ACS Chemistry General Exam Questions And Correct Verified
Answers/ Already Graded A+
1. Layout of an element (mass # & atomic
#)
2. atomic number = # of protons
3. mass number = # of protons + neutrons
4. the number of protons in a neutral # of electrons
atom will equal the
5. how to find the correct number of neu- mass number - atomic number
trons
6. Forms of the same elements that differ isotopes
in amount of neutrons
7. What particle, if lost from the nucleus, a neutron because it has no charge
would NOT cause a change in the atom-
ic number?
8. When alpha particles were shot at a that the atoms of the metal were mostly empty
metal foil target, most passed through space, while the nucleus consisted of most of the
without deflections, while others de- mass which included highly condensed positive
flected at large angles. What did this particles (which caused the deflection).
suggest to Rutherford?
9. An atom has a valence shell configura- IA
tion of 1s1. To which group of elements alkali metals
on the periodic table does it belong?
10. electromagnetic spectrum
, ACS Chemistry General Exam Questions And Correct Verified
Answers/ Already Graded A+
11. The greater the wavelength of a pho- the lower its frequency
ton..?
12. The greater the frequency of a pho- the shorter its wavelength
ton...?
13. Light energy formula
14. What does C in the light energy formula
represent?
15. Give the ground-state electron configu- 1s2 2s1
ration of an atom in the second period
16. Electrons configuration rule that states Hund's rule
electrons do not pair until they have
to. (put one electrons in each electron
domain then pair up)
17. An experimental phenomena associat- Paramagnetism
ed with atoms having unpaired elec-
trons - which states such substances
are attracted to magnetic fields
18. Which drop in energy level results in the n=2 to n=1
, ACS Chemistry General Exam Questions And Correct Verified
Answers/ Already Graded A+
greatest emission of energy?
19. quantum numbers
, ACS Chemistry General Exam Questions And Correct Verified
Answers/ Already Graded A+
20. What do the 4 quantum numbers stand n = energy level
for? l = (n-1)
ml -l to l
mn 1/2 or -1/2 (spin)
21. List the quantum numbers for the s, p, s 1,0,0
d, and f orbitals p 2, 1, -1-0-1
d 3, 2, -2--1-0-1-2
f 4, 3 -3--2--1-0-1-2-3
22. Py orbital
23. Which element is represented by X Chromium
24. What two subatomic particles have the protons and neutrons
most mass, but occupy very little of the
volume of an atom
25. Define Isoelectronic Having the same amount of electrons
26. How does a sodium ion differ from a the sodium ion has fewer electrons
sodium atom?
27. two or more compounds with the same isomer
Answers/ Already Graded A+
1. Layout of an element (mass # & atomic
#)
2. atomic number = # of protons
3. mass number = # of protons + neutrons
4. the number of protons in a neutral # of electrons
atom will equal the
5. how to find the correct number of neu- mass number - atomic number
trons
6. Forms of the same elements that differ isotopes
in amount of neutrons
7. What particle, if lost from the nucleus, a neutron because it has no charge
would NOT cause a change in the atom-
ic number?
8. When alpha particles were shot at a that the atoms of the metal were mostly empty
metal foil target, most passed through space, while the nucleus consisted of most of the
without deflections, while others de- mass which included highly condensed positive
flected at large angles. What did this particles (which caused the deflection).
suggest to Rutherford?
9. An atom has a valence shell configura- IA
tion of 1s1. To which group of elements alkali metals
on the periodic table does it belong?
10. electromagnetic spectrum
, ACS Chemistry General Exam Questions And Correct Verified
Answers/ Already Graded A+
11. The greater the wavelength of a pho- the lower its frequency
ton..?
12. The greater the frequency of a pho- the shorter its wavelength
ton...?
13. Light energy formula
14. What does C in the light energy formula
represent?
15. Give the ground-state electron configu- 1s2 2s1
ration of an atom in the second period
16. Electrons configuration rule that states Hund's rule
electrons do not pair until they have
to. (put one electrons in each electron
domain then pair up)
17. An experimental phenomena associat- Paramagnetism
ed with atoms having unpaired elec-
trons - which states such substances
are attracted to magnetic fields
18. Which drop in energy level results in the n=2 to n=1
, ACS Chemistry General Exam Questions And Correct Verified
Answers/ Already Graded A+
greatest emission of energy?
19. quantum numbers
, ACS Chemistry General Exam Questions And Correct Verified
Answers/ Already Graded A+
20. What do the 4 quantum numbers stand n = energy level
for? l = (n-1)
ml -l to l
mn 1/2 or -1/2 (spin)
21. List the quantum numbers for the s, p, s 1,0,0
d, and f orbitals p 2, 1, -1-0-1
d 3, 2, -2--1-0-1-2
f 4, 3 -3--2--1-0-1-2-3
22. Py orbital
23. Which element is represented by X Chromium
24. What two subatomic particles have the protons and neutrons
most mass, but occupy very little of the
volume of an atom
25. Define Isoelectronic Having the same amount of electrons
26. How does a sodium ion differ from a the sodium ion has fewer electrons
sodium atom?
27. two or more compounds with the same isomer
