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Home Q & A Board Biology-Related Homework Help Biochemistry
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Which of the following represents a physical change?
Which of the following represents a physical change?
Which of the following represents a physical change?
 a. boiling water c. both a and b
  b. decomposition of a dead organism d. neither a nor b
ahh_risa   40   1 Reply
6 years ago
Which of the following is not a chemical change?
Which of the following is not a chemical change?
Which of the following is not a chemical change?
 a. rusting of a car body
  b. ripening of fruit
  c. souring of milk
  d. None, all of these are chemical changes.
crownlessking   44   1 Reply
6 years ago
Which of the following is not a physical property of gold?
Which of the following is not a physical property of gold?
Which of the following is not a physical property of gold?
 a. characteristic color
  b. density
  c. electrical conductivity
  d. None, they are all physical properties.
Greenspotsock   27   1 Reply
6 years ago
Which of the following is a chemical property of gold?
Which of the following is a chemical property of gold?
Which of the following is a chemical property of gold?
 a. characteristic color
  b. electrical conductivity
  c. lack of reactivity
  d. None, they are all physical properties.
sophie0209   26   1 Reply
6 years ago
Which of the following is a chemical property of water?
Which of the following is a chemical property of water?
Which of the following is a chemical property of water?
 a. Ice floats. c. Water reacts violently with sodium.
  b. Water boils at 100C. d. All of these are chemical properties.
shoppa   46   1 Reply
6 years ago
Which of the following is not an example of matter?
Which of the following is not an example of matter?
Which of the following is not an example of matter?
 a. the air in your lungs
  b. the blood in your arteries
  c. the sunlight coming through the window
  d. None, all of these are matter.
Miller123   22   1 Reply
6 years ago
Which of the following correctly describe ionization energies?
Which of the following correctly describe ionization energies?
Which of the following correctly describe ionization energies?
 a. Ionization energies are always positive, the process is always endothermic.
  b. Ionization energies generally increases as we go from top to bottom within a column of the
kescobar5   73   1 Reply
6 years ago
Which of the following is true of ionization energies as one moves left to right across a period of ...
Which of the following is true of ionization energies as one moves left to right across a period of ...
Which of the following is true of ionization energies as one moves left to right across a period of the periodic table?
 a. They consistently decrease.
  b. They consistently increase.
  c. They generally decrease, but there are some
alshernandez   58   1 Reply
6 years ago
Which of the chemical elements has the highest ionization energy?
Which of the chemical elements has the highest ionization energy?
Which of the chemical elements has the highest ionization energy?
 a. F c. He
  b. H d. U
linasottile   43   1 Reply
6 years ago
Which of the following has the highest ionization energy?
Which of the following has the highest ionization energy?
Which of the following has the highest ionization energy?
 a. Cl c. N
  b. F d. O
tarapratt95   37   1 Reply
6 years ago
Which of the following has the lowest ionization energy?
Which of the following has the lowest ionization energy?
Which of the following has the lowest ionization energy?
 a. Ba c. Mg
  b. Ca d. Sr
jayfro   64   1 Reply
6 years ago
Which of the following has the lowest ionization energy?
Which of the following has the lowest ionization energy?
Which of the following has the lowest ionization energy?
 a. Br c. F
  b. Cl d. I
stalmoney   57   1 Reply
6 years ago
Which of the following has the highest ionization energy?
Which of the following has the highest ionization energy?
Which of the following has the highest ionization energy?
 a. Br c. F
  b. Cl d. I
bronzeclock   39   1 Reply
6 years ago
Which of the following give(s) the correct order of ionization energies?
Which of the following give(s) the correct order of ionization energies?
Which of the following give(s) the correct order of ionization energies?
 a. Li > Na > K > Rb c. both a and b
  b. Na > Mg > P > Cl d. neither a nor b
Random   44   1 Reply
6 years ago
Which of the following give(s) the correct order of ionization energies?
Which of the following give(s) the correct order of ionization energies?
Which of the following give(s) the correct order of ionization energies?
 a. Li < Na < K < Rb c. both a and b
  b. Na > Mg > P > Cl d. neither a nor b
Linalovespickle   33   1 Reply
6 years ago
Which of the following give(s) the correct order of ionization energies?
Which of the following give(s) the correct order of ionization energies?
Which of the following give(s) the correct order of ionization energies?
 a. Li < Na < K < Rb c. both a and b
  b. Na < Mg < P < Cl d. neither a nor b
Linalovespickle   39   1 Reply
6 years ago
In comparing sodium and potassium which of the following statements is true?
In comparing sodium and potassium which of the following statements is true?
In comparing sodium and potassium which of the following statements is true?
 a. Sodium is more likely to lose an electron than potassium because sodium has a higher ionization energy than potassium.
  b. Sodium is more likely to lose an e
starrlite81   24   1 Reply
6 years ago
Which of the following is true of the ionization energy of the elements?
Which of the following is true of the ionization energy of the elements?
Which of the following is true of the ionization energy of the elements?
 a. Ionization energy generally decreases as we move left to right and decreases as we move top to bottom in the periodic table.
  b. Ionization energy generally decr
mdlc0516   57   1 Reply
6 years ago
When potassium loses an electron to form K+, which electron is lost?
When potassium loses an electron to form K+, which electron is lost?
When potassium loses an electron to form K+, which electron is lost?
 a. 1s c. 3s
  b. 2s d. 4s
Jnortontruvisio   47   1 Reply
6 years ago
The ionization energy of an atom is which of the following?
The ionization energy of an atom is which of the following?
