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Answer is A
Reason is because an ideal gas requires lower pressure

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3. is D because in table S,  ion I has largest radius of 136 pm
9. B because malleablity means physical property of an object
16. J because in -2 charge, you gain protons and neutrons
4. B because both are made from carbon but reacts differently.
6. A because the chemical equation is a solid
14. B because the both wave lenghs  are equivalent to  585 nm
18.  D because both gas have same pressure and volume
10.  A because that shows what ideal gas means.
8.

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#17 is A
Because ammonia is a compound not an element
#14 is C
Because it is shown on the reference table
#2 is B
Because it displays the given numbers
#9 is 10 and 12 neutrons because neon normally has 10 protons
#5 is C
Because all other choices decreases entropy
#7: the radius of the cesium ion is smaller than the radius of the cesium atom because the ion gains an electron
#22 is B
Because copper is metal
#23 is B
Because electronegativity isn’t a energy
#1 is B
Because 44 x 5 is 220
#15 is A
Because Te is metaloid
#11 is B
Because the nucleus has positive protons
#19 is D
Because ionic is not compound and nuclear is not compound either
#16 is C because since they are the same element but different amounts it has different structure and same properties

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#23. Answer is D.
a and b have only 3 number but potassium has 4 numbers and c is ground state which makes D the answer.
#22. Answer is C
42- 19(atomic number)= 23(Neutrons)

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2.Answer is B because logically,18 liters is equal to 18 liters,so B is the answer. Similarly, 1000 tons of feather is equal to 1000 tons of brick.
4.Answer is C because the rule for nature's entropy is high entropy with low energy,NATURE IS LAZY
8.Answer is B because only B has lower melting point than 1000 K (given). Which means it'll definitely melt.
10.Answer is B because it shows combination of 2H2 and 02 so it have to be synthesis.
11.Answer is B because when an anion become a atom,it have gain electrons,gaining electron will increase the radius.
14.Answer is A because the pressure increased which means more compress,if pressure double, the volume is inverse so cut in half.Half of 11.2 is 5.1 so A is the answer.
15.Answer is B because only B matches the diagram given in the problem.
19.At dynamic equilibrium, forward and reverse reaction are at equal and constant rate.
20.Answer is C because electron always have negative charge and it is located outside the nucleus.
22.Answer is B because different isotopes of same element have same number of protons and different number of neutrons.
23.Answer is B because valence electron does the reaction job.
24.Answer is C because mass number is the only choice that makes sense.
25.Answer is D because only Si is a metalloid.

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4.B
Its B

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20. The answer is C because the electron has a negative charge and it is located outside the nucleus
7. The answer is C this is because it is 2-5-1 the 1 moved to the 3rd shell so it is excited
9. The answer is A because Ammonium nitrate is NH4NO3
1. The answer is A because heat is released from the one with the most temperature to the one with the least amount of temperature
25. The answer is D because Si is a metalloid found on periodic table
4. The answer is C because systems in nature tend to undergo changes toward higher entropy and lower energy
21. The answer is D because if the atom has the same number of protons and electrons then they cancel out and it is neutral
3. The answer is B because when it has a stronger bonding then it has a higher boiling point
16. The answer is D because Zn has a spontaneous reaction with NiCL2(aq)
24. The answer is A because the atomic mass of an element is the weighted average mass of the occurring isotopes
10.  The answer is D because the 2H2+ O2 becomes 2H20
2. The answer is B because it would have the same amount of number of atoms if the volume is the same
12. The answer is B because HF is the least polar

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1. A because iron can only rust which is the same as oxidizing.
8. C because  electronegativity is 11.4 , is polar, is asymmetrical
24. C because diagram has one compound and 2 different elements
25. D because sodium has good malleability . Iodine has none.
12. C because you need energy to chemically combine particles

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14) The answer is C
16) The answer is D
11) The answer is B because the nucleus includes protons and neutrons
24) The answer is B because nitrogen has the higher electronegativity
19)The answer is B
2) The answer is C because you divide the mass, which is 25 g, by the mass of the entire solution, which is 225 g, and then multiply by 100
4) The answer is C
13) The answer is D
1) The answer is B because you divide 220 g divide it by 44 g/mol and get 5.0 mol
25) The answer is D because ideal gas must be at a high temperature, but low pressure
22) The answer is B because copper is a metal
12) The answer is B
9) The number of neutrons in Ne-20 are 10, and the number of neutrons in Ne-22 are 12

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Daniel Rojas.  1c

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Daniel Rojas 1c

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10) a) emprical and molecular bc it contains moles ratio
3) b) atom are neutral because protons and eletron makes an element neutral
6) a) is the answer since 2-8-1 is in ground state.
14)  a is the answer since its one element which can't be decomposed.
11) b since the masses adds to the molecule
1) it won't be equal
since the temperature of one side is higher than the other meaning one side will have to decrease.
2) b) since the gold foil experiment was to prove theres an empty space with a positive nucleus
7) the periodic table is arranged by the increasing number of atomic numbers.

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1.(A)
3.(C)
5.(A)
7.
8.(A)
9.(A)
11.(A)
13.(B)
14.(C)
16.(A)
18.(D)
22.
24.(C)