June 2018 Chemistry Regents Questions 1-10 Question Preview (ID: 59750)


Use Your Knowledge Of Chemistry To Answer All Questions In The Data Set. You Will Need Your Chemistry Reference Tables And A Calculator To Answer Some Of The Questions. Good Luck. TEACHERS: click here for quick copy question ID numbers.

Which statement describes the charge and location of an electron in an atom?
a) An electron has a positive charge and is located outside the nucleus.
b) An electron has a positive charge and is located in the nucleus.
c) An electron has a negative charge and is located outside the nucleus.
d) An electron has a negative charge and is located in the nucleus.

Which statement explains why a xenon atom is electrically neutral?
a) The atom has fewer neutrons than electrons.
b) The atom has more protons than electrons.
c) The atom has the same number of neutrons and electrons.
d) The atom has the same number of protons and electrons.

If two atoms are isotopes of the same element, the atoms must have
a) the same number of protons and the same number of neutrons
b) the same number of protons and a different number of neutrons
c) a different number of protons and the same number of neutrons
d) a different number of protons and a different number of neutrons

Which electrons in a calcium atom in the ground state have the greatest effect on the chemical properties of calcium?
a) the two electrons in the first shell
b) the two electrons in the fourth shell
c) the eight electrons in the second shell
d) the eight electrons in the third shell

The weighted average of the atomic masses of the naturally occuring isotopes of an element is the
a) atomic mass of the element
b) atomic number of the element
c) mass number of each isotope
d) formula mass of each isotope

Which element is classified as a metalloid?
a) Cr
b) Cs
c) Sc
d) Si

Which statement describes a chemical property of iron?
a) Iron oxidizes.
b) Iron is a solid at STP.
c) Iron melts.
d) Iron is attracted to a magnet.

Graphite and diamond are two forms of the same element in the solid phase that differ in their
a) atomic numbers
b) crystal structures
c) electronegativities
d) empirical formulas

Which ion has the largest radius?
a) Br-
b) Cl-
c) F-
d) I-

Carbon monoxide and carbon dioxide have
a) the same chemical properties and the same physical properties
b) the same chemical properties and different physical properties
c) different chemical properties and the same physical properties
d) different chemical properties and different physical properties

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