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WorksheetsRegents Chemistry Review Matter to Naming Formulas
Total questions: 25
Worksheet time: 1hrs 5mins
In an atom, an orbital represents
the most probably location of a proton
the most probable location of an electron
the least probably location of a neutron
photons emitted as electrons move to lower energy levels
During a flame test, sodium chloride produces an intense yellow flame. This yellow color is produced when electrons in excited atoms
are gained by the atoms
are lost by the atoms
move to higher energy states within the atoms
move to lower energy states within the atoms
Which elements have the most similar chemical properties?
Ge, As, and Sb
Mn, Fe, and Co
S, Se, and Te
P, S, and Cl
What is the overall charge of an ion that has 9 protons, 11 neutrons, and 10 electrons?
+1
-1
+2
-2
Which electron configuration represents the atoms of a bromine atom in the excited state?
2-8-18-7
2-8-18-8
2-8-17-8
2-8-18-7-1
Based on Table S, an atom of which element has the strongest attraction for electrons in a chemical bond?
Aluminum
Chlorine
Magnesium
Sulfur
What is the chemical formula for ammonium sulfide?
(NH4)2S
(NH4)2SO3
(NH4)2SO4
(NH4)2S2O3
What is the name of PbO2
Lead Oxide
Lead (II) Oxide
Lead (IV) Oxide
Lead Hydroxide
During a flame test, sodium chloride produces an intense yellow flame. This yellow color is produced when electrons in excited atoms
are gained by the atoms
are lost by the atoms
move to higher energy states within the atoms
move to lower energy states within the atoms
What is the overall charge of an ion that has 9 protons, 11 neutrons, and 10 electrons?
+1
-1
+2
-2
Which electron configuration represents the atoms of a bromine atom in the excited state?
2-8-18-7
2-8-18-8
2-8-17-8
2-8-18-7-1
What part of the atom determines the identity of an atom?
Electrons
Neutrons
Protons
Nucleus
Which statement describes the charge of an electron and the charge of a proton?
An electron and a proton both have a charge of +1.
An electron and a proton both have a charge of -1.
An electron has a charge of +1, and a proton has a charge of -1.
An electron has a charge of -1, and a proton has a charge of +1.
Compared to the charge of a proton, the charge of an electron has
the same magnitude and the same sign
the same magnitude and the opposite sign
a greater magnitude and the opposite sign
a greater magnitude and the same sign
What is the overall net charge of an ion that has 12 protons, 10 electrons and 14 neutrons?
2+
2-
4-
4+
An ion that consists of 7 protons, 6 neutrons and 10 electrons has a net charge of
4+
3+
3-
4-
What is the number of electrons in an Al3+ ion?
3
10
13
16
Based on the information in the table, which two atoms are isotopes of the same element?
A and D
A and Z
X and D
X and Z
Which two notations represent different isotopes of the same element?
Which statement best explains why most atomic masses on the Periodic Table are decimal numbers?
Atomic masses are determined relative to an H–1 standard.
Atomic masses are determined relative to an O–16 standard.
Atomic masses are a weighted average of the naturally occurring isotopes.
Atomic masses are an estimated average of the artificially produced isotopes.
Based on the information in the table, which numerical setup can be used to calculate the atomic mass of the element bromine?
(78.92 u)(50.69) + (80.92 u)(49.31)
(78.92 u)(49.31) + (80.92 u)(50.69)
(78.92 u)(0.5069) + (80.92 u)(0.4931)
(78.92 u)(0.4931) + (80.92 u)(0.5069)
Separating a mixture based on differences in boiling point is called _____________.
distillation
filtration
chromatography
precipitation
