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ACS Exam in General Chemistry Questions With Completed & Verified Solutions 2024.
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ACS Exam in General Chemistry Questions With Completed & Verified Solutions 2024.
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ACS Exam in General ChemistryWhich is the mass number? 23/11 Na - ANS 23
Which is the atomic number? 23/11 Na - ANS 11
The total number of protons and neutrons in the nucleus. - ANS mass number
The number of protons in the nucleus - ANS atomic number
Which is the atomic number? 22/11 Na - ANS 11
Is this an isotope? 83/41 Pb - ANS yes
Atoms whose nuclei have the same atomic number but different mass numbers - ANS isotope
Atomic radius trend? - ANS Atomic radius increases going down and to the left
Electron affinity trend? - ANS Electron affinity increases going up and to the right
Ionization energy trend? - ANS Ionization energy increases going up and to the right
Electronegativity trend? - ANS Electronegativity increases going up and to the right
Metallic character trend? - ANS Down and to the left
Nonmetal character trend? - ANS Up and to the right
Composed of only two elements - ANS binary compound
mass of A/total mass *100% - ANS mass percent
The formula of a substance written with the smallest whole number subscripts - ANS empirical
formula
A substance that exists in solution almost entirely as ions - ANS strong electrolyte
A substance that dissolves in water to give a small percentage of ions - ANS weak electrolyte
A substance that dissolves in water to give an electrically conductive solution. - ANS electrolyte
Which is soluble, HNO3 or Pb(OH)2? - ANS HNO3
, Which is soluble, AgOH or Ca(OH)2? - ANS Ca(OH)2
Which is soluble, NaAc or Ca3(PO4)2? - ANS NaAc
Exceptions to OH solubility - ANS alkali metals, Ca, Sr, Ba
Exceptions to phosphate solubility - ANS alkali metals, ammonium
Exceptions to carbonate solubility - ANS alkali metals, ammonium
The oxidation number of an atom in an element is __. - ANS 0
The oxidation number of an atom in a monoatomic ion equals the ____ __ __ __. - ANS charge
of the ion
The oxidation number of oxygen is __ in most of its compounds. Except in H2O2 it is __. - ANS
-2,-1
The oxidation number of hydrogen is __ in most of its compounds. In binary compounds with a
metal it is __. - ANS +1, -1
Halogens generally have an oxidation number of __. - ANS -1
The sum of the oxidation numbers of a compound is __. The sum of the oxidation numbers in a
polyatomic ion is __ ____ __ __ __. - ANS 0, the charge of the ion
The half reaction where a species gains electrons or reduces its oxidation number - ANS
reduction reaction
The half reaction where a species looses electrons or increases its oxidation number - ANS
oxidation reaction
A species that oxidizes another species, is reduced - ANS oxidizing agent
A species that reduces another species, is oxidized - ANS reducing agent
The force exerted per unit area of surface - ANS pressure
Ideal Gas Law - ANS PV=nRT
What is the most energetic photon? - ANS gamma ray
What is the least energetic photon? - ANS radio
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