutrons + 10 protons equals 20 and Ne-22 has 12 neutrons because 12 neutrons + 10 protons equals 22
18. They have different chemical properties and H2O2 breaks down to form water molecules as well as Oxygen molecules
19. B) Ionic and Molecular