The ionization energy of an atom is which of the following?
 a. the energy released when an atom gains an electron
  b. the energy released when an atom loses an electron
  c. the energy required to add an electron to an atom
  d
ksultz   46   1 Reply
6 years ago
Atoms of which of the following elements are smallest?
Atoms of which of the following elements are smallest?
Atoms of which of the following elements are smallest?
 a. Cl c. S
  b. P d. None, they are all the same size.
lacoya15   38   1 Reply
6 years ago
Atoms of which of the following elements are largest?
Atoms of which of the following elements are largest?
Atoms of which of the following elements are largest?
 a. Cl c. S
  b. P d. None, they are all the same size.
Brooke.catlin   28   1 Reply
6 years ago
Atoms of which of the following elements are smallest?
Atoms of which of the following elements are smallest?
Atoms of which of the following elements are smallest?
 a. Ca c. Mg
  b. K d. Na
shoppa   25   1 Reply
6 years ago
Atoms of which of the following elements are largest?
Atoms of which of the following elements are largest?
Atoms of which of the following elements are largest?
 a. Ca c. Mg
  b. K d. Na
ahh_risa   33   1 Reply
6 years ago
Atoms of which of the following elements are smallest?
Atoms of which of the following elements are smallest?
Atoms of which of the following elements are smallest?
 a. Rb c. Na
  b. K d. None, they are all the same size.
Miller123   29   1 Reply
6 years ago
Atoms of which of the following elements are largest?
Atoms of which of the following elements are largest?
Atoms of which of the following elements are largest?
 a. Rb c. Na
  b. K d. None, they are all the same size.
kristina92293   29   1 Reply
6 years ago
Atoms of which of the following elements are smallest?
Atoms of which of the following elements are smallest?
Atoms of which of the following elements are smallest?
 a. Al c. Na
  b. Mg d. None, they are all the same size.
lacinb30   32   1 Reply
6 years ago
Atoms of which of the following elements are largest?
Atoms of which of the following elements are largest?
Atoms of which of the following elements are largest?
 a. Al c. Na
  b. Mg d. None, they are all the same size.
linasottile   22   1 Reply
6 years ago
What type of particles can atoms gain or lose when they become ions?
What type of particles can atoms gain or lose when they become ions?
What type of particles can atoms gain or lose when they become ions?
 a. protons c. electrons
  b. neutrons d. It depends on the atom involved.
lacinb30   57   1 Reply
6 years ago
How many elements are there in period 4?
How many elements are there in period 4?
How many elements are there in period 4?
 a. 2 c. 8
  b. 6 d. 18
Jovaini   18   1 Reply
6 years ago
How many elements are there in period 3?
How many elements are there in period 3?
How many elements are there in period 3?
 a. 2 c. 8
  b. 6 d. 18
alexiswells   20   1 Reply
6 years ago
How many elements are there in period 2?
How many elements are there in period 2?
How many elements are there in period 2?
 a. 2 c. 8
  b. 6 d. 18
crownlessking   23   1 Reply
6 years ago
In the region of the periodic table associated with the inner transition elements which type of ...
In the region of the periodic table associated with the inner transition elements which type of ...
In the region of the periodic table associated with the inner transition elements which type of orbitals are being filled?
 a. s c. d
  b. p d. f
hawkins1346   45   1 Reply
6 years ago
In the regions of the periodic table associated with the main group elements which type of orbitals ...
In the regions of the periodic table associated with the main group elements which type of orbitals ...
In the regions of the periodic table associated with the main group elements which type of orbitals are being filled?
 a. s only c. s or p
  b. p only d. d only
kescobar5   37   1 Reply
6 years ago
Which of the following is true about elements in the same horizontal row of the periodic table?
Which of the following is true about elements in the same horizontal row of the periodic table?
Which of the following is true about elements in the same horizontal row of the periodic table?
 a. The number of valence electrons remains the same throughout the row.
  b. The number of valence electrons decreases as we move left to righ
bubblegum123   56   1 Reply
6 years ago
Which of the following is the most characteristic feature of the electronic configurations of the ...
Which of the following is the most characteristic feature of the electronic configurations of the ...
Which of the following is the most characteristic feature of the electronic configurations of the elements in a vertical column?
 a. The electron configurations are identical.
  b. The valence electrons are of the same type and number.
Larrhea   31   1 Reply
6 years ago
How many unpaired electrons are there in a fluorine atom in its ground state?
How many unpaired electrons are there in a fluorine atom in its ground state?
How many unpaired electrons are there in a fluorine atom in its ground state?
 a. 1 c. 5
  b. 3 d. 7
jennjenn563   71   1 Reply
6 years ago
How many unpaired electrons are there in an oxygen atom in its ground state?
How many unpaired electrons are there in an oxygen atom in its ground state?
How many unpaired electrons are there in an oxygen atom in its ground state?
 a. 1 c. 4
  b. 2 d. 8
mdlc0516   73   1 Reply
6 years ago
How many unpaired electrons are there in a carbon atom in its ground state?
How many unpaired electrons are there in a carbon atom in its ground state?
How many unpaired electrons are there in a carbon atom in its ground state?
 a. 1 c. 3
  b. 2 d. 4
MB0727   70   1 Reply
6 years ago
The number of valence electrons of a main group element is related to which of the following?
The number of valence electrons of a main group element is related to which of the following?
The number of valence electrons of a main group element is related to which of the following?
 a. the element's atomic number c. the element's column number
  b. the element's atomic weight d. none of the above
alexiswells   55   1 Reply
6 years ago
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